" ...But this could be the consequence of to much simplifying circuit design and some poor components I mentioned before..."
Hmmm, have you ever "peeked" inside a Chord DAC, or Calyx 'Femto', Berkeley 'Alpha DAC Series-2 MQA', shown here;
http://www.berkeleyaudiodesign.com/alpha-dac-reference-series-2/
or Bricasti's sensational M-1 SE, MSB? (and several other ultra-primo $10K-$20K US$ examples I've missed), or even the highly regarded (and reasonably priced) Mytek 'Brooklyn +'' ($2,200. US$) ?
In all cases, a look inside (virtually all mentioned) will reveal a startingly 'bare' interior composition !
Coincidence?
Nothing to it/no reason for it ?
Sooo, when I hear/read: " ...
simplifying circuit design and some poor components .... YOU
mentioned before" , I must take exception to a clearly naive understanding of what constitutes premium design/sound.
Additionally, Peteg is gracious enough to share his immediate -and continuing- SQ observations that we should be grateful for (these insights).
At the 100-hour mark, I suspect he might be 50% on the way to a 200-300 hour requirement (I'm guessing).
I'll also venture to say that the X-22 will be considerably superior to the (already impressive) X-20PRO, once fully settled.
pj