Meet the Instruō øchd expander ([ø]4²) — the expansion module for one of Eurorack’s most beloved modulation sources, the øchd.

First launched in 2019 and designed in collaboration with Ben “DivKid” Wilson, the øchd quickly became a staple in thousands of Eurorack systems as a compact and versatile modulation source. The øchd expander [ø]4² builds on that legacy, adding 16 extra outputs and four new layers of functionality to øchd’s normal operation.

Using øchd’s eight LFOs as signal sources, the expander introduces:

• Full-wave rectified unipolar positive LFOs

• Analog diode logic for minimum and maximum voltage mixing

• Cascading stochastic trigger signals for complex rhythmic patterns

• R-2R 4-bit random voltage sources for unpredictable variations

All of these remain tied to øchd’s global frequency control and CV attenuverter, making them intuitive and easy to integrate.

8 LFOs in 4HP is impressive — but with the øchd expander you now get 24 modulation sources in just 8HP.

Features

• 16 additional outputs for øchd

• 4x full-wave rectified unipolar positive LFOs

• 2x analog diode logic pairs (AND/Min and OR/Max)

• 4x cascading stochastic trigger signals

• 4x R-2R 4-bit random voltage sources (slow noise)

Size: 4HP | Depth: 32 mm
Power: +12V 5mA | –12V 5mA