kt 88's for mark 3?

[timjtitus]

i'm looking to get more punch out of my mark 3. i'm using winged c el34's in the outer sockets and the mesa 6l6gc str 440. not sure how old the 6l6's are and it's a blue stripe.

 

[stephen sawall]

Do not put Kt88's inthat amp.
It is not made for them.
Call Mesa and ask.
KT66 may be what you want ?
Maybe not ?