Can tubes become less powerful? (for lack of a better term...) I've noticed that my month old SVT-3 Pro is less loud than when I got it. I have to turn the gain all the way up and is impossible to clip it. Where a month ago, I only had to turn it up to 3/4 before it started overdriving. I got a new distortion pedal and forgot to turn the gain down on it. When I looked at the amp. That gain light was brighter than a christmas tree. There was A LOT of signal going into it. So... can tubes... or amps for that matter... lose power over time? or is it just a case of me going insane? Maybe I'm losing my hearing. I checked the tubes... all 5 of them still have an orange glow inside of them.