Now I'm almost certain that my problem is the powertubes going bad.. but.. I'm really no expert. I've been getting a lot of static/popping noises at random lately and just today I noticed my amp is significantly quieter... especially after it heats up for a while. I opened up that amp and noticed one of my tubes is growing a really bright red (never used to do that.) Anyway.. tube problems or something worse? So what should I get for tubes. I really loved the way this amp sounds.. so maybe I should get some more stock ruby tubes? Or maybe it will sound better with.. different tubes? I heard the jj's are good.. they've always sounded good to me in the other amps. I thought about maybe getting some JJ's for the preamp and mullards for the power. Also I noticed there are two preamp tubes labled high-gain... so.. should I look for highgain preamp tubes to replace it or does that matter? I'm not looking for the classic vox tone.. in fact I like the greenback more than the blue's.. I'm just looking for a really nice sound. I also don't want anymore gain.. less gain is fine.. just no more gain.