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Explore uncharted kick territory. Choose from nine unique models (and counting) and let the randomizer surprise your creativity. Precision sound-shaping knobs with wide sweet spots make flawless tweaks effortless.


Basics
LENGTH - Adjusts the overall duration of the kick—from tight clicks up to long, sustained thumps.
SUSTAIN - Sets the perceived volume “tail” of the kick, letting you balance punch vs. body in the mix.
ATTACK - Controls the amount of high-frequency transient energy—add snap or smooth it out.
Tuning & Transient
PITCH - Tunes the fundamental frequency of the kick (≈C1 to C2), either by manual knob or V/Oct tracking.
PITCH CURVE - Morphs the pitch-envelope shape: CCW for soft, 808-style pitch drop; CW for snappier, 909-style.
TRS DECAY - Sets how quickly the transient fade-in clears, balancing punch versus presence.


Tone & Effects
COLOR - Adjusts the body’s harmonic content—from warm analog timbres to bright wavetable tones.
FX - Selects and dials in onboard processing (clipping, wavefolder, distortion, etc.) for character and grit.
TRS TONE - Shapes the transient’s timbre—darker for tight thuds, brighter for pronounced clicks.
Models & Variations
FUNCTION - In Producer mode, randomizes the current model instantly—perfect for sparking inspiration and “happy mistakes.” In Performer mode, it advances your custom kick sequence.
MICRO SD - Houses nine factory “model” files and lets you load new wavetables or samples so you can expand or fully customize your kick engines.

Craft dynamic percussive textures with ease. Sync a secondary kick to clock divisions and fine-tune every tap’s level, pitch, and FX using intuitive controls.

Pattern & Dynamics
CLOCK - Triggers the secondary kick voice in perfect sync with your system clock.
TAPS 2/3/4 - Set individual volume levels for each sixteenth-note subdivision.
VOL - Balances the overall level of your groove layer against the main kick.


Shaping & Effects
LENGTH & PITCH - Adjust the decay time and relative tuning of each tap for rhythmic variation.
COLOR - Sculpt the harmonic texture of the groove—warm thuds to bright accents.
FX - Choose and dial in onboard processing (filters, distortion, etc.) to add character to your taps.
Bohm:Performer blends dual kick engines with external stereo input, offering precise side-chain ducking, intuitive one-touch DJ effects (filters, beat/slip rolls), and full CV assignability—empowering live performers with seamless, dynamic mix control.


One-Touch Performance Effects
FX - Selects and controls DJ-style processing—LP/HP filters, beat rolls, slip rolls—synced to your kick hits.
Routes effects to the kick only, the external input only, or both simultaneously.
ON/OFF - Toggles your chosen effect in perfect sync with each kick trigger.
Mix & Side-chain
IN - Feeds external stereo audio into the module for integrated processing with your kicks.
VOL - Balances the level of your dual kick voices against the incoming audio.
DUCK - Adjusts sidechain compression depth, letting your kicks cut through the mix.

They love bohm
I’ve been using Bohm with the Groove expander in my live sets and find the combo to be incredibly intuitive and performative which is exactly what I want for my performances.

Man I love this module so much. It is also sound-design powerhouse, that is end-to-end sweet spots! How you managed to achieve this, is nothing short of wizardry.

Bohm is the best kick ever for eurorack because it has everything I would want from a kick. Massive sound, programmability, and expandability. Unrivaled

Showcase
@sakrmusic playing with Bohm and ohmicide modules 🖤
Videos
Bohm - models walkthrough - no talk
Bohm - hard techno model - no talk
Specifications
General
- Width: Bohm 18HP / Groove 10HP / Performer 8HP
- Height: 3U
- Depth (including connectors): Bohm 28mm / Groove 26mm / Performer 26mm
Power Consumption
- +12V: Bohm 130mA / Groove 20mA / Performer 10mA
- -12V: Bohm 10mA / Groove 10mA / Performer 5mA
- +5V: 0mA (unused)
Audio
- Sample rate: 48kHz
- Hardware audio converters bit-depth: 24-bit
- Internal processing bit-depth: 32-bit floating point
- True Stereo Audio
- High fidelity Texas Instruments Burr-Brown audio converters
- Latency: 0.33ms
Controls
- Knobs resolution: 16-bit (65536 distinct values)
CV Inputs
- Voltage: ±5V (0..5V compatible)
- Resolution: 16-bit (65536 distinct values)
Memory
- Current model, last model variations for up to 12 models
- 32 programs of 16 steps each
- Systems settings
SD Port
- Type: microSD, SDHC class 10 or greater
- Capacity: Up to 32GB
- Format: Only FAT32 with MBR (Master Boot Record) is supported
The SD port is used to update the module firmware, store the Bohm kick models as well as user-provided wavetables and samples.
Documentation
Firmware update
→ Link