Electroacoustic Companion

OCELOT is a tactile electroacoustic interface and a compact monitor station.

why
• To bridge your Eurorack system with the outside world during open-air sessions.
• To mix, monitor, and listen to your patch anywhere with the integrated speaker and headphone driver.
• To explore electroacoustic feedback loops between the built-in speaker and contact piezo combo.
• To capture physical vibrations and send them into your system as an organic audio source.

with
• Field recording setups – as a portable monitoring and mixing hub for outdoor patching.
• Resonators – feed them with the piezo output and listen to physical acoustics come alive.
• Delays and Reverbs – create organic, self-sustaining feedback drones through the speaker.
• Multiple Ocelots – pair two modules using the direct speaker input for stereo acoustic monitoring.

how
Ocelot is designed as a versatile companion for both utility mixing and acoustic experimentation.
The signal path begins with a contact piezo element normalized to two mono inputs (1 & 2). Plugging a cable into input 1 or 2 breaks the piezo normalization for that channel.
An additional stereo Aux input (AL, AR) allows merging external stereo signals into the mix.
The internal combiner merges the signals and splits the path into two distinct sections:
-Speaker Amplifier – sends the combined mix to the built-in speaker, controlled by a dedicated volume potentiometer.
-Output Section – the large master knob controls the balanced stereo outputs (L & R), while the smaller knob below adjusts the headphone driver output (P).
Special Routing Jacks:
C (Speaker Direct Input) – bypasses the internal combiner. Plugging a cable here disconnects the speaker from the internal mix, allowing direct drive from an external source (ideal for dual-speaker stereo setups).
O (Piezo Output) – direct output of the integrated piezo driver to send Ocelot vibrations into other modules.

features
• 4-input compact mixer (2 Mono with level controls + 1 Stereo Aux).
• Integrated speaker with independent volume control and direct override input (C).
• Built-in contact piezo normalized to mono inputs with dedicated direct output (O).
• Balanced stereo outputs (L & R) with master volume control.
• High-fidelity headphone driver with independent volume knob (P).
• Electroacoustic feedback capability between built-in speaker and piezo element.
• Native integration with Singoli with a dedicated header on the back.
• Reverse power protection.

Demos and build documentation at jolin.tech/ocelot and on our IG @jolinlab

https://youtu.be/JAthNEqTjH8

www.jolin.tech/ocelot