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Old 2nd Dec 2021, 1:19 am   #41
Craig Sawyers
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Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,941
Default Re: Quad 34 preamp volume knob clicks

Plucking more recent FET input opamps from the TI stable, the OPA1641 (single) and OPA1642 (dual) might be worth a deeper look. About twice the current per amp channel as compared with the TL072.

https://www.ti.com/product/OPA1642

Surface mount only of course, so if this is an option, they will have to go from SOIC 8 to DIL via adaptors (cheap).

Of course, the question is: why not stick with the 071/072?
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