Dear Torogi,
I don't see where you say you have any problem with how the amp sounds. It is highly improbable that it could operate properly if indeed those tubes were not firing up. It is often difficult to see the glow from a tube; have you looked at them in a darkened room at night? I suspect that you have no problem at all. Or is there something perceptibly "wrong"? If so, what?
I don't see where you say you have any problem with how the amp sounds. It is highly improbable that it could operate properly if indeed those tubes were not firing up. It is often difficult to see the glow from a tube; have you looked at them in a darkened room at night? I suspect that you have no problem at all. Or is there something perceptibly "wrong"? If so, what?