Update from part two of my tests - the various USB Driver configurations.
As has already been pointed out earlier in thread - the biggest part of SQ improvement comes via a general OS configuration update.
Then there is a USB Driver config change that will yield an incremental improvement on top of the OS configuration change.
Based on my experience - both OS configuration change and the USB Driver config change impact all bit-depths and sample rates and also both streamed and locally stored music
.
For the second part of my test, I used test tracks ranging from 16/44, 24/96, 24/192 and DSD256 - the latter was stored on Extreme the previous all streamed via Qobuz. The buffer sizes and the max # bits/sample affect timing and hence relevant to test with different bitstreams.
In my system (results will be DAC-dependent) these are the results.
View attachment 89200
SQ 1 was a clear best in my system to my ears.
SQ2 and SQ3 are much closer (SQ3 is == to the general OS Configuration mentioned at start of post).
After having spent a 'a few hours' doing these (rather simple) configuration tests I realize the incredible effort that Taiko Team must have spent exploring a gazillion number of test configurations in order to help all of us get best possible SQ. Big KUDOS!
I had some initial problems switching between the different USB Configs but after
@Taiko Audio fixed the error it was easy to conduct the test - it took about 3m to switch between the USB configs and only 10s to switch the Roon setting.
I remain amazed at the SQ improvement from OS config change + USB config change - it is like a new system!
I look forward to the continued collaboration with
@Taiko Audio on the journey toward SQ nirvana...