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Re tube bravo, does it need to be biased

Posted: Sat Jan 18, 2020 8:08 am
by BCM
I want to try different, but matched EL84s on the output side, do I need do anything other than switch them out?

Do the 12ax7 tubes need bias changes when switched out? I take it they don’t have to be matched, any recommendations on tubes for the clean channel, a good tube for metal on the dirty channel, where are which ones located.

Re: Re tube bravo, does it need to be biased

Posted: Mon Jan 20, 2020 2:53 pm
by Enzo
The bias on the Bravo is not adjustable.

Preamp tubes have no bias adjustment. Only power tubes ever have bias adjustments, and not all of them. As we see here.