11-06-2014, 02:06 PM
hmm, could be a lot of things.
Did you end up setting your bias a little higher than the roughly 19ma per tube you were initially experiencing?
if there is enough crossover distortion that can certainly become audible.
do you have a scope? can you feed the input a 1k sine wave, plug the amp into a dummy load and view the output on the scope?
Did you end up setting your bias a little higher than the roughly 19ma per tube you were initially experiencing?
if there is enough crossover distortion that can certainly become audible.
do you have a scope? can you feed the input a 1k sine wave, plug the amp into a dummy load and view the output on the scope?