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
allanxxxoooxxx_18

Showing 1 response by macrojack

If amplifier is truly auto-biasing, you don't need to use matched tubes. The amplifier circuitry will match them for you. Best to do this before you turn the amp on after it is cold.
Also, I don't know what tube rolling means to you, but you need to use the same output tubes or an approved equivalent. You can't just plug in anything that has the same pin pattern.