Stooly
Well-Known Member
Replied on R/T too...
But I doubt you'll be able to set the bias hot enough. You can use them, but they'll be biased really cold. You may need to replace the bias resistor.
True, I can't even get the bias hot enough now. 35w/542v=.065 x .7= 45mv according to my bias meter. Maxed bias I'm getting about 32mv. Tried another set of JJ 6550s I had laying around and they were 30mv.