Hey! My tech said that bias might have "escaped" in my M-2000. Does anybody know what is the correct bias setting for M-2000 amp? The hi-gain (tube) mode on my amp is really quiet compared to the normal tube mode. When I switch from tube mode to hi-gain the volume drops for like 20dB I would say (so I can't use hi-gain mode). What could be the reason for this? When I turn the power on this M-2000 on, the volume goes up slowly and it needs some time to get to the full power. Why so? Is this normal? Thank you so much for all the answers!!! I really appreciate it! I'll have some more questions about M-2000. I hope someone is still using this nice amp.