Available as an assembled Module and as a DIY project.
This Module is currently available.
Waveshaper with 4 CV inputs
The build is great for beginners learning how to surface mount solder. All the passives are 0603 and there is only 1 IC with a pretty wide pitch.
To adjust the trim pots, input a saw wave. Measure the voltage of the signal going in to a channel and adjust the corresponding channel's trim pot so the output has the same voltage.
There is also a XWSX exapnder module in the make
Martin Audio W8C, WSX$7,658.81
Sansui WS-X1$606.43
Sansui WS-X1$1,336.83
Sansui WS-X1$533.58
Sansui WS-X1$1,087.69
Sony WS-X10W$79
These merchants probably sell this module. Huh?
