justonwo
Platinum Supporting Member
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I just purchased a pair of EL84s to install in a friend's Mesa Boogie Studio 22. I haven't been able to find any schematics anywhere for the purpose of locating the bias pot, but KCA NOS Tubes has a brief statement at the top of their EL84 page that says most of the amps that use these tubes don't require bias adjustment. Can anyone comment on this? Is the bias unadjustable on this amp?http://www.kcanostubes.com/EL84.html