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Old 6th Aug 2020, 12:04 am   #30
Ted Kendall
Dekatron
 
Join Date: Jul 2008
Location: Kington, Herefordshire, UK.
Posts: 3,658
Default Re: Simple Op Amp RIAA preamp 1st lash up

The 100nF between rails is all but essential on these chips to avoid instabilities at ultrasonic frequencies, which sometimes show themselves as a mysterious increase in distortion.
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