[sdiy] The sound of various Op-Amps

[jhaible at debitel.net]

Try 10nF across the 10k feedback resistor.

JH.

> > I've found the OP275 chips to be quite nice in audio paths.
> 
> I concur.
> 
> But try this one at home kids: build a voltage follower with 10K input
> resistance and a 10K resistor in the feedback path. Usual trick to keep
> input impedances similar to reduce affects of bias currents and possibly
> phase reversal if your lucky. And viola, the OP275 honks in the MHz. Now
> I know unity gain is always going to push the limits of stability thanks
> to that oh so naughty phase response, but that was a suprise. Perhaps I
> should re-read the datasheet again. Remove the feedback resistor and all
> is well...
> 
> For audio only the ye olde 5532 and using low value resistances the 5532
> is better sounding to my ears than the OP275. A lot cheaper too. I also
> rather like the LF412 for general purpose audio and CV use.
> 
> Regards,
> 
> Tony Allgood                       Penrith, Cumbria, England
> 
> Oakley Sound Systems                   www.oakleysound.co.uk
> Modular Synthesisers      www.oakleysound.co.uk/projects.htm
> 
> 
> 




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