This was originally posted on Sept 17, 2008.
Samuel Groner shoot-out 27 popular audio IC op-amp performances. It comes with a complete paper of test setup and op-amp theory. A great resources for any audio DIYers and manufacturers who never do these tests on their own.
This is a serious reference documents for anyone who uses opamp in audio signal path.
http://www.sg-acoustics.ch/analogue_audio/ic_opamps/pdf/opam p_distortion.pdf
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