#1
I have a peavey 6505 and i want to replace the stock tubes to give a better sound

can i just buy some JJ/telsa valve of the same model and put them in or would i need to re-bias the amp?
GUITARS:
Jackson SLS3
Ibanez ART120 w/ Duncans
AMPS:
ENGL Fireball
PEDALS:
Boss NS-2
MXR ZW-44
TC Polytune
Digitech Drop pedal

My band: www.facebook.com/deifieduk
(actually called Deified)
#4
Quote by Wasted Resource
You might want to post this in the gear building and customization section.

No

As long as you buy the same type of tubes (i.e. 6L6), it shouldn't be essential to bias. If you changed tube type you would definitely need to re-bias.