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Originally Posted by NathanEldred  I've been told by people such as Tim Farrant, Andrew Roberts, Steve Hogan (Steve is actually the guy who developed the 990c), and Fred Forsell that just slapping any old transformer on any old op amp is a bad idea for various reasons. Did I hear wrong? |
No Nathan, you have a good point. The input transformer may require compensation to avoid nasty frequency response rises at higher frequencies which may cause instability problems at high gains. I am not sure if Eisen Audio gives you the correct component values relative to the transformer you choose.
Tim