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Old 6th Jan 2019, 12:29 am   #7
joebog1
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Join Date: Jun 2015
Location: Mareeba, North Queensland, Australia
Posts: 2,704
Default Re: EL34 power amp reworked as a stereo amplifier

Nice work Andy!!
maybe lift the heater rails ?? to fix the hum?
Maybe use a 12A*7 either parallel, or two low gain stages?
Have a look with the cro and perhaps re route your feedback network away from everything else.

Just a few thoughts.
Joe
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