Re tube bravo, does it need to be biased

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BCM
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Re tube bravo, does it need to be biased

Post by BCM » Sat Jan 18, 2020 8:08 am

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.

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

Post by Enzo » Mon Jan 20, 2020 2:53 pm

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.

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