If your amp features auto-bias you don't need to do anything but replace the tubes. Some manufacturers say the tubes don't have to be matched. That may or may not be true but I suggest buying matched tubes anyway.
new tubes on auto-bias amp,can be done by anyone?
could i just simply put NEW tubes on an AUTO-BIAS amps? as long as the PAIR/QUAD tubes are matched?!? right? 'coz every time i called-up the manufacturer,,,they always recommended sending the amps to them,,,SO HASSLE,,, physically & emotionally,,,i can't get a straight answer from them,,,was it just their another marketing strategy? or they were being SOO...HONEST,,,my objective is TUBE ROLLING,,not for a repair,,,,thanks