Really clever stuff here. The Octaves VCO takes an additive approach, layering harmonics on top of a fundamental frequency to create complex tones. Control the six bands via CV to adjust the harmonic content.

Supplier's Notes:
A harsh and funky take of an additive Oscillator.

Pile up multiplications of your frequency to get a lo-fi-retro wall of squared sound!

You get six doubled frequency pulses, or octaves, with common PWM and volume control for each of them.

The output of each is cascaded to the next one, so you can either have one output with all frequencies or break the chain and get several sums and modulate each independently!

Features
Six bands, multiple of the base frequency.
Square wave oscillator with Octaves selector PWM control and sync.
Range control for Tune pot.
Volume CV control and individual output for each band
Cascaded summing outputs.

Specifications
Current needs: +12V: 110mA, -12V: 84mA
Width: 12 HP
Depth: 22mm (assembled and DIY), including power connector
Aluminium, heat-treated front panel
Designed, kits prepared and completed modules assembled in Barcelona