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12au7 valve preamp (again?)
12au7 valve preamp (again?)
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Old 22nd December 2012, 07:53 PM   #11
Gost22 is offline Gost22  Bolivia
Join Date: Sep 2012
Location: San Ignatio de Velasco
After some changes in the schematic, go to the power supply of +B=250V - you see this kind of soundgives this preamp with ECC82/ECC83!
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Old 5th January 2013, 06:54 PM   #12
ctcorp is offline ctcorp  Brazil
diyAudio Member
Join Date: Nov 2007
good evening boys, need to reduce the gain of this thing, what should I change?
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