Hi Crion,
Greetings to you.

An interesting hypothesis.

I have also not yet quite settled on a config with the latest Trifield. I was previously using a fixed version of Trifield in the v6 but with +3dB. I had reached a seamless presentation.

Where I perhaps differ is that I haven't critiqued the Sq and found smoothed results as you noted. Maybe the 8k firmware makes it harder to pinpoint where the differences come from. The highs in Trifield are more smoothed than direct but I had put that down to -3dB in Trifield compared to direct.

I guess you make a bold assumption that all c-codes are interchangeable. We know that M constructs it in a modular fashion so it could be the case.

Did you just select the specific c-codes for upload? Any messages when you did so?

I may get some time to play over the Xmas break.

Rgds,
Nick