My current mirror variation on the Baxandall Class-D oscillator - minor revisons

I've changed the circuit a bit - essentially taking out bits that didn't add value - but I did change the Sallens and Keys filter to one with a bit of gain that gives you a maximally flat time delay with standard value components.

The performance is marginally better.

http://sophia-electronica.com/BillsBaxandall.html

-- 
Bill Sloman, Sydney