ST Modular – CHIASSO V2 (FM Drum synth)

£14.99£99.99 (exc VAT)


14 HP Analog FM Drum Synth designed to create all kind of crazy and tonal percussive sounds.

CHIASSO v2 is available as a pcb & panel set, full kit (SMD pre-soldered) or as a built module.

ST Modular website


Build docs


Chiasso 14 HP Analog FM Drum Synth designed to create all kind of crazy and tonal percussive sounds

The module has two oscillators that can generate square or triangular waveforms that you can seamlessly crossfade with the WAVE potentiometers. Each oscillator has its own CV decay envelope, a pitch potentiometer and can be triggered with a trigger signal patched to the left TRIG input as well as individually via the left and right TRIG inputs. A fade potentiometer offers the possibility to manually fade between both oscillators to adjust the mix. Noise can be added to the left oscillator A to make it a little dirtier.

There are PITCH CV inputs with attenuators for each voice which, although they don´t track exactly 1 V/OCT, are very useful for changing the mood of each signal to create very organic and moving sounds. The audio output of each side is normalised to the PITCH CV input of the opposite side. The left side is connected after the VCA and the right side before the VCA to achieve different types of cross-modulations and to apply modulation according to incoming trigger signals.

In addition, the module has two individual LFOs with square or triangular waveforms that can be fed to the oscillators for further frequency modulation synthesis. Both LFOs have an attenuator to adjust the strength of the modulation and a RATE potentiometer to change the speed of the LFO cycle.

The signals of the two oscillators are mixed and output at the OUT socket.CHIASSO is a great oscillator for driving Techno sounds and will surprise you with every turn of a knob.



Additional information

Weight 250 g
Dimensions 128.5 × 70 × 20 mm

Synthesiser parts/components

Product Options

Full Kit, Built Module, PCB & Panel, fader set, stand-off set, pcb, panel

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