Analog VCO module equipped with a wave shaper

WAVES is an analog VCO module equipped with a wave shaper.
It outputs sine, triangle, square, and sawtooth waves,
and its Serge-style serial wavefolding circuit with up to four stages can generate a wide range
of sounds, from smooth waveforms to aggressive, harmonically rich complex tones.
It also features /2, ×2, and ×4 outputs based on a PLL circuit,
producing octave signals with a unique character.
In addition, it supports SYNC, FM, and 1V/Oct inputs,
enabling a broad variety of sound design possibilities.

http://hikari-instruments.com/manual/WAVES_manual.pdf