▆◣乾龙盛（QLS Audio) QA350 MOD V2(升级耳放版）便携式随身版WAV播放器热销

qls_clark

淘宝连接：http://item.taobao.com/item.htm?id=8546401545

QA350 MOD V2摩机版--(耳放部分大升级）

普通版与摩机版提供两个颜色(黑色/银色)
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普通版与摩机版V2内部PCB对比图.

普通版与摩机版V2内部PCB细节对比图.
注：为了不断提高音质及性能，材料或线路如有变更恕不另外通知.
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  QA350 MOD V2主要是升级了QA350标准板的耳放部分(相对于原磨机版或标准版耳放部分有非常大的提升）.
在QA350标准版的基础上耳放部分重新设计了线路，采用AD8397作为新的耳放芯片， AD8397采用Rail-to-Rail结构,可满足较大的压摆需求;输出电流也增加很多, 能更容易推动一些低灵敏度的大耳机; 同时AD8397在失真度、信噪比、分离度等各个方面都要优于MAX9722.

新的耳放部分重新设计了线路, 并重新进行了调音，这次调音为了满足更多朋友的听音需求，历时2个月，前后改了数个版本，最后的版本相比标准版在声音的乐感、层次、动态、音场上都有比较大的提升; MOD V2的低频特别给力，有力度、有下潜. 可以豪不夸张的说:如果是以声论价，QA350 MOD V2仅耳放部分的价值就可达到整机售价的1300元,我们将它与售价1000-2000范围的几款随身耳放做了对比, QA350 MOD V2的耳机输出毫不逊色于某些高端随身耳放.

QA350 MOD V2耳放的输出功率相对标准版提升是比较大的：
标准版的功率： 70mW/16欧; 130mW/32欧; 26mW/150欧; 13mW/300欧;
QA350 MOD V2功率: 500mW/16欧; 250mW/32欧; 97mW/150欧; 49mW/300欧;

QA350 MOD V2同QA350标准版享受相同的质保服务（保修一年）

另外有几点需要说明一下：
1. QA350 MOD V2的整体声音风格是中性偏暧的，如果你对冷声机有特别的喜好我建议你购买QA350标准版.
2. QA350 MOD V2的电池续航相对标准版会减少1/10-1/20的时间(取决于你的耳机）（其实这点时间大部分用户是不会在意的）.
3. 如果你的QA350 MOD V2的电源开关连续超过10天一直没有关闭（处于ON的位置）（即使电池用到屏幕自动没有显示），那么内部电池会因为过放而完全损坏，这时你只能再淘50元重新购买一个电池, 因此请不要忘记给QA350关机.
   而QA350 标准版可以60天连续使电源开关处于ON（一直不关），超过60天电池才会因为过放而损坏.

QA350 MOD V2与QA350标准版在外观上有什么区别呢？
1. QA350 MOD V2在后侧板(电源输入那块）右下角位置印有"MOD V2"的字样.
2. QA350 MOD V2反面贴有Clark亲笔签名的贴纸，并在贴纸上有QA350 MOD V2字样.

老QA350用户可以升级到QA350 MOD V2, 具体操作方式可直接咨询乾龙盛官方销售人员.

其它介绍请看淘宝链接：http://item.taobao.com/item.htm?id=8546401545

midijay

帮顶了，没米。

firz

请问楼主:在不考虑机自带耳放的前提下，550和350那一个好些？

音色控

只支持16bit/44khz，有的低了，不要求32bit/192khz最起码也要24bit/96khz吧。

baichen404

QA350声音很好 数字输出更是亮眼

sunofhhit

支持QLS！希望能更好的产品！

bowei

支持！！！！

peeekkk

一直在T51和QA350之间犹豫，
最后贪图方便入了T51--我的CD都是转成FLAC保存的。
淘宝上买的，还是个存货，买了不到一个月固件就出问题了，郁闷啊

QA350只好再等等了，不能太败..期待涨工资吧，或者发年终奖..

p12bbb

入了一台。打算以后加解码耳放，预算万元，推650。不知道QA350的同轴口会不会成为系统瓶颈。

dishuishuidi

请问这机器能直接使用外接电源当台机用吗？另外新版能不能播MP3？

逍遥62500

请问sd卡速度超过0.3mb/s，在这个速度以上是越快越好还是超过这个数值都一样呢？

得意尽欢

关注了很久, 机器外观, 音质评价上都很能接收. 但是最后还是决定放弃了.

我觉得QA350有一个总体设计的缺陷, 那就是控制方式的问题.
不管机器控制如何简单, 但是功能控制上, 外围不是冗余度不够. 用户操作不够方便.
比如,
直接选择曲目号, 只能在遥控上完成.
控制音量, 只能在主机上完成.
实际上遥控并不是一个补充, 而是非用不可. 而常用的音量控制, 遥控却无能为力.
还有貌似遥控的接收角度也比较有限. 这个可以直接改进吧.
充电口和电源口分开很好, 机器性价比不错. 希望后续产品仍然能够保持良好的性价比.

wojiaoaibai

这个是……v2还是……350？

ew9612

突然看到gx19860411有篇Music和Listening环节的翻译, 基本没有错误, 我把主要的东西理出来并修改了些小问题, 感谢gx19860411的勤劳, 不知道他的GRE考得如何. (原翻译在此http://www.qlshifi.com/bbs/dispb ... p;page=0&star=2)

关于文件:
project86说这机器一个特殊问题是只能播放WAV. 然后试了一些软件, 最后选了Winamp, 建了个名为WAV的文件夹并且转了一大堆WAV文件进去. 想换音乐时, 他会把不同的歌拷到一张SD卡上. 他发现转的歌总是以曲号作为文件名的开头, 然后试着把曲号去掉以免浪费宝贵的显示空间(你们的显示屏确实蛋疼..). 删去曲目后的文件名就会显示出足够的信息以知道自己在听哪首. "One unique issue this device has is that everything must be .WAV format. I tried a few things and ended up liking Winamp the best. It is very easy to convert most any file in your library to a .WAV file. I just made myself a “.WAV” folder and converted a ton of music to that location. Whenever I felt like switching music, I would load different songs on an SD card. One thing I discovered is that my converted music usually ended up with the track number at the beginning of the file name. I learned to go in and delete that so I wouldn’t waste precious display space with numbers. When I delete that, I can usually get enough of the title listed to figure out what I’m listening to."

不仅是存储空间有限, 而且WAV相比mp3甚至FLAC都超占空间. 结果就是要花挺多时间来选择想听的歌并转换再传到卡上. 他发现自己更倾向于听整张专辑而不是按风格或其它特征挑着听. "Not only are you limited in storage space, but .WAV files take a ton of room compared to MP3 or even FLAC. The result of this is that you end up spending a bit more time choosing what you want to listen to and transferring it to the SD cards. I found myself listening to a lot more complete albums rather than skipping around by genre or some other attribute."

关于听感:
我从最容易的部分开始评测, 即把QA350作为一个一体化播放器. 然后试听了不同风格的曲目换用了不同的耳机. 结果对所听到的表示惊喜. 我注意到的第一件事就是它听起来有多柔顺. 我用了舒耳的SE350, 相比起来我更喜欢这个塞子, 之前常常不能听SE350太长时间, 因为到后面它让我的耳朵很疲劳. 而这并没有发生在QA350这个小盒子上; 我听了一个小时并仍很来劲. 我还注意到在同样大小的音量下它似乎比Sansa Fuze更有力. 我喜欢Fuze, 但我常常(需要)把音量调得特别大以试图换取更多的量感, 但代价是在顶峰会略发出咝音和中高频的颗粒感. 而QA350都避免了这些, 它是如此的平滑以至于我比原本听到了更多的柔顺. "I figured I would start with the easiest part of the review, which was to use the QA-350 as an all in one unit. I’d load it with music, plug in some headphones, and see what it could do. I was pleasantly surprised with what I heard. The first thing I noticed is how smooth it sounds. I was using the Shure SE530 which I like a lot, but often can’t listen to for very long because they give me ear fatigue. That was not happening with this little silver box; I was an hour into it and still jamming away. I also noticed that it seemed to be more punchy and powerful sounding than the Sansa Fuze, even when played at similar volume levels. I love the Fuze but often I find myself cranking the volume very high to try and extract a bit more body or weight to the music. Eventually I get what I want but it comes at the expense of some sibilance on the top end and a bit of grain in the upper mids. The QA-350 avoids that and is so smooth that I generally listen a bit quieter than usual."

QA350能轻易推起我所有的IEM, 而且没有任何底噪, 包括最敏感的LiveWires. 它是我目前底噪最小的放大器之一, 同时很强劲. 它能毫无大碍地推动我绝大多数的耳机(入耳,耳塞和头戴). 森海的HD800量感十足, 但却丢失了一些细节, 并且在较低的音区有点薄(说明QA350上头戴还是要二房的). 连非常难推的600欧AKG K240DF听起来都很棒, 仅比我所喜欢的那种音感小上一点点, 90%的时候都挺适合的. "The QA-350 is able to easily power all of my IEMs. What’s more, it does so with zero background noise or hiss. It even powers the ultra sensitive LiveWires with virtually no hiss at all. It is among the quietest amps I own, yet is still fairly powerful. I was able to power most of my full sized headphones without much trouble. The Sennheiser HD800 had plenty of volume but was missing a bit of refinement and seemed a tad lean in the lower registers. The very difficult 600ohm AKG K240DF actually sounded very good but topped out just short of the full volume that I would like. It was suitable 90% of the time though."

ew9612

project86先对350烧了100多小时, 没有发现异常的噪声."I burned in the unit for at least 100 hours, to make sure it was working properly. I didn’t notice any change in the sound, as I usually never do."

由于350比较小, 他先用350作独立系统搭配测试这些东西(这家伙好东西不少): LiveWires Trips, 怪兽的Turbine Pro Copper, 舒尔的SE530, 音特美的UE-Hybrid塞子, AKG的K702和K240DF, 老森的HD800. 然后作为播放器/DAC试了Matrix M-Stage(仿莱曼纯甲类,Matrix算比较有名的), Fournier HTA-1(富尼耶一款管耳机放大器), Vivid Technologies出的V1(VividTechnologies是02年11月建立的印度公司)和黑嗓的337SE.最后把350当转盘与Theta Miles,三星BDP-1200,先锋Elite DV-37和Lexicon(莱斯康) RT-20作比较.
"I used the QA-350 with a lot of different gear. It is easy to switch in and out of a system because it is so small. I tried it as a complete stand alone system, powering LiveWires Trips, Monster Turbine Pro Copper, Shure SE530, Ultimate Ears UE-Hybrid, AKG K702 and K240DF, and Sennheiser HD800. I used it as a player and DAC along with the Matrix M-Stage, Fournier HTA-1, Vivid Technologies V1, and DarkVoice 337SE. I used it as a transport feeding a Sigtone Shek D1 NOS DAC, a Musical Fidelity X-DAC v3 with X-PSU, and a Yulong D100 DAC. I compared it to a few of disc based transports including a Theta Miles, a Samsung BDP-1200, a Pioneer Elite DV-37, and a Lexicon RT-20. I also compared it to the Sansa Fuze as just a DAP, using no other components."

ew9612

他说350虽然小但算重的那类, 因为他没法把一个300g的东西绑在锻炼表带上, 而创新ZVM约160克, 第一代的大号iPod是185克. 所以350的便携只能说是便于搬运而不是携带(其实他可以放包里..) "The entire unit is small enough to legitimately be called portable, although I certainly wouldn’t want to strap it to my arm for a workout. The main issue is not just size but weight; all that metal starts to add up. The weight is listed as .3kg, which converts to 300 grams. For some perspective, the Sansa Fuze weighs in at around 60 grams, first generation iPod Touch is 120 grams, the classic Creative ZVM was around 160 grams, and the big first gen iPod was 185 grams. The QA-350 should never be called light weight. Perhaps transportable is a better term than portable."

下面这段是关于电池的:"Battery life is sure to be another sticky point with some people. QLS rates it at 6 hours, and that is pretty much dead accurate with my testing. I was able to go as high as 7.5 hours on one occasion, but usually lost power before the 7 hour mark. It takes about 2 hours to fully recharge, and charging uses a separate power supply, which is also included. Thankfully you are not required to remove the battery to charge it; there is a separate plug for the charging cable which is distinct from the regular DC power supply slot. If you plug both in at the same time you can simultaneously listen off the PSU and charge the internal battery." 总有一些人会在电池的问题上挑刺, QLS官方声称350能播放6小时, 与他测试的如初一致, 有时峰值为7.5小时, 但基本在7小时后会提示Low Power. 完全充满电池约需2小时, 幸运的是无需取出电池即可用独立电源对电池冲电(简直是废话 谁见过要取出电池充电的播放器..), 机身有一个直流供电口和单独的充电插口. 如果两个都接上就可以边听边充电.

ew9612

引用第42楼qls_clark于2010-06-09 02:40 PM发表的 :
某国外资深烧友对QA350的评论，英语好的朋友可以帮忙翻译一下。
http://www.head-fi.org/forum/thr ... tility#post_6699204

在design里有提到, project86曾联系了QLS电子部的Clark Chen, Chen告诉他qa350用的DAC是欧胜WM8740, 耳机放大器采用了Maxim的集成MAX9722A, project86说自己没听过这种芯片(废话!). 然后也没有拆过D50无从比较.
原文如下:
"I’ve been in contact with Clark Chen from QLS Electronics to discuss the design of this unit. He says the QA-350 builds on the QA-550 by using a better PCB layout and power supply circuit. The QA-350 has a built in DAC featuring the Wolfson WM8740, and the headphone amp uses a MAX9722A from Maxim Integrated. I had never heard of this chip before."
"I’ll have to take his word for it as I have not heard the D50 myself."

然后他之所以买来试用, 是因为350只要200美元左右, 而D50要500美元, 他觉得作为便携播放器这个价位太贵了(我被雷到了). project86还吐槽350的屏幕太小, 以至于他自己都没法一下分辨是哪一首(我也这么觉得 建议换一块同面积点距小的屏幕会更好). 他很欣赏这种无机械结构带SD卡的设计, 使得音质较有保障, 接近的产品也只有HiFiMan(他到底都看过些什么..).
原文如下:
"The QA-350 operates from a wall wart type power supply, and also has a rechargeable battery. It has a very small LCD display on top which can give you a tiny bit of info about what you are listening to. I say a tiny bit because it is limited in space so you only get the first few digits of the track title. Thus “Symphony No. 5 in D minor, Op. 47: Allegro Non Troppo” gets truncated to “Sympho1” or something like that. This makes it tough to know what you are listening to. On the upside, since you don’t have thousands of tracks available, it becomes relatively easy to remember what you put on your SD card."
"The price is still very good at around $200 shipped. I decided I would give it a try. I realize that I discounted the HiFiMan unit because I didn’t need the extra DAC/amp, but really I just didn’t want to pay so much for them. I don’t mind having them on the QA-350 since the price is so low. Ultimately I would still have preferred a larger unit with a better display, but the price was right, and the portability of the QLS is starting to grow on me."
"The general claim to fame is that the unit can produce an extremely high quality low jitter output to be sent to your external DAC, or you can use the high quality built in DAC and amp. It has no moving parts and is immune to vibration, which is often blamed for all sorts of sound quality issues. We’ll see how it lives up to those claims.
"

ew9612

引用第50楼沦为神于2010-06-15 07:51 PM发表的 :
IPOD就能播放WAVE啊....改MOD后音质也不错，何必多此一举?

虽然我没听过350, 但肯定不是IPOD能比的, 拿mod后的东西和原物比没有可比性, 没有人会从这个角度去买东西, 而且功能还不一样.

wojiaoaibai

请pm下qa350版的升级价钱

163zhengping

昨天买了QLS QA350，效果让人惊喜，非常不错！