Asking here I got several sets of mono amps, B&K M 200's and Adcom GFA-565's. I have done nothing to the B&K's besides re cap the input boards. the 565's I have put in new Hoppes input boards (https://hoppesbrain.com/product/ebfa-565/). My question is this. On mono amps like these does the bias setting of each amp need to be spot on the same as the other amp? If the settings were a bit different (one amp running a bit warmer than the other) would that change sound quality for the worse?