#1
Hey guys, I have come across a issue with my amp that has occurred lately.

I have been playing it and it seems quieter than it should be when it's cranked up, so guessing that's the tubes.

However I find that if the amp is being played its makes a weird squeak noise. But I can replicate the sound when I hit it from the top (just to see it doing it). Is it something wrong or just a tube issue?
Running through:

Engl Fireball
Engl Slanted Cab
Ibanez Xiphos
Schecter C-1 FR Black
Ibanez GRG (on its way)

Pedals:
Boss Noise Gate, Zakk Wylde Overdrive, Boss Tuner, Zakk Wylde Wah.
#2
Yep.. Just had my other guitarists fireball 60 do the same thing. It was the PI tube on his.
/rig
#3
or the v1
tone slut

Mesa Boogie Mini Rectifier
jet City 2112 Combo
Gibson SG Standard
Gibson Les Paul Studio
Fender Classic Vibe Telecaster