Hi @ja_kub_sz , I can only speak about how my Tambaqui interacts with my Audionet Stern (and formerly Audionet Pre G2). The 6v output sounds better than the 2v output on the Tambaqui. At 6v I only got the clipping on some recordings, but was super annoying. So by setting Volume offset to -2, for me, it fixes everything and I can still run 6v output. Remember to use Volume Offset, not Volume, as the digital voilume on the Tambaqui casues bit strippiing or loss of resolution. Again I run fixed volume output (now adjusted by the volume offset) and control volume on the preamp. I would think we want to run the highest output from the DAC that works in our system. The variable output on the T+A is interesting.
I do not know how to equate the amount of Volume Offset you need to run at 6v and eliminate the clipping. Please experiment and get back to us!