Firmware 12.3.0 + DOS 2.2.2

[ogs]

I've had 12.3.0/2.2.2 running for a week now. I decided to leave the betas even if I had a preference for beta14 in my system. The real improvement here turns out to be (Roon) AIR. Wow that sounds good!
I did not try AIR when I switched between beta14 and 12.3.0/2.2.2 in my testing a week ago. So this time I've concentrated on just that. It is easy to switch back and forth between AIR and AES/EBU in Roon, and I still marginally prefer sound via Mutec. But the difference has almost vanished. I am pretty impressed!
As @Confused (and @David A ) says there is better definition in the bass which works for both Mutec and AIR, but midrange and treble is now actually better (more transparent) with AIR than via Mutec. I believe this is due in part to the fact that AES/EBU has more processing of the stream than packet data on the ethernet interface. AIR is also asynchronous. Of course signal path is quite long before it reaches the AES/EBU input. Ethernet to USB in the mR, USB->conversion->re-clocking->AES/EBU in Mutec and cable->Devialet. Sound via Mutec still has better dynamic precision. Notes on acoustic piano, for example, is a little soft with AIR, attacks are better handled via Mutec, but all in all the ethernet input is now the best.

I am quite sure it's possible to improve signal delivery to the AES/EBU input. Today I use a cheap DIY cable here (it is 110 ohms), the Mutec still has the SMPS. And of course I do not have a separate word clock unit...

Another benefit 12.3.0/2.2.2 has is better temperature control of the amplifier. If I forgot to turn on DMP the class A, when idle, could end up with 65 degrees on beta14. Now it stays under 45.
I have used the Devialet app on my Android devices with few problems. I normally use the Devialet remote so I don't really know what to expect from the app.