And, the Ref 110 replaced what? Are the cables the same, have you tried anything different? Does it sit on the same rack or stand? Have you tried different equipment supports/isolators?
I have two VAC amps that I swap back and forth and for each to sound its best requires subtle system changes. One of the bass traps needs to be moved 1 inch back, speaker cables slightly damped (via sandbags), DAC feet change from brass spikes to Still points. You most likely need to make some minor changes. You cannot simply exchange one amp for another and expect it to perform its best. I don't believe in long break-ins (over 100hrs). So, if it sounds bad, it probably really is bad, so give it some help.
I have two VAC amps that I swap back and forth and for each to sound its best requires subtle system changes. One of the bass traps needs to be moved 1 inch back, speaker cables slightly damped (via sandbags), DAC feet change from brass spikes to Still points. You most likely need to make some minor changes. You cannot simply exchange one amp for another and expect it to perform its best. I don't believe in long break-ins (over 100hrs). So, if it sounds bad, it probably really is bad, so give it some help.