Thanks Mark but the pips are audiable when the signal is switched off not on, they do not make any sound when activated. I don't remember hearing them at all until I bodged it!
Interestingly, the whine reduces when the opamp board is swapped back in.
I thnk that two Caimans are a must when modding - you can always check the standard one out when stuck!
Regards




Originally Posted by Reid Malenfant


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