Anyone familiar with the Philbrick K2-W and it's suitability for audio?
It's the grandfather of the op-amp.
http://www.philbrickarchive.org/k2-w_op ... lifier.htm
Tube opamp?
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Tube opamp?
by jeffdavison » Wed Jan 16, 2008 12:10 pm
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by EWBrown » Wed Jan 16, 2008 1:02 pm
I remember seeing these in surplus around the late 1960s... No reason it shouldn't work for audio, the 100KC response and 2 uS response should be more than high enough.
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ed B in NH
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by Shannon Parks » Fri Jan 18, 2008 6:12 am
FYI, Bob Pease has a good article or two from the last couple years on the history of tube op amps.
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