Mark IV tube Question?

[themisfit138]

Is it possible to put KT77s or KT88s in place of EL34s in a Mark IV?

 

[Jarrod]

Is it possible to put KT77s or KT88s in place of EL34s in a Mark IV?

KT77 is a EL34 pretty much. Yes, it is possible to run KT88's as well, although I'm sure they are not drop in ready. May have to bias the amp or have someone hand select hot or cold tubes like Eurotubes does or Dougs tubes.

 

[visualrocker69]

Is it possible to put KT77s or KT88s in place of EL34s in a Mark IV?

KT77 is a EL34 pretty much. Yes, it is possible to run KT88's as well, although I'm sure they are not drop in ready. May have to bias the amp or have someone hand select hot or cold tubes like Eurotubes does or Dougs tubes.

Mesa amps are fixed bias? :?