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<rss version="2.0"><channel><title>[HEAD-PHONES] e afins Latest Topics</title><link>https://autoforum.com.br/forum/74-head-phones-e-afins/</link><description>[HEAD-PHONES] e afins Latest Topics</description><language>en</language><item><title>Fones KZ Hi-Fi</title><link>https://autoforum.com.br/topic/218699-fones-kz-hi-fi/</link><description><![CDATA[
<p>Amigos, minha experiência com fones é pouca.</p>
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<p>Utilizava o fone do iPhone e achava bonzinho até...</p>
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<p>Adquirir um AKG k404 e percebi outro mundo!</p>
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<p>Porém não me sinto à vontade utilizando um fone grande nas ruas.</p>
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<p>Por isso comecei a pesquisar por modelos in-ear e no grupo do facebook estavam falando bastante dos modelos do fabricante chinês "KZ"</p>
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<p>Alguém aqui possui ou já pode escutar algum modelo?</p>
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<p>Este é o KZ ATE, muito recomendado</p>
<p><a class="ipsAttachLink ipsAttachLink_image" href="https://autoforum.com.br/uploads/monthly_06_2016/post-13871-1466777967,5849.jpg" data-fileid="4420" data-fileext="jpg" rel=""><img data-fileid="4420" class="ipsImage ipsImage_thumbnailed" alt="post-13871-1466777967,5849_thumb.jpg" src="https://autoforum.com.br/uploads/monthly_06_2016/post-13871-1466777967,5849_thumb.jpg"></a></p>
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<p>Modelo ZS1 com 2 drivers dinâmicos</p>
<p><a class="ipsAttachLink ipsAttachLink_image" href="https://autoforum.com.br/uploads/monthly_06_2016/post-13871-1466778010,6684.jpg" data-fileid="4421" data-fileext="jpg" rel=""><img data-fileid="4421" class="ipsImage ipsImage_thumbnailed" alt="post-13871-1466778010,6684_thumb.jpg" src="https://autoforum.com.br/uploads/monthly_06_2016/post-13871-1466778010,6684_thumb.jpg"></a></p>
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<p><a class="ipsAttachLink ipsAttachLink_image" href="https://autoforum.com.br/uploads/monthly_06_2016/post-13871-1466778049,8447.jpeg" data-fileid="4422" data-fileext="jpeg" rel=""><img data-fileid="4422" class="ipsImage ipsImage_thumbnailed" alt="post-13871-1466778049,8447_thumb.jpeg" src="https://autoforum.com.br/uploads/monthly_06_2016/post-13871-1466778049,8447_thumb.jpeg"></a></p>
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<p>Todos vendidos no Aliexpress e com preço muito bom!</p>
]]></description><guid isPermaLink="false">218699</guid><pubDate>Fri, 24 Jun 2016 14:21:24 +0000</pubDate></item><item><title>Ajuda para escolher fone de ouvido ate 1000,00R$</title><link>https://autoforum.com.br/topic/219127-ajuda-para-escolher-fone-de-ouvido-ate-100000r/</link><description><![CDATA[
<p>Boa tarde pessoal,poderia me dar alguma dica em qual fone de ouvido pra compra com o valor ate 1000,00r$  no Brasil mesmo .,já possuo o akg k414 p e o <span><em>Koss Porta</em> Pro </span></p>
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]]></description><guid isPermaLink="false">219127</guid><pubDate>Tue, 12 Jul 2016 16:41:31 +0000</pubDate></item><item><title>Dica: Fones de Ouvido BBB</title><link>https://autoforum.com.br/topic/152500-dica-fones-de-ouvido-bbb/</link><description><![CDATA[
<p>Ae galera...</p>
<p> </p>
<p>Mês passado eu tava procurando um fone de ouvido legalzinho para botar no celular... Navegando nos sites chineses, vendo fones de 6 a 7 dolares achei um Sennheiser falso vendendo, que diziam que era bom. Ae lendo os comentários achei o original</p>
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<p><a href="http://www.dealextreme.com/details.dx/sku.34760" rel="external nofollow">http://www.dealextreme.com/details.dx/sku.34760</a></p>
<p> </p>
<p>Tá mó discussão se é original ou não, mas resolvi arriscar. Comprei e recebi essa semana, comecei a procurar na internet fotos em alta resolução do original... O meu é EXATAMENTE igual estéticamente. Fiquei mais feliz...</p>
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<p>Resolvo ouvir.</p>
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<p>PQP!!! Umas 10 vezes melhor que o fone original do Ipod!! E pelo preço que paguei, não compra nem um mais ou menos aqui no BR.</p>
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<p>Ainda preciso achar uma boa placa de som para tirar conclusões perfeitas, mas o que posso adiantar: Grave MUITO gostoso, desce bem pra caramba, extremamente sensível e sobe bem. Achei que ele tem um pico ali perto dos 10k, mas só em algumas músicas. Não sei se é impressão minha, ou se são as músicas que tenho no Ipod. Mas recomendo!!!</p>
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<p>Ele fica confortável na orelha (depois de uns 10 segundos, que você acostuma), vem 3 borrachas para tamnhos diferentes de orelha, vem bolsinha pra guardar (achei mó viadagem, mas to usando) e isola MUITO BEM o barulho externo. Não caiu da orelha de jeito nenhum, nem correndo, nem pedalando. É botar ele e se isolar do mundo.</p>
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<p>É isso ae, uma das melhores compras que fiz nos últimos tempos!</p>
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<p>Abraços!</p>
]]></description><guid isPermaLink="false">152500</guid><pubDate>Thu, 30 Sep 2010 22:46:12 +0000</pubDate></item><item><title>Questyle Audio QP1R hi-rez portable player</title><link>https://autoforum.com.br/topic/213118-questyle-audio-qp1r-hi-rez-portable-player/</link><description><![CDATA[
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> </span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><strong>	Questyle Audio QP1R hi-rez portable player</strong></span></span></p>
<p><span style="color:#333333;"><span style="color:#888888;"><span style="font-family:arial, helvetica, sans-serif;"><span style="font-size:12px;">By </span></span></span></span><a href="http://www.stereophile.com/writer/83" rel="external nofollow"><span style="color:#333333;"><span style="color:#888888;"><span style="font-family:arial, helvetica, sans-serif;"><span style="font-size:12px;">John Atkinson </span></span></span></span></a><span style="color:#333333;"><span style="color:#888888;"><span style="font-family:arial, helvetica, sans-serif;"><span style="font-size:12px;">• Posted: Dec 1, 2015</span></span></span></span></p>
<p><a href="" rel=""><span style="color:#333333;"><span style="color:#FFFFFF;"><span style="font-family:arial, helvetica, sans-serif;"><span style="font-family:Verdana, Tahoma;"><span style="font-family:Arial, Helvetica, sans-serif;"><span style="font-size:8px;"><span style="font-size:10px;"><span style="background-color:rgb(67,95,172);">Share</span></span></span></span></span></span></span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><span style="font-family:Verdana, Tahoma;"><span style="font-size:8px;"> </span></span></span></span><a href="" rel=""><span style="color:#333333;"><span style="color:#106489;"><span style="font-family:arial, helvetica, sans-serif;"><span style="font-family:Verdana, Tahoma;"><span style="font-family:Arial, sans-serif;"><span style="font-size:8px;"><span style="font-size:10px;"><span style="background-color:rgb(239,245,249);">Tweet</span></span></span></span></span></span></span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><span style="font-family:Verdana, Tahoma;"><span style="font-size:8px;"> </span></span></span></span><a href="" rel=""><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><span style="font-family:Verdana, Tahoma;"><span style="font-family:Verdana, Tahoma, Geneva, sans-serif;"><span style="font-size:8px;"><span style="font-size:10px;"><span style="background-color:rgb(238,238,238);">Email</span></span></span></span></span></span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><span style="font-family:Verdana, Tahoma;"><span style="font-size:8px;">  </span></span></span></span><a href="" rel=""><span style="color:#333333;"><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;"><span style="font-family:Verdana, Tahoma;"><span style="font-family:Tahoma, Verdana, Geneva;"><span style="font-size:8px;"><span style="font-size:10px;"><span style="background-color:rgb(254,254,254);">Share</span></span></span></span></span></span></span></span></a></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> </span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> </span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">image: </span></span><a href="http://cdn.stereophile.com/images/styles/600_wide/public/1215quest.promo_.jpg?itok=1V9rtl4c" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">http://cdn.stereophile.com/images/styles/600_wide/public/1215quest.promo_.jpg?itok=1V9rtl4c</span></span></a><img alt="1215quest.promo_.jpg?itok=1V9rtl4c" src="http://cdn.stereophile.com/images/styles/600_wide/public/1215quest.promo_.jpg?itok=1V9rtl4c" /></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> </span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> </span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> </span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">The 2015 T.H.E. Show in Southern California clashed with my having to be in the office to ship our August issue to the printer, so I wasn't able to attend. But in devouring the online coverage on www.stereophile.com and its sister sites, on InnerFidelity.com I found a </span></span><a href="http://www.innerfidelity.com/content/show-newport-2015-questyle-qp1-and-qp1r-digital-audio-players" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">report by Tyll Hertsens</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> about two new hi-rez portable players that made their debuts at T.H.E. Show: Questyle Audio Technology's QP1 ($599) and QP1R ($899).</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Questyle was a name new to me. The company, based in China, has its products manufactured by Foxconn, of iPhone fame, but its North American operation is headed up by Bruce Ball, a veteran of the high-end audio industry. The two new players are very similar, differing in internal storage capacity—the QP1 has 16GB, the QP1R 32GB—and, according to Questyle, the QP1R uses higher-quality components and different firmware, and offers lower distortion and superior sound quality.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">As much as I love the sound of the </span></span><a href="http://www.stereophile.com/content/pono-ponoplayer-portable-music-player" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Pono Music PonoPlayer</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> that I bought to replace the </span></span><a href="http://www.stereophile.com/content/astellampkern-ak100-portable-media-player" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Astell&amp;Kern AK100</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> on my daily commute, its Toblerone size and shape mean that it won't fit in my shirt pocket—and in New York City's summer swelter, I don't wear a jacket with a pocket into which I can slip it. The slim Questyle players looked tempting. I felt I should review the affordable QP1, but my baser instincts got the better of me—I asked for a sample of . . .</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><strong>The QP1R</strong></span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">The size of a pack of cigarettes, the QP1R is housed in a CNC-machined aluminum chassis with a gray or a gold anodized finish. The front and rear panels are made from iPhone-esque Gorilla Glass, the front dominated by a square, color LCD screen and metal scroll wheel. This wheel has a central pushbutton and, around its circumference, four touchbuttons; a button on the QP1R's right edge acts as both the On/Off switch (long push) and disables/enables the control wheel, buttons, and the displays (short push).</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">The wheel's central button acts a Play/Pause control as well as a Select button, while the four other buttons—labeled Home, Return, Right, and Left—allow the settings menus and music library to be navigated in conjunction with the scroll wheel.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">On the QP1R's top edge are two 3.5mm jacks. The left-hand jack is for headphones, the right-hand one for both analog (line level) and digital (optical S/PDIF) outputs. The line output can be set for fixed or variable level. To the right of the jacks is a conventional rotary volume control, protected by extensions of the aluminum frame. As supplied, there were two choices for maximum gain, High and Low, but with the latest firmware (HW v.4 and SW v.1.02), released during the review period, there are now three gain settings, to allow the player's output be optimized for specific headphones. The output impedance is specified as 0.15 ohm, which means the QP1R should have no problem driving even low-impedance in-ear monitors. The latest firmware also implements two independent octave-band graphic equalizers. As these offer up to ±6dB of adjustment, activating each drops the overall volume by 6dB, to avoid digital clipping.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> </span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">image: </span></span><a href="http://cdn.stereophile.com/images/1215quest.inside.jpg" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">http://cdn.stereophile.com/images/1215quest.inside.jpg</span></span></a><img alt="1215quest.inside.jpg" src="http://cdn.stereophile.com/images/1215quest.inside.jpg" /></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> </span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">The player's base has a micro-USB port flanked by two slots, each of which will accept a microSD card of up to 128GB capacity, for a maximum storage of 288GB. Questyle recommends FAT32-formatted cards, but I had no problems with an exFAT-formatted 64GB card. The micro-USB port allows the QP1R's 3300mAh lithium-polymer battery to be charged by a host computer (no AC adapter is supplied). Charging is said to take eight hours from a USB port.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">The QP1R supports the regular PCM file formats—ALAC, APE, FLAC, AIFF, WAV, WMA Lossless—up to 24 bits and 192kHz. It also supports both DSD64 and DSD128 files, in DFF and DSF formats. The DAC chip is a Cirrus Logic CS4398, which features a combined multibit delta-sigma architecture operating up to 192kHz. The CS4398 handles DSD data natively, according to its datasheet, and is the same chip used in Astell&amp;Kern's well-regarded </span></span><a href="http://www.stereophile.com/content/astellkern-ak240-portable-media-player" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">AK240 portable media player</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Questyle says that the QP1R has three voltage-stabilized power stages, and that its headphone amplifier features a patented current-mode topology with discrete devices biased into class-A. (The player did get warm after playing continually for an hour or so.) Operating in current mode is said to offer low noise and very wide closed-loop bandwidth, even after the application of negative feedback. Having learned my electrical engineering in The Age of Tubes, which are voltage-mode devices, I have never been able to get my head around current-mode circuits, so I will have to take Questyle's claims on trust. It's what it sounds like that matters.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><strong>Use</strong></span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Loading both the QP1R's internal memory and the microSD cards is a simple matter of connecting the player to a host computer and drag'n'dropping the audio files onto the respective desktop icons. When the icons are ejected in the usual manner and the USB connection is broken, the player automatically scans its storage and rebuilds its music library. (There is also a manual option for doing this.)</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Questyle claims a battery life of up to 10 hours, which seemed about right. The QP1R has a tactile feedback feature that I found invaluable: Whenever one of its buttons is pushed, the player vibrates briefly. However, I had some problems with both the scroll wheel and the touchbuttons. Using the QP1R in the office, with it lying on the desk next to my keyboard, the wheel and buttons would respond only intermittently. I found I had to hold the player to get consistent operation. But I loved the multilevel Return button, which got me quickly back to the Now Playing screen after I'd been adjusting, say, the equalizer settings.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><strong>Listening</strong></span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">I found the QP1R's graphic equalizer useful with the AudioQuest NightHawk headphones, which Herb Reichert reviews in this issue's "</span></span><a href="http://www.stereophile.com/content/gramophone-dreams-7" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Gramophone Dreams</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">" column. To sound neutral, these 'phones benefited from a slight, +2dB boost at 8Hz and above, and an equally slight cut at 62Hz and below. My </span></span><a href="http://www.stereophile.com/content/audeze-lcd-x-headphones" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Audeze LCD-X</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> and </span></span><a href="http://www.stereophile.com/content/ultimate-ears-18-pro-ear-headphones" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Ultimate Ears 18 Pro</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> headphones were okay with the Questyle's equalizer disabled, however. The following comments are an amalgam of my experience with all three headphones.</span></span></p>
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<p><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">Read more at </span></span><a href="http://www.stereophile.com/content/questyle-audio-qp1r-hi-rez-portable-player#USB8fMFAzxcWbA8U.99" rel="external nofollow"><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">http://www.stereophile.com/content/questyle-audio-qp1r-hi-rez-portable-player#USB8fMFAzxcWbA8U.99</span></span></a></p>
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<p><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">Consistent throughout my auditioning of the QP1R was a sense of ease to the sound, coupled with clarity. I never got the feeling that recorded detail was being unnaturally spotlit, but I could hear deep into recordings. Alto saxophonist Paul Desmond's clam in the second verse of "Blue Rondo à la Turk," from the Dave Brubeck Quartet's </span></span><em>Time Out</em><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;"> (DSD64 file, CBS Legacy/Acoustic Sounds), was more audible than I'm used to—I have never understood why this take was used for the master (footnote 1), given this problem, nor have I read anyone commenting on it. Similarly, there's a clumsy high-register trill on the concertino trumpet in the first movement of Bach's Brandenburg Concerto 2, performed a whole step lower than concert pitch by the Academy of Ancient Music, directed from the harpsichord by Richard Egarr (24/88.2 ALAC file from Harmonia Mundi HMU 807461.62). This had been one of my 2010 </span></span><a href="http://www.stereophile.com/content/2010-records-die-page-2" rel="external nofollow">Records to Die For</a><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">," but I hadn't been aware of the problem with the trill until I listened to it with the Questyle player driving the Ultimate Ears in-ear monitors. Now, of course, I hear it all the time, no matter what gear I'm using.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">The QP1R dug deep into recorded acoustics. My favorite set of the complete Beethoven Violin Sonatas is by Augustin Dumay accompanied by Maria Joa&amp;Q#227;o Pires, which we made our "</span></span><a href="http://www.stereophile.com/recordingofthemonth/778/index.html" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Recording of the Month</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">" for February 2003. In the Sonata 10 in G, Op.96 (ALAC rip from CD, Deutsche Grammophon 471 495-2), Dumay's violin sounds as if recorded in a smaller, drier hall than was Pires's piano. By contrast, playing the performance of this sonata by violinist David Abel and pianist Julie Steinberg (24/192k needle drop from Wilson Audio W-8315), our "</span></span><a href="http://www.stereophile.com/content/recording-february-1984-beethovenenescu-violin-sonatas" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Recording of the Month</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">" for February 1984, through the Questyle revealed that while Abel and Steinberg were closer to the mikes, both instruments were clearly being played and recorded in the same space. But with both recordings, the QP1R got the tonalities of the instruments correct.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Catching the PBS broadcast of Simon and Garfunkel's Concert in Central Park, from 1981, during Pledge Week reminded me that it had been a while since I'd played Paul Simon's 2012 album, </span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><em>Live in New York City</em></span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> (16/44.1 ALAC files ripped from CD, Hear Music). This is possibly the best live band Simon ever put together, with guitarist/saxophonist Mark Stewart acting as music director and the extraordinary multi-instrumentalist Jim Oblon on drums. And while the late Phil Ramone couldn't resist the pressure to mix this album </span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><em>loud</em></span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">, listening to bass guitarist Bakithi Kumalo reprising his part in "Diamonds on the Soles of Her Shoes" with the Questyle driving the Audeze headphones was as good as it gets. The bass had the right combination of articulation and weight to its sound.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">The song premiered, of course, on </span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><em>Graceland</em></span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">, and in 2012 I'd bought the 25th-anniversary reissue (24/96 ALAC file, Warner Bros./HDtracks). In general, I was disappointed at how this classic album, too, had fallen victim to the Loudness Wars. Given that the people who would buy this edition would be old farts like me, who loved the original's openness of sound and lack of overall compression, why was it felt necessary to reduce its dynamic range for the reissue? But an unexpected bonus on this edition was the demo version of "Diamonds on the Soles of Her Shoes," with Kumalo's virtuosic bass line front and center under the voices in the deconstructed mix. Again, with the Questyle, this was as good as headphone listening can get.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">But as impressed as I was with the QP1R, it was time to hear how it stacked up against the other portable hi-rez products I've reviewed.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><strong>Against the Aurender Flow</strong></span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Last June, when I reviewed the </span></span><a href="http://www.stereophile.com/content/aurender-flow-da-headphone-amplifier" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Flow D/A headphone amplifier</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> ($1295), I liked its sound a lot, but felt that its light tonal balance would be a better match with relatively dark-sounding headphones like the Audeze LCD-Xes than with headphones, such as </span></span><a href="http://www.stereophile.com/headphones/sennheiser_hd800_headphones/index.html" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Sennheiser's HD-800</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">, that have a similar character in the treble. As the Flow has a TosLink input, it would be easy to compare it with the QP1R, using an optical cable to drive the Flow from the latter's optical S/PDIF output and switching the LCD-X headphones from the player to the DAC.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Or so I thought. It turned out that the Questyle's Line and Headphone outputs can't be operated in parallel—inserting the TosLink cable in the Line Output mutes the QP1R's Headphone output. The first ¼"-to-3.5mm adapter cable I tried to use with the Audezes was fouled by the flange around the Questyle's output jack, meaning it played in mono unless I held it in place—and every time I unplugged the headphones from the Flow, the latter's volume was reset to "0."</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">image: </span></span><a href="http://cdn.stereophile.com/images/1215quest.withwave.jpg" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">http://cdn.stereophile.com/images/1215quest.withwave.jpg</span></span></a></p>
<p><img alt="1215quest.withwave.jpg" src="http://cdn.stereophile.com/images/1215quest.withwave.jpg" /></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">But once I'd worked out how to overcome those operational difficulties, I </span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><em>could</em></span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> compare the two, matching the levels by ear. Using the 24/176.4k AIFF file of David Abel and Julie Steinberg's recording of Brahms's Violin Sonata 1 (Wilson Audiophile)—I was pleased to find that the QP1R's TosLink output </span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><em>did</em></span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> operate at this sample rate—the Questyle's and Aurender's treble balances sounded very similar. The piano's low frequencies had slightly less weight through the QP1R, a touch more authority through the Flow. This was with the LCD-X headphones.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">Through the AudioQuest NightHawk headphones, the Aurender's low-frequency weight with "Heart Is a Drum," from Beck's </span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><em>Morning Phase</em></span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> (24/96 ALAC file, Capitol/HDtracks), became too much of a good thing. Even with the EQ bypassed, the Questyle's lighter lows allowed me to hear a bit deeper into the mix with this bass-heavy track, although, paradoxically, I ended up preferring "Lose Yourself to Dance," from Daft Punk's </span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><em>Random Access Memories</em></span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> (24/88.2 ALAC file, Columbia/HDtracks), through the Flow, which had a tad more midrange presence.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><strong>Against the Astell&amp;Kern AK100</strong></span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">The first high-end portable player I reviewed was the Astell&amp;Kern AK100 ($699), which I wrote about in </span></span><a href="http://www.stereophile.com/content/astellampkern-ak100-portable-media-player" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">August 2013</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> and subsequently purchased. Through the Audeze LCD-X headphones, Beck's "Heart Is a Drum" sounded lighter in weight with the A&amp;K than with the Questyle. This may well be due to the first-generation AK100 having a higher source impedance, though this character added to the player's sense of low-frequency articulation. More important, the midrange was more fleshed out with the Questyle QP1R, Beck's voice sounding better separated from the other instruments in the mix. The Questyle's top octave also seemed slightly more extended when I switched to the NightHawks.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><strong>Against the PonoPlayer</strong></span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">I reviewed the PonoPlayer ($399) in </span></span><a href="http://www.stereophile.com/content/pono-ponoplayer-portable-music-player" rel="external nofollow"><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">April 2015</span></span></a><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">. Sticking with the NightHawks in conventional single-ended mode, the double bass in Dave Brubeck's "Three to Get Ready," from </span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><em>Time Out</em></span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> (DSD64 file, Columbia/Acoustic Sounds), had a touch more low-frequency weight through the Questyle than through the Pono, though the Pono reproduced the piano with more midrange body. The instrument sounded slightly more ethereal with the QP1R, though the hint of room acoustic around the stabbed piano chords just before the final statement of the theme was more developed with the Questyle. In "All or Nothing At All," from Diana Krall's </span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><em>Love Scenes</em></span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> (DSD64 file, Verve/Acoustic Sounds), Krall's voice sounded a little more three-dimensional through the Pono, though again, the double bass with which she duets at the start of the track had a bit more low-frequency weight through the Questyle.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">With Beck's "Heart Is a Drum," the Pono sounded too thick in the upper bass, the Questyle doing a slightly better job of delineating the individual elements in this complex mix. This was with the AudioQuest NightHawk headphones; the more open-sounding Audeze LCD-Xes worked better with the PonoPlayer, though the Questyle still had greater low-frequency weight with these headphones.</span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><strong>Conclusion</strong></span></span></p>
<p><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;">I enjoyed my time with the Questyle QP1R, though I never got entirely comfortable controlling the player with its scroll wheel. And with the slightly-less-than-optimal performance at the top and bottom of its dynamic-range envelope (see "Measurements"), users should make sure they use the gain setting most appropriate for their specific headphones. But the QP1R is beautiful in appearance, and equally beautiful in sound quality with both hi-rez PCM and DSD files—I can confidently recommend it. And unlike the PonoPlayer, it </span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"><em>does</em></span></span><span style="color:#333333;"><span style="font-family:arial, helvetica, sans-serif;"> fit in my shirt pocket. Just.</span></span></p>
<p> </p>
<p> </p>
<p><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">Footnote 1: Subsequent to the publication of this review, a reader emailed me to let me know that unlike the rest of the tracks on </span></span><em>Time Out</em><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">, which had been recorded in Columbia's 30th Street Studio in New York, "Blue Rondo à la Turk" had been recorded by a very young Richard Majestic during rehearsals at Brubeck's house, in the sun room. Columbia edited the two hours of rehearsal tapes for "Blue Rondo" to produce the version released on </span></span><em>Time Out</em><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">.—</span></span><strong>John Atkinson</strong></p>
<p><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">Read more at </span></span><a href="http://www.stereophile.com/content/questyle-audio-qp1r-hi-rez-portable-player-page-2#5P1wuFzzTSPzbf7q.99" rel="external nofollow"><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">http://www.stereophile.com/content/questyle-audio-qp1r-hi-rez-portable-player-page-2#5P1wuFzzTSPzbf7q.99</span></span></a></p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p><strong>Description: </strong><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">Portable music player with 32GB internal memory and 2 microSD slots, each capable of accepting up to 128GB. Compatible file formats: FLAC ALAC, WAV, AIFF, AAC (unprotected), MP3. Compatible sample rates: up to 192kHz and DSD128. Compatible bit depths: 16–24. Outputs: headphone (3.5mm jack), line/TosLink (3.5mm dual jack). Frequency response: 20Hz–20kHz, ±0.1dB. THD+N: 0.0006%. Output impedance: 0.15 ohm. Maximum output level: 1.9V (High), 1V (Middle), 530mV (Low). Power supply: 3300mAH rechargeable lithium-polymer battery. Supplied accessories: micro-USB cable. Firmware: supplied with HW v.3 and SW v.0.07 Beta, updated toward end of review period to HW v.4 and production SW v.1.02.</span></span></p>
<p><strong>Dimensions: </strong><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">5.25" (134mm) L by 2.4" (61mm) W by 0.6" (16mm) D. Weight: not specified.</span></span></p>
<p><strong>Finishes: </strong><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">Champagne Gold or Space Gray aluminum and Gorilla Glass.</span></span></p>
<p><strong>Serial number of unit reviewed: </strong><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">10709500023.</span></span></p>
<p><strong>Prices: </strong><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">QP1R, $899; QP1, $599. Approximate number of dealers: 23, plus select online retailers.</span></span></p>
<p><strong>Manufacturer: </strong><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">Questyle Audio Technology Co., Ltd., Suite 804, Building B, Jialin Highrise, No.2001, Shennan Road, Futian District, Shenzhen, China. Tel: (86) 755-82835670. Fax: (86) 755-82842083. US office: Questyle North America Inc., 7848 W. Sahara Avenue, Las Vegas, NV 89117. Tel: (702) 751-9978. Fax: (818) 697 9068. Web: </span></span><a href="http://www.questyleaudio.com/" rel="external nofollow">www.questyleaudio.com</a><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">.</span></span></p>
<p><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">Read more at </span></span><a href="http://www.stereophile.com/content/questyle-audio-qp1r-hi-rez-portable-player-specifications#9gp7MhwUcyZZtmLS.99" rel="external nofollow"><span style="color:#000000;"><span style="font-family:arial, helvetica, sans-serif;">http://www.stereophile.com/content/questyle-audio-qp1r-hi-rez-portable-player-specifications#9gp7MhwUcyZZtmLS.99</span></span></a></p>
]]></description><guid isPermaLink="false">213118</guid><pubDate>Fri, 04 Dec 2015 00:58:10 +0000</pubDate></item><item><title>Headphone com dois falantes (duas vias)</title><link>https://autoforum.com.br/topic/195146-headphone-com-dois-falantes-duas-vias/</link><description><![CDATA[
<p>Recebi uma propaganda e achei interessante compartilhar.</p>
<p> </p>
<p>Um fonte de ouvido com dois falantes no mesmo invólucro</p>
<p> </p>
<p></p>
<div style="text-align:center;"><img alt="MDuo_2.png" src="http://www.meelec.com/v/vspfiles/assets/images/MDuo_2.png" /></div>
<p></p>
<p>														 			</p>
<p> </p>
<p> </p>
<p><a href="http://www.youtube.com/watch?list=PL1B10CF151F2FFE9A&amp;v=34PKlwO2Sks" rel="external nofollow">http://www.youtube.com/watch?list=PL1B10CF151F2FFE9A&amp;v=34PKlwO2Sks</a></p>
]]></description><guid isPermaLink="false">195146</guid><pubDate>Sat, 25 Jan 2014 15:59:02 +0000</pubDate></item><item><title>Fone AKG K3003 - 3 vias (dois armature e um dinamic driver)</title><link>https://autoforum.com.br/topic/196676-fone-akg-k3003-3-vias-dois-armature-e-um-dinamic-driver/</link><description><![CDATA[
<p><img alt="AKG-K3003.jpg" src="http://www.hardwarezone.com.ph/files/img/2012/06/AKG-K3003.jpg" /></p>
<p> </p>
<p><a href="http://www.youtube.com/watch?v=5D8pU2b0TME" rel="external nofollow">http://www.youtube.com/watch?v=5D8pU2b0TME</a></p>
<p> </p>
<p><img alt="AKG_k3003_exploded.jpg" src="http://www.whathifi.com/sites/whathifi.com/files/images/newsarchive2/AKG_k3003_exploded.jpg" /></p>
<p> </p>
<p><img alt="akg-k3003-3.jpg" src="http://static.trustedreviews.com/94/000024c55/4e72/akg-k3003-3.jpg" /></p>
<p>filtros</p>
<p> </p>
<p><img alt="AKG_headphones_5.jpg" src="http://www.hardwarezone.com.ph/files/img/2012/06/AKG_headphones_5.jpg" /></p>
<p>trocando filtros</p>
<p> </p>
<p><img alt="fa737abe4f02750faf2e422f9e44511b.png" src="http://en.goldenears.net/en/files/attach/images/108/318/012/fa737abe4f02750faf2e422f9e44511b.png" /></p>
<p>diferença na resposta de frequencia nos 3 tipos de filtros</p>
<p> </p>
<p> </p>
<p> </p>
<p><img alt="akg0729_k3003.jpg" src="http://lyra-media.com/ufiles/akg0729_k3003.jpg" /></p>
<p>detalhe do alto-falante normal (preto)(graves) e o armature driver com duas capsulas (medio e agudo)</p>
<p> </p>
<p>Review: <a href="http://www.trustedreviews.com/akg-k3003_Headphones_review" rel="external nofollow">http://www.trustedreviews.com/akg-k3003_Headphones_review</a></p>
<p><a href="http://www.whathifi.com/review/akg-k3003i" rel="external nofollow">http://www.whathifi.com/review/akg-k3003i</a></p>
<p> </p>
<p>Review técnico com gráficos:</p>
<p><a href="http://en.goldenears.net/12318" rel="external nofollow">http://en.goldenears.net/12318</a></p>
<p> </p>
<p> </p>
<p>Comparação com outro fone 3 vias </p>
<p><img alt="800x314px-LL-eae56030_EX1000-K3003-1024.jpeg" src="http://cdn.head-fi.org/e/ea/800x314px-LL-eae56030_EX1000-K3003-1024.jpeg" /></p>
<p>Left: Sony EX1000  |   Right: AKG K3003 (reference filters)</p>
<p>Source: innerfidelty data sheets</p>
<p> </p>
]]></description><guid isPermaLink="false">196676</guid><pubDate>Wed, 26 Mar 2014 03:15:02 +0000</pubDate></item><item><title>Bem vindo ao sub-f&#xF3;rum Head -phones</title><link>https://autoforum.com.br/topic/166506-bem-vindo-ao-sub-f%C3%B3rum-head-phones/</link><description><![CDATA[
<p>Este sub-fórum foi sugestão do nosso colega Pad que assim como muitas outras pessoas, tem interesse em encontrar bons fones de ouvidos ou equipamentos para utilizar com os fones, como amplificadores, processadores de áudio, etc.</p>
<p> </p>
<p>Estejam a vontade para fazer comparativos, sugerir produtos bons, equipamentos com diferenciais, novidades e coisas interessantes.</p>
<p> </p>
<p>Vou mover alguns tópicos sobre o assunto pra cá para termos tudo do mesmo assunto</p>
<p> </p>
<p>Bom divertimento</p>
]]></description><guid isPermaLink="false">166506</guid><pubDate>Fri, 12 Aug 2011 20:41:05 +0000</pubDate></item><item><title>Transformando c&#xE1;psula de bala em headphone</title><link>https://autoforum.com.br/topic/204966-transformando-c%C3%A1psula-de-bala-em-headphone/</link><description><![CDATA[
<p><strong>		</strong><a href="http://sploid.gizmodo.com/video-heres-how-to-transform-bullets-into-earphones-1667590270" rel="external nofollow"><strong>How to transform bullets into earphones</strong></a></p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p><img alt="f7pni1zdceqal10mlxip.gif" src="http://i.kinja-img.com/gawker-media/image/upload/s--QX8ewMM1--/f7pni1zdceqal10mlxip.gif" /></p>
<p> </p>
<p>I love seeing the folks of 
</p>
<div class="ipsEmbeddedVideo"><div><iframe width="480" height="270" frameborder="0" allowfullscreen="" data-embed-src="https://www.youtube.com/embed/gJOKCtVwI1E?feature=oembed"></iframe></div></div> do their thing because they take small little objects and creatively turn them into something else entirely. First they transformed a nail into a tiny sword and now they've done the always popular DIY project of turning a bullet into a pair of headphones.<p> </p>
<p><a href="https://www.youtube.com/watch?v=gJOKCtVwI1E" rel="external nofollow">https://www.youtube.com/watch?v=gJOKCtVwI1E</a></p>
]]></description><guid isPermaLink="false">204966</guid><pubDate>Sun, 07 Dec 2014 22:17:38 +0000</pubDate></item><item><title>{IPOD CLASSIC} Travamento do infeliz</title><link>https://autoforum.com.br/topic/202577-ipod-classic-travamento-do-infeliz/</link><description><![CDATA[
<p>Na verdade nem procurei muito na net uma solução e quero saber de vocês se já tiveram o mesmo problema. Possuo um ipod classic 160g e do nada ele para de funcionar e aparece ou a famosa maça ou o relógio ? e não toca mais nada.</p>
<p>Deixo ele parado    um tempo  e o danado volta a  funcionar. As vezes preciso colocar o dito cujo em sincronia com o itunes para que ele volte a atividade normal.</p>
<p> </p>
<p>Espero que possam me ajudar,</p>
<p> </p>
<p>Obrigado!!!!!</p>
]]></description><guid isPermaLink="false">202577</guid><pubDate>Sat, 27 Sep 2014 22:15:47 +0000</pubDate></item><item><title>HeadPhones</title><link>https://autoforum.com.br/topic/200031-headphones/</link><description><![CDATA[
<p>Estou a procura de bons e baratos fones...</p>
<p>Já procurei infos, mas nada que me tirasse as duvidas.</p>
<p>Queria fones para ouvir especialmente rock n roll.</p>
<p>Dicas?</p>
]]></description><guid isPermaLink="false">200031</guid><pubDate>Thu, 03 Jul 2014 00:41:25 +0000</pubDate></item><item><title>fone para celular</title><link>https://autoforum.com.br/topic/198532-fone-para-celular/</link><description><![CDATA[<p>Pessoal nunca tive um fone bom... e agora q o meu cel da Samsung lite II esta sem fone gostaria se saber se da pra se ouvir em alto e bom som num cel mesmo. .. posso gastar ate 200 reais e isso ja com frete...rsrsrs</p>]]></description><guid isPermaLink="false">198532</guid><pubDate>Mon, 19 May 2014 00:29:03 +0000</pubDate></item><item><title>[Duvida] Amplificador para fones</title><link>https://autoforum.com.br/topic/200310-duvida-amplificador-para-fones/</link><description><![CDATA[
<p>fala ae galera!!! </p>
<p> </p>
<p>seguinte... to olhando um amplificador de fones... sei q o Fiio E6 eh muito bom, tem otimos reviews na internet...</p>
<p> </p>
<p>porem andei dando uma olhada no site da DX, e encontrei por la um Amp Valvulado... </p>
<p> </p>
<p><a href="http://www.dx.com/pt/p/fiio-e6-portable-headphone-amplifier-102124#.U8Hi5cRDurU" rel="external nofollow">http://www.dx.com/pt/p/fiio-e6-portable-headphone-amplifier-102124#.U8Hi5cRDurU</a> (Fiio E6... outra duvida... sera q é original msm?)</p>
<p> </p>
<p><a href="http://www.dx.com/pt/p/6n11-class-a-hybrid-tube-headphone-amplifier-red-147151#.U8HjfMRDurU" rel="external nofollow">http://www.dx.com/pt/p/6n11-class-a-hybrid-tube-headphone-amplifier-red-147151#.U8HjfMRDurU</a> (Amp Valvulado, pelas Specs, parece ser melhor q o Fiio, mas pelo q li, ele capta qualquer interferencinha, e so pode ser usado na tomada)</p>
<p> </p>
<p> </p>
<p>Os fones a serem amplificados, serão esses:</p>
<p> </p>
<p><a href="http://www.sonicelectronix.com/item_46773_NuForce-NE600X-BLACK.html" rel="external nofollow">http://www.sonicelectronix.com/item_46773_NuForce-NE600X-BLACK.html</a></p>
<p> </p>
<p><a href="http://www.amazon.com/Monoprice-108323-Premium-Hi-Fi-Headphone/dp/B007SP2CO2" rel="external nofollow">http://www.amazon.com/Monoprice-108323-Premium-Hi-Fi-Headphone/dp/B007SP2CO2</a></p>
<p> </p>
<p> </p>
<p>Qual seria o melhor amp?? se o Fiio for original, to quase indo pra ele... pq da pra usar com cel tbm!!!</p>
<p> </p>
<p>Abraçao!!</p>
]]></description><guid isPermaLink="false">200310</guid><pubDate>Sun, 13 Jul 2014 02:10:44 +0000</pubDate></item><item><title>Site que Compara Headfones Online</title><link>https://autoforum.com.br/topic/200319-site-que-compara-headfones-online/</link><description><![CDATA[
<p>Para quem quer ter uma ideia de como faz diferença de um fone para outro, sem ter que compra-los, pode faze-lo online em um site bem legal que fez esta comparação, e dá para ouvir bem a diferença da assinatura sônica de cada um em:</p>
<p> </p>
<p><a href="http://www.sonicsense.com/blog/headphone-shootouts/which-headphones-are-best-listen-here-for-yourself#.U3Zox-ZdUmQ" rel="external nofollow"><strong>http://www.sonicsens...lf#.U3Zox-ZdUmQ</strong></a></p>
<p> </p>
<p>Veja como eles fizeram o teste e todos os cuidados no video abaixo.</p>
<p> </p>
<p><strong>
</strong></p>
<div class="ipsEmbeddedVideo"><div><iframe width="480" height="270" frameborder="0" allowfullscreen="" data-embed-src="https://www.youtube.com/embed/jnK1Gq7txYA?feature=oembed"></iframe></div></div>
]]></description><guid isPermaLink="false">200319</guid><pubDate>Sun, 13 Jul 2014 12:05:14 +0000</pubDate></item><item><title>Amplificador. Proced&#xEA;ncia?</title><link>https://autoforum.com.br/topic/198425-amplificador-proced%C3%AAncia/</link><description><![CDATA[
<p>Alguém saberia opinar sobre este amp?</p>
<p> </p>
<p><a href="http://www.dx.com/p/50w-audio-digital-power-amplifier-mp3-player-with-usb-host-aux-black-71659#.U3ULpfldVHU" rel="external nofollow">http://www.dx.com/p/50w-audio-digital-power-amplifier-mp3-player-with-usb-host-aux-black-71659#.U3ULpfldVHU</a></p>
]]></description><guid isPermaLink="false">198425</guid><pubDate>Thu, 15 May 2014 19:11:08 +0000</pubDate></item><item><title>Philips UpTown, phone de ouvido</title><link>https://autoforum.com.br/topic/197480-philips-uptown-phone-de-ouvido/</link><description><![CDATA[
<p>Alguém já ouviu? um amigo meu ouviu e gostou muito pelo preço praticado no BR, disse que se compara a alguns com preço mais elevado que ele já ouviu.</p>
<p> </p>
<p>alguém?</p>
<p> </p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Som:</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Sistema acústico: Fechado</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Tipo de ímã: Neodímio</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Bobina de voz: CCAW</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Diafragma: Cúpula de mylar</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Resposta em frequência: 12 - 23500 Hz</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Impedância: 32 Ohm</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Potência máxima de entrada: 30 mW</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Sensibilidade: 103 dB</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Diâmetro da caixa acústica: 40 mm</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Tipo: Dinâmico</span></span></span></p>
<p> </p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">-Conectividade</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Conexão por cabo: 2 paralelos, simétricos</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Comprimento do cabo: 1,2 m</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Conector: 3,5 mm estéreo</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Acabamento do conector: Folheado a ouro 24 k</span></span></span></p>
<p><span style="color:#000000;"><span style="font-family:Arial, sans-serif;"><span style="font-size:12px;">Tipo de cabo: OFC</span></span></span></p>
<p> </p>
<p><a href="https://www.balaodainformatica.com.br/Produto/49591/Fones-de-Ouvido-Uptown-com-Al%C3%A7a-CitiScape-Resposta-em-Frequ%C3%AAncia-12-23500-Hz-(SHL5905BK_10" rel="external nofollow">https://www.balaodainformatica.com.br/Produto/49591/Fones-de-Ouvido-Uptown-com-Al%C3%A7a-CitiScape-Resposta-em-Frequ%C3%AAncia-12-23500-Hz-(SHL5905BK_10</a>)</p>
<p> </p>
<p>abs</p>
]]></description><guid isPermaLink="false">197480</guid><pubDate>Wed, 16 Apr 2014 22:35:17 +0000</pubDate></item><item><title>**Introdu&#xE7;&#xE3;o aos Amplificadores**</title><link>https://autoforum.com.br/topic/173367-introdu%C3%A7%C3%A3o-aos-amplificadores/</link><description><![CDATA[
<p>Pessoal, como estou me animando por este caminho do Hi-End de baixo custo, estou colocando aqui a disposição um pequeno Texto com descrição aos amplificadores para fones de ouvido, não sendo de minha autoria. </p>
<p>Segue para leitura e discussão:</p>
<p> </p>
<p><a href="http://imageshack.us/photo/my-images/18/279682888220.jpg/" rel="external nofollow"><img alt="279682888220.jpg" src="http://img18.imageshack.us/img18/1457/279682888220.jpg" /></a></p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p>Uploaded with <a href="http://imageshack.us" rel="external nofollow">ImageShack.us</a></p>
<p> </p>
<p> </p>
<p> Começando do começo, algumas características físicas relevantes em se tratando de fone de ouvido: impedância e sensibilidade.</p>
<p> </p>
<p>A impedância é medida em ohms, e quanto mais alta, maior dificuldade haverá de se "empurrar" o fone. O fone branco do ipod tem uma impedância de 32ohms, e a de um Sennheiser HD650, 300 ohms, por exemplo.</p>
<p> </p>
<p>A sensibilidade, medida em dB SPL/mW (ou erroneamente: dB/mW), dá uma indicação de pressão sonora por mW de potência aplicada ao fone. Quanto maior a sensibilidade, menos potência é necessária para fazer com que um fone toque alto. Os fones in-ear costumam ter sensibilidade altíssima, como os UE Triple.fi de 117 db SPL/mW. Já o HD650 tem 103 db SPL/mW, bem menos.</p>
<p> </p>
<p>Agora, a pergunta: para que alguém necessita de amplificadores de fones de ouvido? As saídas de fones do iPod, celulares, MP3s xing-ling, mini-systems, computadores, placas de som, receivers e etc não são suficientemente potentes para fazer um fone tocar alto?</p>
<p> </p>
<p>A grande maioria dos fones fones, principalmente os low-end, in-ear, ear-buds, de baixa impedância e/ou alta sensibilidade, realmente não necessita de um amplificador para tocar o som em um volume adequado.</p>
<p> </p>
<p>Já os fones mais refinados normalmente (mas nem sempre) têm uma impedância maior, aliados a uma sensibilidade menor, o que torna bem mais difícil de serem empurrados.</p>
<p> </p>
<p>Mas o objetivo principal do uso de um amplificador não é tanto poder-se aumentar o volume tocado nos fones (ouvir muito alto é coisa ou de adolescentes.. ou de surdos.. rss), mas sim, aumentar-se a qualidade sonora, através de uma amplificação melhor que a originária do player.</p>
<p> </p>
<p><a href="http://imageshack.us/photo/my-images/338/connectx.jpg/" rel="external nofollow"><img alt="connectx.jpg" src="http://img338.imageshack.us/img338/712/connectx.jpg" /></a></p>
<p> </p>
<p>Uploaded with <a href="http://imageshack.us" rel="external nofollow">ImageShack.us</a></p>
<p> </p>
<p> </p>
<p>A amplificação de um iPod, por exemplo, é terrivelmente pobre, ainda mais se você usar algum tipo de equalização. No fone medíocre que acompanha o iPod você não sente, mas em qualquer fone mais refinado, como o triple.fi, as distorções no som ficarão evidentes. </p>
<p> </p>
<p>É aí que entram os amplificadores, melhorando muito a qualidade de amplificação de players e possibilitando que você utilize seus fones hifi. Eles são indicados mesmo para os fones de baixa impedância e/ou alta sensibilidade, como os in-ear da Ultimate Ears ou os Grado.</p>
<p> </p>
<p>Existem diversos fabricantes de amplificadores de fones. É um mercado de nicho, basta ver quantos de seus amigos possuem um amplificador de fones, ou melhor, quantos já ouviram falar de um amplificador de fones. Por isso, a fabricação deles é em grande parte artesanal, e você os encomenda direto do fabricante. A maioria tem a política: use por 30 dias e se não estiver satisfeito, devolvemos seu dinheiro, justamente por não ser possível ouvi-los em show-rooms.</p>
<p> </p>
<p>Quanto aos tipos, eu o dividiria da seguinte maneira:</p>
<p> </p>
<p>1. portáteis, alimentados por baterias, cujo uso principal é com o pé-na-estrada, acoplados a um iPod ou a um outro player portátil</p>
<p> </p>
<p>2.1 de mesa transistorizados</p>
<p> </p>
<p>2.2 de mesa valvulados</p>
<p> </p>
<p>Não vou entrar em detalhes sobre a diferença entre uma amplificação transistorizada e uma valvulada, mas da breve experiência que tenho com meu valvulado recém-chegado Glow Amp One (www.glow-audio.com), eu diria que o som do valvulado é bem mais agradável e menos fatigante de se ouvir.</p>
<p> </p>
<p>Algumas features adicionais que os amplificadores podem possuir:</p>
<p> </p>
<p>- crossfeed: deixa "vazar" um pouco do canal direito no esquerdo e vice-versa, simulando a audição estereofônica em caixas de som. </p>
<p> </p>
<p>- DAC: alguns amplificadores já vêm com DAC embutido, bastando ligá-los num micro via cabo USB. Tornam-se então uma placa de som externa, bastando plugar seu fone para ouvir.</p>
<p> </p>
<p>- casador de impedância / controle de ganho: alguns possuem uma chave de ganho / impedância, permitindo adequar a amplificação de acordo com o fone utilizado</p>
<p> </p>
<p>- saída pré-amplificada</p>
<p> </p>
<p>- saída para caixas acústicas</p>
<p> </p>
<p><a href="http://imageshack.us/photo/my-images/838/394086825402.jpg/" rel="external nofollow"><img alt="394086825402.jpg" src="http://img838.imageshack.us/img838/3589/394086825402.jpg" /></a></p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p>Uploaded with <a href="http://imageshack.us" rel="external nofollow">ImageShack.us</a></p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p>FONTE:  </p>
<p> </p>
<p> </p>
<p>HT Fórum - Usuário: fhissataka (Fernando) </p>
<p>Tópico criado em 31/05/2008</p>
]]></description><guid isPermaLink="false">173367</guid><pubDate>Sat, 14 Jan 2012 01:13:59 +0000</pubDate></item><item><title>**Problema** Amp Valvulado</title><link>https://autoforum.com.br/topic/196630-problema-amp-valvulado/</link><description><![CDATA[
<p>Amigos, estou com um serio problema:</p>
<p> </p>
<p>Adquiri meu amplificador Muse (idêntico ao Bravo) usado no ano de 2012 e que teoricamente estava com defeito na válvula.</p>
<p> </p>
<p>Liguei o mesmo e a válvula EH6922 aquecia normalmente e saia som com muito chiado e estalos. E aquela luz azul que fica embaixo da válvula estava fraca e oscilando sua luminosidade. Deixei o mesmo guardado por quase 1 ano.</p>
<p> </p>
<p> </p>
<p>Comprei uma nova válvula EH6922 na Sta Efigênia em outubro 2013, no mesmo dia a instalei e o problema continuou, mostrando assim que o defeito não seria na válvula (fiquei com 2 válvulas).</p>
<p> </p>
<p>Guardei o mesmo novamente por ter ficado decepcionado.</p>
<p> </p>
<p>Agora em Fevereiro retirei-o da caixa pra fuçar...</p>
<p> </p>
<p>E o mesmo começou a funcionar normalmente!!! </p>
<p> </p>
<p>Com apenas 1 detalhe: a luz azul debaixo da válvula não estava funcionando, mas o som estava ótimo!</p>
<p> </p>
<p> </p>
<p>E assim permaneceu até este sábado (22/03/14) </p>
<p> </p>
<p> </p>
<p>O som voltou a ficar chiado e estalando, insuportável de ser ouvido!</p>
<p> </p>
<p>Mas um detalhe que me chamou a atenção foi que a lâmpada azul debaixo da válvula voltou a acender e oscilar sua luminosidade, e em um momento que luz azul ficou mais forte a válvula chegou a desligar.</p>
<p> </p>
<p>Retirei a válvula esperei esfriar, e a recoloquei mas o som continuou ruim.</p>
<p> </p>
<p> </p>
<p> </p>
<p>Não tem nenhum capacitor estufado, redutores queimados...</p>
<p> </p>
<p> </p>
<p>A fonte esta fornecendo 24,3V</p>
<p> </p>
<p> </p>
<p> </p>
<p>O que fazer????</p>
]]></description><guid isPermaLink="false">196630</guid><pubDate>Mon, 24 Mar 2014 21:53:37 +0000</pubDate></item><item><title>[ Sugest&#xF5;es] Mp3 Player ( player portatil) a prova D'agua</title><link>https://autoforum.com.br/topic/195526-sugest%C3%B5es-mp3-player-player-portatil-a-prova-dagua/</link><description><![CDATA[
<p>E aí pessoal, tudo bem?</p>
<p> </p>
<p> </p>
<p>Corro ou pedalo 3 vezes por semana e já perdi dois Ipods devido ao suor. Gostaria de alguma indicação de algum mp3 de até uns R$ 250,00, que tenha qualidade aceitável.</p>
<p> </p>
<p>Desde já agradeço.</p>
]]></description><guid isPermaLink="false">195526</guid><pubDate>Wed, 12 Feb 2014 17:03:03 +0000</pubDate></item><item><title>Balanced Armature Drivers - Como funciona</title><link>https://autoforum.com.br/topic/195147-balanced-armature-drivers-como-funciona/</link><description><![CDATA[
<p>A Sony foi um dos que fizeram mais barulho para tentar difundir este tipo de reprodutor de áudio.</p>
<p> </p>
<p>Mas depois de 2 anos de lançamento, parece que não deu muito certo e seu mercado é muito restrito.</p>
<p> </p>
<p> </p>
<p> </p>
<p></p>
<div style="text-align:center;"><img alt="sony-xba-section1-1.jpg" src="http://www.sony-asia.com/product/resources/en_AP/images/Overview/PA/headphones/XBA/sony-xba-section1-1.jpg" /></div>
<p></p>
<p>																																								 			</p>
<p> </p>
<p> </p>
<p> </p>
<p></p>
<div style="text-align:center;"><img alt="sony-xba-4-section3-1.jpg" src="http://www.sony-asia.com/product/resources/en_AP/images/Overview/PA/headphones/XBA/sony-xba-4-section3-1.jpg" /></div>
<p></p>
<p>																																								 			</p>
<p> </p>
<p> </p>
<p><a href="http://i.i.cbsi.com/cnwk.1d/i/tim/2012/01/05/Sony_XBA_assortment.jpg" rel="external nofollow"><img alt="Sony_XBA_assortment_610x388.jpg" src="http://asset3.cbsistatic.com/cnwk.1d/i/tim/2012/01/05/Sony_XBA_assortment_610x388.jpg" /></a></p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p><a href="http://www.youtube.com/watch?v=wysWgdDdj30" rel="external nofollow">http://www.youtube.com/watch?v=wysWgdDdj30</a></p>
<p> </p>
<p><a href="http://www.youtube.com/watch?v=1uzFhlpKIvM" rel="external nofollow">http://www.youtube.com/watch?v=1uzFhlpKIvM</a></p>
<p> </p>
<p><a href="http://www.youtube.com/watch?v=aCQ1cg8aAPE" rel="external nofollow">http://www.youtube.com/watch?v=aCQ1cg8aAPE</a></p>
]]></description><guid isPermaLink="false">195147</guid><pubDate>Sat, 25 Jan 2014 16:15:05 +0000</pubDate></item><item><title><![CDATA[B&W P5]]></title><link>https://autoforum.com.br/topic/191879-bw-p5/</link><description><![CDATA[
<p>Pessoal ganhei um leilão no Ebay desse fone da B&amp;W... </p>
<p> </p>
<p>Estou curioso para ouvir, alguém já escutou esse fone? </p>
<p> </p>
<p>Abraço </p>
<p> </p>
<p> </p>
]]></description><guid isPermaLink="false">191879</guid><pubDate>Sun, 01 Sep 2013 14:10:41 +0000</pubDate></item><item><title>Trocar cabos de fone de ouvido.</title><link>https://autoforum.com.br/topic/191842-trocar-cabos-de-fone-de-ouvido/</link><description><![CDATA[
<p>Tenho um AKG K44P que vem originalmente com um conector p2 e um adaptador p10(que perdi).</p>
<p>Essa semana chegou meu DAC, um DAC II do Luis Flugge que tem entrada para p10. Me senti incomodado com a idéia de usar um adaptador xing-ling para conectar um fone bom a um DAC melhor ainda rsrsrs.</p>
<p> </p>
<p>Aí me veio a idéia de aproveitar e trocar os cabos do fone, ou pelo menos trocar o conector.</p>
<p>O que vocês recomendam?</p>
<p> </p>
<p>Até o momento gostei desse aqui : <a href="http://www.musicalgrellmann.com.br/conector-neutrik-np3x-b-p10-estereo.html" rel="external nofollow">http://www.musicalgrellmann.com.br/conector-neutrik-np3x-b-p10-estereo.html</a></p>
]]></description><guid isPermaLink="false">191842</guid><pubDate>Fri, 30 Aug 2013 02:18:44 +0000</pubDate></item><item><title>Fone bluetooth</title><link>https://autoforum.com.br/topic/180868-fone-bluetooth/</link><description><![CDATA[
<p>E ai gente alguem conhece algum fone bt ou wifi que tenha uma qualidade de audio boua?</p>
<p>Graves fortes e bem equalizado..</p>
<p>Dei uma pesquisada mas 90% eh xingling =/</p>
<p>abraços</p>
]]></description><guid isPermaLink="false">180868</guid><pubDate>Tue, 31 Jul 2012 03:04:57 +0000</pubDate></item><item><title>Headphone de at&#xE9; US$100</title><link>https://autoforum.com.br/topic/172479-headphone-de-at%C3%A9-us100/</link><description><![CDATA[
<p>Galera, </p>
<p> </p>
<p>Eu ia comprar um Sennheiser HD201, despretencioso. Não deu certo.</p>
<p>Aí apareceu uma oportunidade, comprei um Bravo V2.</p>
<p>Agora eu tô procurando um fone de ouvido, de até US$100 + o frete.</p>
<p> </p>
<p>Pensei nos Grado SR60i ou SR80i, Klipsch Image One, Denon, Bose, AudioTechnica...</p>
<p> </p>
<p>Não tenho conhecimento algum de fones, busco um fone pra ter de referência.</p>
<p> </p>
<p>Aguardo sugestões.</p>
<p> </p>
<p>Abs.</p>
<p>Henrique</p>
]]></description><guid isPermaLink="false">172479</guid><pubDate>Mon, 26 Dec 2011 01:53:26 +0000</pubDate></item><item><title>Beats Dr. Dre</title><link>https://autoforum.com.br/topic/180827-beats-dr-dre/</link><description><![CDATA[
<p>Minha mãe vai pros EUA, daqui uma semana e meia, vou fala pra ela trazer um headphone da beats pra mim, só que nunca escutei um, e tem uns 3 4 modelos, qual que eu pego?</p>
<p> </p>
<p>Gosto de ouvir musicas estilo eletronica, black, com batidas mas fortes em geral</p>
<p> </p>
<p> </p>
<p>EDIT: E quais as principais diferenças entre eles?</p>
]]></description><guid isPermaLink="false">180827</guid><pubDate>Mon, 30 Jul 2012 04:42:22 +0000</pubDate></item><item><title>Existe fone com qualidade sem ser intra auricular ( press&#xE3;o ), do tipo</title><link>https://autoforum.com.br/topic/190376-existe-fone-com-qualidade-sem-ser-intra-auricular-press%C3%A3o-do-tipo/</link><description><![CDATA[
<p>Fala Galera,</p>
<p> </p>
<p>Eu sei que o título está uma porcaria... hehe..</p>
<p> </p>
<p>Mas já adiantando, sou audiófilo, mas não tenho muita grana. Tenho algumas coisas bacanas, mas tudo Custo Beneficio.</p>
<p> </p>
<p>Eu tenho em casa um AKG 324p, e já tive outros fones tambem, sennheiser, já cheguei a testar uns vagabudinhos, mas não adianta... nenhum entra no meu ouvido esquerdo. O buraco é pequeno, eu coloco ele, e seguro com a mão, na hora que eu tiro a mão ele pula para fora do ouvido... Se eu forçar muito no ouvido, ele até fica pendurado ali, mas ai só vem agudo, fica uma porcaria... O AKG mesmo meu primo ouviu e disse que tem um som excelente, mas não consigo ouvir direito sem segurar o fone no ouvido..</p>
<p> </p>
<p>Tenho outros fones em casa, mas é do tipo Semi-fechado ou fechado... que passa por cima da cabeça... Tenho o Koss Porta Pro, o AKG K44p e o Sennheiser HD360pro. ( é o HD280 versão dobrável. )</p>
<p> </p>
<p>O unico fone que eu consigo usar é o do PSP e o da Apple, aqueles vem vagabundinhos mesmo, que você encaixa na orelha e não no ouvido... Não sei se chama Earbuds, sei lá como que é o nome..</p>
<p> </p>
<p>O problema é que nunca achei nenhum desses voltado para qualidade. Alguem conheçe algum bacaninha? não precisa ser TOP, queria usar na academia mesmo...</p>
<p> </p>
<p>um phillips algo assim já servia legal...</p>
<p> </p>
<p>abração a todos!</p>
<p> </p>
<p>edit: achei um da JBL, será que presta? <a href="http://produto.mercadolivre.com.br/MLB-493031777-fone-jbl-vibe-earbud-branco-original-_JM" rel="external nofollow">http://produto.mercadolivre.com.br/MLB-493031777-fone-jbl-vibe-earbud-branco-original-_JM</a></p>
]]></description><guid isPermaLink="false">190376</guid><pubDate>Wed, 26 Jun 2013 14:43:57 +0000</pubDate></item></channel></rss>
