睿志音响

	心睿 · 志远

Master 7(2016)
Release at 12th. Oct. 2016
全分立平衡DAC

装备最新软件设计DSP V7的数据处理器
8片PCM1704UK顶级芯片
支持384KHZ @ USB & IIS
32bit / 384K 异步传输Amanero Combo384
使用OCC 线及TCXO

售价： RMB 14800
（含国内顺丰运费及运输保险）

概述

使用指引

规格

技术细节

定制选项

点击查看 Amanero combo 384

Audio-gd 的产品均基于 AP SYS-2722 （最顶级的专业音频测试仪）进行设计及测试保证所有参数附合规格页面所标示。

Feedbacks:
http://www.head-fi.org/products/audio-gd-master-7/reviews/8087
http://www.head-fi.org/t/625793/audio-gd-master-7-discrete-fully-balanced-dac-pcm1704
http://bbs.audio-gd.com/dispbbs.asp?boardid=2&Id=27207 （中文）
如果阁下的Master 7是2016年10月12日前发出，点击查看阁下的产品信息： The older Master 7

Master 7(2016) 使用的全新软件设计:
          Master 7自2012年7月始发售，至今已超过50个月，对于数码产品来说这是一个很长的时候，很多厂家都会每年更新一次产品。但 Master 7的严谨设计依然无懈可击，没有可以升级的切入点。唯有 Master 7使用的数字处理器软件只支持到192K，在384K当道的今天，不能说不是一个遗憾。
          早在2015年，何先生就开始联系具有软件开发能力的工程师，希望对软件进行升级，联系了不下数十个工程师，只有两个认为可以胜任这个工作，但索价高达3万美元，及由于他们并非音响行业人士，对于音质是否能提升，并不能提供保证，只保证功能符合要求。
          为此何先生感到非常失望，并决定自行开发这个数字处理软件。经过一年多的学习与调试，耗费很多节假日及无数个晚上工作到两三点，终于完成了新的软件设计，比旧软件性能，稳定性，动态范围等各方面都有明显提升。
          在性能上，首先新软件支持到384K的采样率，由于PCM1704的采样率输入只支持到1536K，因此当384K与352K输入时，会自动切换到4倍过采样状态工作。这与ES9018的工作方式相似，ES9018也只支持到1536K输入，并在超过96K后就开始降低过采样率。
          何先生花费大量时间对于时序的严谨设计与优化，令机器完全工作于无jitter的状态下，表现为动态范围，信噪比等指标得到提高。
          严谨的设计还令软件工作极端稳定，当用户切换不同过采样率时，不象旧软件由于信号源的jitter影响而出现声音不平衡的现象。
          在音质上，时序的严谨设计令声音更中性，音场定位更精准，动态范围的提升令用户可以听到更多的细节，更强的冲击力及更有重量感的声音。
          即使是喜欢柔和厚暖音色的用户，也会提到受益。通过自行设置不同的工作模式，如8倍，4倍，2倍甚至是NOS模式，令声音变得厚暖柔和。
          全新的NOS模式设计，声音比旧有软件更柔和耐听而又细节丰富。
          Master 7(2016) 使用PCM1704芯片的终极设计。
          全新设计软件及硬件的DSP芯片直接安装于主板上以达到最佳的信号与数据传输，更快更稳定地处理时钟，令Master 7(2016)
细节透明度及动态完全飞跃于 audio-gd 其他任何DAC 产品，即使是受到不少外国资深爱好者评论的NFB-7 （使用ES9018重量级设计），也不及Master 7(2016)
所具备的透明度与动态。但这不代表Master 7(2016)是着重动态与速度的产品，即使是声音的厚度与重量感也是超过我们过往所有的DAC产品。
           Master 7(2016) 允许用户审定普通水平录音中的缺点，及颀赏大师级制作的录音如何美妙，前提条件就是要有一台中性高解析力的放大器系统（包括音箱或耳机）。
           Master 7(2016) 是完全无妥协的产品，没有可以进行升级的器件需要，使用全部音频级器件，OCC连接线及TCXO 等。
           Master 7(2016) 使用全新的设计概念，SPDIF输入应用独立的解调器处理数据，可以针对不同输入而进行最佳的参数设计。
           IN1 : BNC 输入，最高支持 24bit / 96KHz。
           IN2: AES 输入，24bit / 192KHz。
           IN3, RCA 同轴输入，24bit / 192KHz。
           IN4, 光纤输入，24bit / 192KHz。
           IN5 , I2S 输入，最高支持 32bit / 384KHz。（注）
           IN6 , USB 输入，最高支持 32bit / 384KHz。（注）
（注：使用USB32的设备无论是通过USB或IIS都只支持到352K。而这个台湾公司由于技术人员变动迅速已无法提供修改。
          通过IIS输入，如果连接线较长可品质不佳可能导致时钟信号损失严重而不能支持到384K，在我们的测试中是完全没有问题。）
全晶体管无反馈CAST输出电路，信号通道没有使用运放IC进行放大及没有使用耦合电容。
R牛供电
使用21组稳压电源设计，其中19组组成双重并联甲类稳压电源供电，超过50，000UF audio滤波电容
大量使用发烧级器件
　

Feedback from users :

19th Sep , An user from New Zealand:

I am very impressed with the Master 7. Well done! It is definitely a big step up from the Reference 7.1 and NFB-7.1. That Via USB chip is great and deserves to be used in a master series Digital interface with built in I2S output. I can see that any flaw any where else in the system would be very obvious. I have heard some mixing errors I had never noticed.
The Master 7 is a significant upgrade on the Reference 7.1 which was already an amazing performing DAC. The improvements in resolution and imaging are well beyond the increase in price and the built in USB32 input out performs even my Audiophilleo 1 with external power. I can think of no DAC at up to twice the price of the Master 7 that competes with it for performance.”
　

5th Oct , Dmitry from Russia:

My Audio-gd way was from FUN through DAC19 through RE5.2 to M7 and each next device was much more better than previous.
But M7 now is the BEST what I hear from Audio-gd gears. The soundstage is more detailed andholographic but not oversharped, vocal voice is fantastic natural, the scene is deep.

30th Nov , Adrian from Brazil:

This is to let you know I've received the Master-7 and it's a great sounding dac! Very neutral and full sounding. Before this I had NFB-2 and Master-5. In comparison with Master-5 wich is a PCM1704UK dac also, the Master-7 have a similar signature, but the sound is more emotive, powerfull and I can listen at lower volumes and hear all the details. All I can say that Master-7 paired via ACSS with Master-10 integrated amp is the best sound I've heard. Thank you and please do keep making great equipment!
　

27th Dec , Kim from Korea:

         I listen speaker system
         My system is dynaudio 25th special + master10 amp + maste7 usb dac
         And i use siltech cable.

        This sound is very good and fantastic.
        Dynaudio's esotar 2 tweeter sound very sweet and master7 give more clarity and master10 amp give power.

        Especially, i surprised master7 usb .
        Very very different re7.1 and master7 .
        I think master7 have not 1or 2 upgrade.
        Master7 have much more upgrade.

        After i listen master7, i listen my friend's re7.1 .
        I feel that My friend re7.1 sound have less clarity and sound information .
        Master7's sound information is a lot .
        So sometimes i feel that this sound very much to me .

         Anyway i am happy when i listen music
　

17th Jan. , An user from Japan:

Some initial results of my experiments:

              I used the M7 and Calyx DAC (which uses 1 ES9018 in multi-channel dual-differential mode with NE5532 output opamps and is USB powered).

              Audiophilleo 1 to each DAC: M7 (input 3) sounds more "real". Calyx sounds a little less natural.
              DIV3 to each DAC: M7 (input 1 from DI coax out) sounds the same as the Calyx (from DI RCA out). The sound is very good.
              Direct USB input to each DAC: M7 sounds MUCH better than the Calyx USB input, which uses an XMOS chip. The Calyx sounds less detailed and boring and unnatural.

Best sound (all about equal):
              M7 USB32,
              DI V3 to either DAC,
              Audiophilleo to M7.

　

13th May. , McIntosh from USA:

My friend Don McIntosh wanted me to relay this message to you and I quote "Congratulations on the monoblocks and stereo amp, they are SENSATIONAL! The chain of Audio-gd gear in my system never sounded so great through my McIntosh XRT2K speakers! Keep up the good work. Your friend (signed) Don McIntosh."

Combo: Master 7 + Master 1 + Master 2
　

Fred from Canada:

           I thought I had heard all the music there was to here in the numerous recordings I owned. But then I received the Audio-gd Master 7.

           There is a saying about great sources as to they are not forgiving with bad recordings. I now have a saying: before judging of a recording, listen to it through a transparent and NEUTRAL source, with the proper gear to complete the setup, and then surprise! The bad recording often becomes not so bad at all and most of the times, very enjoyable.

           Not only do some formerly rejected recordings now become enjoyable, the best ones become like the real thing. It makes you want to sit back, relax and listen to a fabulous, free private never ending concert. A concert in which you can choose to hear any artist you love or even discover new ones, as they are suddenly revealed.

            Forget all the usual bullshit about bass extension, highs sweetness, resolution, imaging, dynamics and all that (because you get it ALL), and this cliché of mine, and enjoy the music. Enjoy it so much that it makes you feel the Master 7 might be the best deal ever.

             All that said, I am giving my impressions through the Acss output using a wire I built myself for 40$ and through the built-in USB input, not even feeling the need for using my 1000+ Audiophilleo with Pure Power. As mentioned, great bargain. I wonder what it will be after proper break-in (within a few hours, it was like i describe). Just a note for the eventual buyer, use a big power cord. As for me, I use the Acoustic Zen Tsunami. Note also that all my setup was matched to the Audio-gd nfb-8 DAC and therefore, having the same house sound (but clearly inferior), I had no tweaking to do to obtain those splendid results.

            Thanks you Kingwa for this amazing DAC. You've made my year. I know my comments sound like advertising and in a way, it is. I felt like doing it to thank you and share my true enthusiasm with all those wondering about this great piece of hardware. It plays musics like nothing else I have heard. It's just fantastic. As many mentioned, it just plays the recording with great fidelity and that is all your need with the right setup.
　

Fred from Canada:

My master -7 has now 450 hours of running time. I activated the integer mode on pure music as mentioned to you and it makes a remarkable diffrence with my setup. This dac has the most analog sound i have heard in my life, as well as the best soundstage and resolution. It is getting more punchy as well. This is near perfection. Probably the last one I buy. It is an excellent match to my hypex ucd400hg hxr home made amp (passive pre using dale resistor balanced relay attenuator, Audyn true copper signal caps, some high end wiring and a couple of connex 500w switching supplies).
　