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5/31/2025, 5:22:34 PM
btw
>https://www.diyaudio.com/community/threads/opa1612-from-aliexpress-no-counterfeit-but-why-so-cheap.399994/
>Although specifications of OPA1612 (bipolar) indicate they are superior to that of OPA1642 (JFET inputs) in practice OPA1642 performs slightly better. Strange but found too many times to ignore it.
as far as this test is concerned, OPA1611 performs better than OPA1641
https://www.audiosciencereview.com/forum/index.php?threads/measurements-of-19-20khz-imd-of-various-opamps-at-gain-40db.10730/
but replacing TL072 with OPA1612 might not be appropriate because of DC offset, input bias current, or current noise vs voltage noise, like in pic related they really don't want NE5532 for all of the ICs
>https://www.diyaudio.com/community/threads/opa1612-from-aliexpress-no-counterfeit-but-why-so-cheap.399994/
>Although specifications of OPA1612 (bipolar) indicate they are superior to that of OPA1642 (JFET inputs) in practice OPA1642 performs slightly better. Strange but found too many times to ignore it.
as far as this test is concerned, OPA1611 performs better than OPA1641
https://www.audiosciencereview.com/forum/index.php?threads/measurements-of-19-20khz-imd-of-various-opamps-at-gain-40db.10730/
but replacing TL072 with OPA1612 might not be appropriate because of DC offset, input bias current, or current noise vs voltage noise, like in pic related they really don't want NE5532 for all of the ICs
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