What do you do for burn in with a new amp? I have 2 new (to me) amps, one I'm sure has been played the heck out of which I'm not worried about. The other is semi-new (it was a refurb unit from Music123). Do you just turn it on and leave it on (standby off) for like 24 hours or something. Obviously I plan on playing it a lot too, but for instance right not my son is napping (although the MV works incredibly well on the amp). Or, do you just let it break itself in over time?