SBAF DAC Talk II

Discussion in 'Digital: DACs, USB converters, decrapifiers' started by Maxx134, Jul 22, 2018.

  1. SoupRKnowva

    SoupRKnowva Official SBAF South Korean Ambassador

    Pyrate Contributor
    Joined:
    Sep 26, 2015
    Likes Received:
    4,316
    Trophy Points:
    93
    Location:
    Austin, TX
    I think those would be separate but related issues. There wouldn’t be anything stopping you from using the filter with a DS Dac, at least if you’re using a chip that allows you to bypass the onboard oversampling. The question would be in whether or not there would be any benefit to it based on the reasoning you outlined
     
  2. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    89,962
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    There is no reason it wouldn't work to a very large extent. I don't totally buy the approximation thing - it's so close.

    The thing is that DS DACs implement their own filters on the chip, tightly integrated with their D to A approach (which is usually a hybrid DS, not one bit). The translation or the algorithm of Schiit's approach happens to be written for multi-bit data in and out. There's no reason why it couldn't take multi-bit in and spit out something else for optimal for S-D D-A chips.

    I believe a few companies have written custom filters for the latest AKM DACs. They do odd stuff like upsample PCM to 211kHz, which I bet has some mathematical relation (happens to be more optimal) to the internal processes of the D-A conversion chip.
     
  3. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    89,962
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    I posted this in another thread. Try downloading Resampler V for foobar.

    R5.png

    This did wonders for the soundstage of the OG Gungnir DS by using a custom filter / resampling to 176/192. Is it mathematically optimal for the chip? Probably not, but the difference can certainly be heard.
     
  4. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    89,962
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    Modi 3. I believe this actually measured well. Schiit providing the AP-555 measurements kind of forced Amir to be more careful and not bork the measurements on this one. (I actually borked my first Modi 3 measurement by using a cheap AC to USB adapter not included with the Modi. I didn't think it would make a difference but it did).

    How used is your Bifrost? I believe there were running changes along the lines of "Analog 2" but no idea when the switch was. We will never know because of the spoiled brats who evidently caused Schiit to put a hold on upgrades, at least for now.
     
  5. Senorx12562

    Senorx12562 Case of the mondays

    Pyrate
    Joined:
    Oct 26, 2015
    Likes Received:
    3,276
    Trophy Points:
    113
    Location:
    Bird-watcher's paradise
    I think Audio Alchemy did exactly this in their dac/pre. 211 is a prime number, so...shrugs.

    Edit: After some research, AA's pre upsamples to 216khz, which makes more sense mathematically, but the principle is the same.
     
    Last edited: Dec 28, 2018
  6. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    89,962
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    Agreed, I'll make a thread or site dedicated to Amir so we can throw all Amir related topics in there.
     
  7. Psalmanazar

    Psalmanazar Most improved member; A+

    Pyrate Slaytanic Cliff Clavin
    Joined:
    Sep 27, 2015
    Likes Received:
    5,345
    Trophy Points:
    113
    Amir is just another scammer who can’t even hear the obvious coloration of many of these products that is obviously much more important for their real world usage than whatever numbers he pulls out of his ass.

    His pirated Chinese electrical part dacs are going to be worse than Behringer and Steinberg cheapo interfaces.

    The most insane is what Prism does with the CS4398. Some of the Callia and Lyra reviews explain it. The gear is good but Prism found a way to dial in British sound with DSP chips and their weird not quite minimum phase response filter.
    Is it still wimpy?

    The Grace and Schiit boxes try mitigate the wimpiness but in doing just sound bloated and still veiled compared to the shrimpy but neutralish And still veiled RME. Audiofuse and Teac/Tascam were wimpy and veiled too. All of them pretty much were compressed trash to me compared to the Dangerous and good ole Lavry boxes.

    What comes out of R2R dacs are approximations too bro and usually lesser ones than DS. Linearity errors, error correction, oversampling filters, etc. True original signal conversion stuff isn’t buildable in the real world. Think Plato’s allegory of the cave.

    With modern tech, a->d and d->a conversion is still way less lossy than pressing to vinyl, dubbing down tapes. or converting to mp3
     
    • Like Like x 2
    • Epic Epic x 1
    • List
    Last edited: Dec 23, 2018
  8. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    89,962
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    Crane Song Solaris is still wimpy. Too much evidence now it's the new AKM chip and not "implementation" causing this. The AKM4396 and 99 were so much better in this regard.

    It's like instead of a metal mace with spikes on it cracking holes and crushing bones in a skull, someone wrapped a velvet lined sponge around a wooden stick.
     
  9. Psalmanazar

    Psalmanazar Most improved member; A+

    Pyrate Slaytanic Cliff Clavin
    Joined:
    Sep 27, 2015
    Likes Received:
    5,345
    Trophy Points:
    113
    So AKM makes toilet brush DACs?
     
  10. YMO

    YMO Chief Fun Officer

    Pyrate Contributor
    Joined:
    Apr 1, 2018
    Likes Received:
    10,579
    Trophy Points:
    113
    Location:
    Palms Of The Coasts, FL
    But Grace and Schiit are $99 max before shipping. It isn't like they cost $500+.
     
  11. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    89,962
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    Exactly and an acceptable compromise since all sub $500 DACs sound kind of wimpy. TBH, I almost feel the SDAC and Modi 3 are less soft than the Solaris. The headphone out on the Solaris does synergize with the DAC's sound. Still the wimpiness and brightness don't totally go away.

    It's a good DAC for folks who think the Yggdrasil is too incisive and would keel over from a heart attack if they listened to the Convert-2. So there is definitely room for people to like it. And again, the Solaris soundstage is to die for.
     
    Last edited: Dec 23, 2018
  12. MikeW

    MikeW Shitbag

    Banned
    Joined:
    Feb 24, 2017
    Likes Received:
    16
    Trophy Points:
    8
    Location:
    dumbassville
    I have not received the Bifrost yet, as it will ship on Wednesday. But the previous owner told me he purchased it in 2016, and sent it to schiit for Gen5 in mid 2018. I think it's schiit policy to update the firmware of anything that comes though the doors for service, so it should at least have a recent firmware, if that is true. But I don't know the extent of "running changes" does that mean new hardware, or new firmware, or both.

    Modi 3 does look like a fantastic value. My comments about bringing more resolution to lower products, were mostly targeted at Modi Multibit and Bifrost however. But yes, moving forward in value/performance for any of the line is good.
     
  13. Thenewerguy009

    Thenewerguy009 Friend

    Pyrate
    Joined:
    Oct 11, 2015
    Likes Received:
    385
    Trophy Points:
    63
    hmm I never got the Yggdrasil being too incisive at all. I still heard a hint of digital glare with the original Yggdrasil, but anything more of a brighter & incisive sound & it would be like every other overly sharp delta sigma sound I've heard.
     
  14. Psalmanazar

    Psalmanazar Most improved member; A+

    Pyrate Slaytanic Cliff Clavin
    Joined:
    Sep 27, 2015
    Likes Received:
    5,345
    Trophy Points:
    113
    Lowballing a used Dangerous Source or D-Box (no usb, different sound) seems to be the best bang for buck option right now. If you look hard enough, you can get them used for under 500. They're worth their new price though for those who don't want to wait. Headfiers massively overvalue used gear though.

    RME ADI-2 FS (the pro without the dsp chip equalizer and USB) gets the new RME sound for 500 GBP, 650 USD. Good buy for wimps who already have gear that can feed it AES or ADAT.
     
  15. Psalmanazar

    Psalmanazar Most improved member; A+

    Pyrate Slaytanic Cliff Clavin
    Joined:
    Sep 27, 2015
    Likes Received:
    5,345
    Trophy Points:
    113
    Some people only eat solid real food. Other people prefer steel cut oats, instant oatmeal, or god forbid, cream of wheat.
     
  16. Psalmanazar

    Psalmanazar Most improved member; A+

    Pyrate Slaytanic Cliff Clavin
    Joined:
    Sep 27, 2015
    Likes Received:
    5,345
    Trophy Points:
    113
    Also, thank you @purr1n for confirming my worse fears about current AKM chipsets. Very helpful for future gear purchases.

    Now if only used Lavry Black boxes weren’t massively overpriced for decade old used gear... that no frills, no special filter, well done AD1955 on the DA and the saturation feature on the AD sound great.
     
    Last edited: Dec 27, 2018
  17. Senorx12562

    Senorx12562 Case of the mondays

    Pyrate
    Joined:
    Oct 26, 2015
    Likes Received:
    3,276
    Trophy Points:
    113
    Location:
    Bird-watcher's paradise
    And some people can't hear worth a f**k, and some have no teeth.
     
  18. purr1n

    purr1n Desire for betterer is endless.

    Staff Member Pyrate BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    89,962
    Trophy Points:
    113
    Location:
    Padre Island CC TX
    I prefer steel cut oats from the tin can; however, I will pan roast the oats a bit to bring out the nutty flavor, and then churn it a few seconds in the food processor to get a smoother less lumpy consistency. Then finish it off with a capful of bourbon.
     
  19. svperstar

    svperstar Acquaintance

    Joined:
    Nov 20, 2016
    Likes Received:
    49
    Trophy Points:
    28
    Location:
    Canada
  20. Senorx12562

    Senorx12562 Case of the mondays

    Pyrate
    Joined:
    Oct 26, 2015
    Likes Received:
    3,276
    Trophy Points:
    113
    Location:
    Bird-watcher's paradise
    Had me at bourbon.
     

Share This Page