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Some more DIY info for tube experimenters
MUFF WIGGLER Forum Index -> Metasonix  
Author Some more DIY info for tube experimenters
metasonix
For those of you who want to experiment with tube op-amp circuits, this is the schematic of the best-performing tube op-amp ever manufactured (that I know of); the Philbrick SK2-V. Very rare item so you'd probably have to DIY your own. The Nuvistors on the input can be substituted with other triodes having a similar mu and plate resistance. I have no idea how well this circuit performs, but I've done a lot of experimentation with its simpler predecessor, the K2V, and it had some real issues for audio use. This has got to be better.

mt3
fap fap fap...
metasonix
mt3 wrote:
fap fap fap...
metasonix
From a 1965 textbook of "useful circuits". It probably used two 12AU7s originally. I seriously doubt it will completely suppress the carrier but who knows.....build it and see!
Kujo
Great!
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