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Tube amp biasing

denny wittenauer
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Joined: 08/16/11
Posts: 36
denny wittenauer
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Joined: 08/16/11
Posts: 36
12/02/2015 8:06 pm
I would like to switch out the Chinese made EL 84 tubes in my VOX AC15 with a new, matched set of JJ EL84's. Is biasing required once they are installed. Thanks.
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fuzzb0x
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fuzzb0x
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Joined: 04/02/13
Posts: 580
12/06/2015 1:10 am
Originally Posted by: denny wittenauerI would like to switch out the Chinese made EL 84 tubes in my VOX AC15 with a new, matched set of JJ EL84's. Is biasing required once they are installed. Thanks.


if changing the power amp valves then yes the amp will need to be biased.
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denny wittenauer
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Joined: 08/16/11
Posts: 36
denny wittenauer
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Joined: 08/16/11
Posts: 36
12/07/2015 2:12 pm
Thanks, much appreciated.
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