Uberschall Rev green question on EL34B, KT88 and bias

[errrrrl]

So I have rev green I picked up a year or two ago that I think is in need of a retubing. As far as I know the amp is stock with el34 winged C's in it, not sure what the bias is set at yet, guessing somewhere between 28 to 35mA.

Can this amp take KT88's as is with a rebias? Or does it need to be modded for that?

Also I have a set of EL34B's which I never used before, would those bias the same as regular EL34's?

THanks!

 

[leib10]

I had to mod mine with a new resistor and had a bias switch added so I could switch back and forth.

 

[Techdeth]

I had to have Bogner mod mine

 

[psychodave]

There are some threads here and on the net telling you what to do. I personally wouldn’t drill for a switch due to resale value.