Bias controls for fixed-bias tube amps

[makinrose]

Thanks for the great post! I'm in 100% agreement with you about trimmer pots. I work on tons of amps that have them---they adjust poorly and often placed too close to high voltage to comfortably adjusted. After reading TUT 3 all my amps got pots for each tube and repairs and adjustments are a breeze. It also a mod I do to vintage amps so players can use NOS power tubes without constraint.