Speaking of which, I was being serious... it is hard to install LED's that run off the amp's normal power supply, i.e. similar to an Engl? Man, that would be pure sex if I could get that running. The LEDs would be either Orange or Blue... blue LEDs look amazing behind tubes! Eeeeexcellent!
It's actually really easy: AMZ-FX Guitar Effects Blog » Blog Archive » LED indicator for tube amps