Dangerous Music Convert-2 Measurements

Discussion in 'Source Measurements' started by purr1n, Apr 30, 2019.

  1. purr1n

    purr1n Finding his inner redneck

    Staff Member Friend BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    50,968
    Dislikes Received:
    84
    Trophy Points:
    113
    Location:
    Antarctica
    Doing a quicky here. Don't have as much time as I used to. All measurements are AES in, 44.1kHz and BAL out.


    Dangerous Music Convert-2 DAC 1kHz 0dbFS
    upload_2019-4-30_19-4-16.png

    This looks really good. Opamps are good. Great AC mains filtering. No spurae. Distortion characteristic is even order.
     
    mscott58, dark_energy, Baten and 8 others like this.
  2. purr1n

    purr1n Finding his inner redneck

    Staff Member Friend BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    50,968
    Dislikes Received:
    84
    Trophy Points:
    113
    Location:
    Antarctica
    -30dbFS
    upload_2019-4-30_19-6-46.png

    -60dbFS (note raised floor on plot)
    upload_2019-4-30_19-8-16.png

    -90dbFS
    upload_2019-4-30_19-9-41.png -

    Good opamp based design.
     
  3. Vtory

    Vtory Illogical Spock

    Friend MZR
    Joined:
    Sep 12, 2016
    Likes Received:
    3,983
    Dislikes Received:
    37
    Trophy Points:
    113
    Location:
    TX
    Damn, this is way more impressive than what I expected.

    I deeply believed that good sounding dacs have dirtier harmonics (sometimes odd-ordered) .. and boring dacs would behave better. So, my "theory" said convert-2 might have some strange patterns in measurements (because it sounded so good). But it's normal.. very normal. Theory disproved.
     
  4. Collusion

    Collusion Friend

    Friend
    Joined:
    Jul 27, 2017
    Likes Received:
    315
    Dislikes Received:
    2
    Trophy Points:
    63
    Location:
    Finland
    Thanks @purr1n !

    Was the volume trim bypassed?
     
  5. purr1n

    purr1n Finding his inner redneck

    Staff Member Friend BWC
    Joined:
    Sep 24, 2015
    Likes Received:
    50,968
    Dislikes Received:
    84
    Trophy Points:
    113
    Location:
    Antarctica
    Yes
     
  6. Psalmanazar

    Psalmanazar Non Voting Friend

    Slaytanic Cliff Clavin
    Joined:
    Sep 27, 2015
    Likes Received:
    3,072
    Dislikes Received:
    103
    Trophy Points:
    113
    Only if you consider AGD, Burl, and Lampizator to be good sounding :D

    Dangerous stuff usually uses the expensive regulated switchers, looks like it has well laid out, uncramped PCBs inside, and uses those thunderous THAT buffers. There’s no reason anything shouldn’t measure clean enough for even order harmonics though if it doesn’t sound like gooey, saturated warm poo.

    Perception of these measurements is what matters, not the measurements themselves as anything that sounds okay should measure okay once you get past bargain basement price range stuff with codec chips and cost reduced power supplies. Even in those, the AD/DA conversion usually has an SNR of about -89 or so (but doesn’t sound too hot) and what really sucks is usually the mic pre.
     
  7. JK47

    JK47 The Beer Houdini

    Friend JK47
    Joined:
    Sep 26, 2015
    Likes Received:
    4,869
    Dislikes Received:
    97
    Trophy Points:
    93
    Location:
    "Surf City USA"
    Did you also try measurements using the trim turned down? I’m curious.

    EDIT: Looks like AtomicBob will have the 411 in his DMC-2 measurement thread.
     
    Last edited: May 1, 2019
    MrTeaRex and Psalmanazar like this.

Share This Page