Hi May be, anyone  tested Х5 with fresh firmware, and with different volume levels  ? I see strange results in article http://personalaudio.ru/detail/ibasso_dx_90/   (on russian, you can translate by Google) http://personalaudio.ru/upload/medialibrary/d8a/d8af18ad6a6b5c95b8140371f2256ad8.png...

What caps ?   I have   mod version. opamp in I/U   or in filter ?   front pair  of opamp  (closer to  pcm1792 chip) - I/U  or filter ?   Quote:  

Receive SMK-III mod. Good case, carefully assembled. Overally good ( but slightly... ragged), smooth sound with my Beyerdymamic 990. Articulated bass, good rock sound (without specififc treble problems as for some CirrusLogic dac's , for example). Not so good with Sennheiser px100...

What is correct ?  8=-) " USB signal, received by tenor 7022, go to spdif chip 9001"  or  "directly to pcm1792" ?   Can you send to me scheme of SMK-III  ?   (at Monday  I 'll   receive it. )   Quote:  

     USB signal, received by tenor 7022,  go to spdif chip 9001  or  directly to pcm1792  ?   Quote:  

  Can I change mode of digital filter of pcm1792a in  SMK-III  mod  (sharp <->  slow ) ?

    my opinion is - after any no-fold (eg, 44.1 - 96) re-discretization sound quality is down.     These DAC's  contain 8x (sync, fold)   digital filter, that already multiply frequency at 8x.   Yes,  digital volume control - way to degrade the resolution on lowest and middle levels.  ...

   I can't compare these DAC's  on practice test,  but    "matrix mini i" has some disadvantages - re-discretization of input signals (upsampling),  non-replacable OpAmps  (op275 / opa2134),  digital volume control  in ad1955.     Quote:  

    I requested  adapters  on Ebay,   2dip --> 1dip  (for  opa627 in DIP cases),  soic --> dip,  2 soic --> 1dip   from http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=350414359241

   USB signal, received by tenor 7022,  go directly to pcm1792  or to spdif chip 9001 ?

  I have some opa627,  soic &  dip,  where I can buy  these little PCB  for it ?

>>  We tried OPA2132 / OPA2604 / OPA627(signal to double transform) , the sound is better than OP275, J   But OPA627 - single  OpAmp How I can use 627 ?

someone try to install Opa2132   in SMK-III  ? What you can say about sound with it ? ------------------  I 'll try   opa2132, when I receive SMK-III  .  8-)   

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