04-23-2020, 11:32 PM
Been using this amp every day for a long time now. Sounded great till today. One of the channels started humming loudly. Turned out to be one of the 6U8 matched pair driver tubes. Looks like I'll have to order another matched pair. Russ, you were right about them not lasting as long as one would wish. For now, back to solid state!