Incidentally, quoting from the downloadable VM900 manual,
So the CP3 rev 1 has designed-in non-linearities. I included the quotes about the click filter because that would clearly exacerbate the problem, if used with audio signals. I don't know if any of this is of help, but figured it's always a good idea to get a good fix on the ground state, so we're sure we're all talking in the same mental space.The VM900 CP3 is a recreation of the classic Moog
"Console Panel Mixer." At high inputs levels, it had a
tendency to clip the tops and bottoms of waveforms for a
characteristic overdriven tone. We've also included a
switch that allows selection between the more overdriven
tone and the later, cleaner-sounding version.
Note that CP3 is DC-coupled and can be used to mix audio
or sub-audio CV signals.
Model- Selects the audio characteristics of the earlier or later production CP3 circuit. Rev. 1
has more of a tendency to clip waveforms, whereas Rev. 2 is less inclined to break up.
Click Filter- When engaged, this rounds of sharp waveform edges to reduce clicking - it's
intended for use with edgy control signals to reduce clicking when patched to something
such as a VCA CV. The Click Filter is generally not recommended for use with audio signals.
Reid