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Massdrop x Airist Audio R-2R DAC: A Discrete Resistor Ladder DAC For $350

Discussion in 'Dedicated Source Components' started by jude, Jun 4, 2018.
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  1. Sapientiam
    That figure of -140dB is not a noise spec, its read off an FFT. When reading from an FFT you do need to take account of the bin bandwidth which is much, much narrower than the full audio bandwidth.
     
  2. i20bot
    Hey Sosolar, you should put the balanced version in a very similar form factor as the RDAC. Well not the same height but the height of their amps.
     
    Inorbit8 likes this.
  3. jermo
    Yep, build the balanced version (native DSD, MQA, dual balanced outs and an LPSU option, please!) into a virtually identical design to this and put the shoe on the other foot - instantly take a substantial built-in audience of CTH/LCX/AAA owners who will be happy to buy your product, and cut MD out of the loop as payback for Airist's contractor pinching your design. @sosolar
     
    Inorbit8 likes this.
  4. Sapientiam
    Should that be plain vanilla DSD64 or DSD512 or next year's new marvel, DSD4k?:smile_phones:
     
  5. Th3Drizzl3
    im def down for a balanced version if you release it sosolar.
     
  6. wushuliu
    Yeah, they were innocent until we saw the evidence and testimony from the victim. Hell, even the reply on the massdrop thread by WilliamTse is incriminating. He shows five R2R boards with 'similar' designs - except two of them look almost *exactly* the same. But, yeah, let's not draw any conclusions. 'Who ya gonna believe, me or ur lying eyes?'

    Lol. Gotta love audio forums. You see people as they really are.
     
    Last edited: Jun 8, 2018
  7. randytsuch
    So it seems that massdrop is sticking to the story that its not a copy, and WilliamTse is basically now ignoring any post on the subject?

    Was the sales number higher before? Trying to remember lol. Its at 186 now.

    Was also kind of disappointed when I figured out the sosolar dac board sells for 2000 yuan.

    Oh well, guess I'll just see what else unfolds.

    Randy
     
  8. BananaOoyoo
    Shame. I was very interested in joining the RDAC drop when it was announced, but I'm not willing to overlook a complete disregard for ethics (whether it's by Airist, Massdrop, or both) to get a good deal(?) on a dac.
     
  9. gLer
    Well the Audio-Gd R2R-11 is available and shipping and is guaranteed not to be a copy of any previous design as far as I’m aware :wink:

    Seriously though, you get a brilliant true NOS discrete ladder dac with an amp that matches or exceeds the MD stand-alone amps for the same money. And no 6-month wait. If you’re looking for a ladder dac in this price range it’s a no-brainer.
     
  10. Inorbit8
    I guess we forgot Massdrop is a partner on this project. This is their big push to complete their so-called MD stack line of products that use the same chassis design. Of course, they are sticking to their story.
     
  11. SamusAran
    maximus69 likes this.
  12. maximus69
  13. sosolar
    UPDATE:
    I replied a message to Will yesterday talking about my detailed design timeline picture by picture from 2015 until now, my personal preference unnecessary design such as big transistor, buffer opamps, logic switches and the request of their prototype pictures in timeline form.

    Today, Will reply talking irrelevant topic i.e. r2r topology in Chinese forum(glad to know they are still with Airist), and refused my request saying that they dont have any picture to prove they was designing the same as mine.


    He is trying to pasuade me that they have done the same thing in the same form without any proof, denying the fact. However, not every customer will believe your story, but quickly drain your hard-earned reputation.
     
    Inorbit8 likes this.
  14. wushuliu
    I'm sorry that sosolar has to go through this. If Massdrop was sloppy enough to have this happen and still move forward, it doesn't bode well for their other products. If they have six months before delivery then that should be more than enough time to come to an agreement with sosolar or take Soekris up on their offer.
     
    Inorbit8 likes this.
  15. omniweltall
    Thanks for the great review!

    What about Gumby, Torq?

    Much appreciated.
     
    Last edited: Jun 9, 2018
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