[sdiy] How does the JX3P VCA work?

[Justin Owen]

-----Original Message-----
From:  [rburnett at richieburnett.co.uk]

>The VCA in the JX-3P only uses a single pass transistor between the 
attenuated source and the op-amp.  I've never seen the other arrangement 
with two matched transistors before.

So if the JX3P only uses a single transistor (?) and the MS20 definitely only uses a single transistor - what's with the second transistor in the schematic from the OP?

- Justin