#1
hey,

i bought a second hand marshall JCM 2000 DSL 401 in about august this year and i really like it.

but...

while shopping for some new pickups for my SG the other day i was using the same amp model but a new one with my guitar and the new amp seemed to have more of what i can only describe as balls.

i was wondering could it be the valves or the speaker thats responsible for my amps lack of balls. ive got a boss sd-1 and a ge-7 that i use to compensate for it, but the new model in the shop done what i wanted it to with out the boost from my pedals.

i mostly play metal its a gibson SG special and the pickups im getting a seymour duncan JB's

thanx sorry if ive missed anything out.
#2
Either your tubes are biased cold, or the bias has drifted on them since they were last done.
Guitars:
Gibson Les Paul Standard
Gibson Explorer New Century
Gibson RD Artist
Fender American Standard Telecaster

Amps:

Framus Cobra
Marshall JCM800 2203 - 1960A

Pedals:

Crybaby 535Q
Rockbox Boiling Point Overdrive
#3
Quote by R.D
Either your tubes are biased cold, or the bias has drifted on them since they were last done.



how do i bias my valves?