hmmm, I would say around 47-50 db, it will be in Class A operation.(also depends on source, cd, xrcd, Sacd, voltage of the cd player, recording.....) X250.5 will give first 35 watts in Class A mode. This is for sure, than, if you raise volume (-55 db ) it will switch to AB when it needs realy a bass slamm. If the meter of X250.5 starts shaking time to time, it means bias is not fixed, amplifier needs to switched to AB.
X600.5 will sound better with more demanding speakers from Wilson range, but not with sophias. Building a Hi-End setup is tricky thing:In this case, If I could find substantialy better amplifier, I would have bought it. (cost is no object , even my speaker cable is expensive as my Pass Amplifier)
I hope this helps.
X600.5 will sound better with more demanding speakers from Wilson range, but not with sophias. Building a Hi-End setup is tricky thing:In this case, If I could find substantialy better amplifier, I would have bought it. (cost is no object , even my speaker cable is expensive as my Pass Amplifier)
I hope this helps.