Bdeanrembo,
Before make any drastic changes, I'm very sure the MC240 is cable of driving B&W 805s with ease. There could be issue with your preamp too.
What caps were replaced on the amp?
Before make any drastic changes, I'm very sure the MC240 is cable of driving B&W 805s with ease. There could be issue with your preamp too.
What caps were replaced on the amp?