The “Work Shop Board A” is a quad square-wave oscillator board that is completely self contained on a single PCB.
Although simple in design and assembly, the WSB-A’s voicing architecture offers a network of ring modulators and frequency synchronizations that interconnect the four oscillators in ‘a web of glorious noise’. The addition of a dedicated photocell for each oscillator’s pitch expands the range of the synth.
The WSB-A will be available as both a kit and as a fully assembled unit. The initial run is of assembled units for $60.
Here’s an audio demo:
See the Marsynth site for details.