Most of the people on this forum wouldn’t be able to form an opinion about a piece of gear without knowing the price. Not many take an objective approach or blind test even when they know that they can’t be objective. It’s is what it is folks. The R8 is a fantastic amp, and it’s 25 watts of triode power are better, imo then the 25 watts of class A from Pass. Burn in. Lol, take whatever amount of time you need to convince yourself the more expensive amp is better. If that doesn’t work it’s gotta be the cables. Or maybe it’s the DAC. Another subjective money pit. Just keep throwing money at the issue until you are temporarily satisfied.