Hi,

I posted file "First A-131 buzz.mp3", that shows buzz created by the
first A-131 VCA I owned. So, you have two different samples from two
different A-131 VCAs buzzing in the same way. I removed A-132 sample
because there was no space for everything.

I also want to thank everybody who spent the time and effort to help
better understand (and possibly resolve) this issue.

Regards

Zoran