Well I am starting to experience great volume loss on the clean channel of my Peavey xxx. It isnn't constant however. It is also cutting out on all channels and I believe this is because of my power tubes which have never been changed in the past few years since I bought it new. I know the preamp tubes are fine as I replaced them about a year ago. Without breaking my wallet can anyone recomend a specific type/brand maybe? I see many different groovetube 6l6 tubes but don't wanna pick one based on writing. I want to stay with my 6L6. Wanna keep my really clean cleans and want some extra edge on my lead channels. If not I guess i'll have to buy ruby tubes which it had in it.