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Products of ST Modular

ST Modular is a source for DIY Eurorack modules and synth kits, empowering builders to create custom modular synthesizers from supplied PCBs, panels and parts. The product range covers oscillators, filters, sequencers, mixers, LFOs, envelope generators and effects, plus compact desktop synths and utility tools – each module engineered for wide creative flexibility and hands-on sound design.

Born from a hobbyist’s experiments with breadboarding and electronics, ST Modular operates as a small non-profit: revenues are reinvested into prototyping new modules and instruments. The project grew from one enthusiast’s curiosity and practical learning through books, experiments and community exchange.

Rather than manufacturing in-house, ST Modular licenses designs to partner manufacturers. It sells PCBs, panels and DIY kits directly while select partners offer fully assembled modules for users who prefer ready-built gear, enabling both DIY builders and those who want finished products to benefit from the designs.

ST Modular - Cyllene (Panel PCB)

available

Presenting timeless waveforms including Sine, Triangle, Pulse and 3 Sub-Octaves this oscillator emerges as an exceptionally stable, precise, and awe-inspiring sonic source. Its brilliance truly emerges when engaged in frequency modulation.Features• Classic Analog VCO• 4 Outputs: SINE, TRIANGLE, PULSE, SUB• Oscillation from supersonic to sub-audible (LFO)• 1V/Octave tracking• Pulse Width Modulation with Attenuator• Linear Frequency Modulation with Attenuator• Exponential Frequency Modulation with Attenuator• Integrated Frequency Divider• Up to 3 Sub-octaves• Attenuator for each Sub-octave• Wrong Polarity ProtectionDIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
€15.90*
ST Modular - Dirty Dan (Panel PCB)

available

Meet Dirty Dan, the eurorack rebel who doesn't play by the rules of clean and tidy. Dan's all about embracing the mess, dishing out gritty goodness, and making those pristine waveforms second-guess their existence. If your sound needs a touch of snotty charm, Dan's your man. Just remember, he's not just dirty – he's delightfully disruptive!Features• Vactrol-Based Analog Filter• Three Channels• Separate Distortion Stage• High Pass and Low Pass• Cutoff controls High Pass and Low Pass• Two Clipping Modes• Feedback Control• Skiff Friendly• Wrong Polarity ProtectionDIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
€15.90*
ST Modular - Give II (Panel PCB)

available

GIVE V2 is a sonic powerhouse that transcends the boundaries of traditional sound generation. The module is an exceptional analog VCO accompanied by a versatile waveform mixer and three suboctaves.Features:• Classic Analog VCO• 5 Outputs: SAW, TRI, SUB, NOISE, PULSE• 1V/Octave tracking• Pulse Width Modulation with Attenuator• Frequency Modulation with Attenuator• Integrated Waveform Mixer• Skiff friendly design• Wrong Polarity ProtectionDIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
€15.90*
ST Modular - Rocinante's Gate (Panel PCB)

available

Rocinante's Gate is not a classical low-pass gate (LPG) using vactrols, but goes way beyond that providing an adjustable envelope to control the "gate" through an analog filter. Sending a gate or trigger signal into the GATE INPUT will create these envelope shaped sounds you know from other LPGs.Features:• Low-Pass-Gate based on an Analog Filter• Internal Envelope Generator• Adjustable Rise, Decay, Length, Fall Stages• Internal LFO• Gate Level CV• Loop Mode• Re-Trigger Mode• Use the Envelope and LFO with External Modules• Skiff Friendly• Wrong Polarity ProtectionDIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
€15.90*
ST Modular - Werner (Panel PCB)

available

Actually, it's a ST Modular's Franz'd Ripples, if you will. Like Franz, Werner is a filter with an internal mixer and LFO. Not as buttery as Franz, but still one of the best filters around.Features:• Analog Filter• 3 Filter Outputs: Low Pass 2-Pole, Low-Pass 4-Pole, Band Pass 2-Pole• VCA for Low-Pass 4-Pole• Internal LFO with three Waveforms: Triangle, Inverted Triangle & Square• LFO Reset, LED indicating LFO rate, LFO normalized to Filter Circuit• Apply three LFO waveforms at the same time• Attenuator for each LFO Wave or external CV• 3-Channel MOOG CP3 transistor based Mixer• Volume control for each Mixer Channel• Wrong Polarity ProtectionDIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
€15.90*
ST Modular - Workbench (Panel PCB)

available

Meet the Swiss Army Knife's ambitious cousin - the multitasking marvel that sits in front of your Eurorack, ready to unravel musical puzzles, slice through soundscapes, and twea-zor its way into your sonic heart.Features:• Multiple• LFO• Attenuator• Fader• Swap• USB-PowerDIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
€19.90*
ST Modular- Boba Fat (Panel PCB)

available

At its core, Boba Fat features two oscillators that empower producers to easily craft both earth-shaking sub-basses and delicate, enveloping kicks.Features:• Analog Drum Generator• Designed for Kick- and Bassdrums• Two Voices: Soft Mallet and Hard Mallet• Each Mallet may be triggered independently• Internal LFO with Sync• Volume and Boost per Voice• Groove CV Input „Vari“ for Hard Mallet• Mod CV Input for Soft MalletDIY-Kit-Type:Panel/PCB Kit. This is a do-it-yourself panel/PCB kit, no parts are supplied, you will need to source them yourself.
€15.90*