MarkIII Tubes

[guitargonaut]

The manual for the MarkIII says you can put EL34s in the outer sockets. I'm wondering if I can put EL34s in all four sockets... does anyone here know if this would be alright?

 

[Joey707]

Sounds like you have a simul-class amp. If that's what it is you can run EL 34's or 6L6's in the outer sockets. You cannot run EL 34's in the inner sockets. The inner sockets are 6L6 only.