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Audio-Gd Master 7 - Discrete Fully Balanced DAC (PCM1704)

Discussion in 'High-end Audio Forum' started by darknightdk, Sep 3, 2012.
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  1. DACLadder
    Not that I know of at this time. But that would be really interesting and the best DAC model for comparison purposes. The two may share upgraded analog output line driver circuits. Plus power supplies, chassis, display, I/Os look identical.

    I do have both the Singularity 7 and upgraded DSP Master 7 that are identically configured including Amanero USB, etc. The S7 highs are crisp and clean where M7S highs warmer with a hint vagueness in close comparison. Both S7 and M7S retain their dynamic sound which I think is a major strength of the Master 7 series DACs. The R2R 7 may be a different animal all together.

    I know more owners of the R2R 7 than Singularity 7s. The S7s are rare as the R2R 7 was released only 6 mo. later. So send me your R2R 7!!
     
    Last edited: Feb 2, 2018
  2. davveswe
    What about this then?

    Since 15th May, the Master 7 Singularity had update the firmware to include the NOS 7 firmware in one unit.

    Users can select the unit working as NOS 7 model or original Master 7 Singularity model .
     
  3. DACLadder
    That is correct adding a jumper across terminal S2 puts the Singularity DSP in NOS mode. Default S2 = Off is OS mode.

    The jumper setting mechanics are explained in the user manual. What they actually do and affects on sound are being debated in the R2R 7 thread.
    http://audio-gd.com/Master/Singularity 7/Singularity 7EN_Use.htm
     
  4. DACLadder
    Appears Audio GD will end support of the Singularity digital board upgrade for the Master 7 on Feb 16, 2018. So assume no more sales after that date.
     
    Last edited: Feb 6, 2018
  5. wmedrz
    It is sad to hear this.

    I think Kingwa moving in good business model direction with board sales and custom option.

    If you can already custom order input you like and other option.

    Other retailers follow similar with custom inputs and small modifications. A drastic auditory and physical change such as the entire board, I have not seen.

    There is a lot of room for things to go wrong, a lot of time devoted to customer support, but also there is much interest. Customer also help one another. Many retailer will have forum or thread on website where owners can discuss and help. It becomes a community organically.

    I believe good step for Audio gd and really like what I see in the past half year with firmware update and board upgrade, it is moving more in custom option - more diversity in product and personal preference.

    Of course many companies with this as base model have fail. Audi gd is settled.

    I hope there will be other opportunities from Audi gd!
     
  6. FredA
    Will the upgrade still be available from MagnaHiFi, or not anymore?
     
  7. xrobbo
    Unfortunately not, they told me yesterday that for them too the deadline for ordering the upgrade is Feb. 16th.
    This was the reason why I asked what the wisdom was about improving from NOS7 to Singularity, given also the rather expensive cost of the upgrade (at least 500 euros shipping of the unit included). Other comments on this question still welcome, as I haven't taken a decision yet.
     
  8. DACLadder
    Good question and I am not sure. Kingwa most likely spends a lot of time supporting these upgrades for individuals. He burned hours Emailing me back info during my upgrade attempts last summer. Upgrade sales have probably slowed down and Kingwa just set a date and moving on when it felt comfortable.

    Would assume a company such as MagnaHiFi has prior knowledge and stocked several boards for their customer needs with more on order before the deadline. Plus they have a lot of buying leverage/ experience and could mostly likely obtain a spare part any time if available.
     
  9. DACLadder
    I have finally come full circle on transition from speakers to headphones. The Hifiman HE1000 v2 phones driven off the speaker taps of a McIntosh MHA100 headphone amp is quite the experience for the good. And the Singularity 7 DAC dynamic nature is very balanced and compliments the cans and amp. Strong, nimble bass, excellent vocals, and smooth, extended highs. Lots of low-level detail, great soundstage, and black background. Warm yet detailed sound. Not so great recordings sound OK.

    Just want to say after a year with the Singularity 7 DAC I do not feel the need to upgrade my DAC. It is a great DAC and would like to hear it up against the R2R 7. You can still order the Singularity 7 DAC and may be Audio GD's understated sleeper. And a final plug for Master 7 digital board upgrade. Best tweak ever for the Master 7 and will get you >90% performance of the S7.
     
    Last edited: Feb 11, 2018
  10. xrobbo
    Hi everybody,
    I wanted an update on the state of digital interfaces with audio gd M7 dacs. I left the discussion about a year ago, when many people spoke very well of devices such as the Singxer SU-1, but also audio-gd DI-U8, then disconinued. For a time I was very happy with the M8, then for some reasons I sold it and now I'm reconsidering buying another, maybe a better one.
    Anyone with experience with these interfaces can recommend something? My M7 unit as both rj45 and HDMI digital inputs.
    thanks
     
    Last edited: Feb 20, 2018
  11. seaice
    My personal recommendation: Singxer SU-1 (Magna Hifi Edition) plus Audioquest Mocha HDMI cable (1m limited edition of AudioQuest Coffee). All of these upgrades have been very beneficial in my setup.
     
  12. motberg
    +1 for the SU-1 and also agree that the power supply needs improvement for best performance...
    if you already have a good 5V supply (like the Uptone LPS-1) or can DIY something .. this adapter should give a nice appearance and allow you to adjust the PS sound to your preferences (ie. battery, supercaps, LPS w/wo LT3045 regulation.. etc..),
    https://www.ghentaudio.com/part/dc99.html
    or this
    https://kitsunehifi.com/product/singxer-su-1-dc-power-conversion-kit-kitsunehifi-2-1mmx5-5mm/

    for the HDMI cable, I am using a 0.3m old version Wireworld, these work fine and probably much cheaper than most current model higher quality HDMI cables.
     
  13. xrobbo
    Thanks, yes I have a spare LPSU I can use for that, and I'm fully aware of the benefits of clean power.
    Did anybody try the Hydra Z with the audio gd? This should be a very good digital interface too, although more expensive.
     
  14. DACLadder
    There was one very notable issue with the old Master 7 and compatibility with the Hydra Z HDMI I2S signals. It was document in this thread 2 - 3 years ago. Basically did not work together. Could be different today so get a confirmation before purchasing.
     
  15. DACLadder
    Nice, I just ordered the SU-1 power supply adapter cable and also an external cable. The older (less expensive) WIreworld cables work well for HDMI I2S. The shorter the cable = lower jitter feeding the DAC.
     
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