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BASTL Instruments
Trinity MONO FM Synth

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Item: N13-2762

Availability: In stock

Trinity MONO FM Synth
Trinity MONO FM Synth Trinity MONO FM Synth Trinity MONO FM Synth

Bastl Trinity MONO FM Synth

The Trinity Mono FM Synth features one oscillator, three modulators, and an LFO. As its name suggests, the Mono FM is a monophonic synthesizer that excels at Frequency Modulation. The unit enjoys eight sounds for each preset, with a total of six presets being available. The module’s oscillators can be configured in accordance with eight separate algorithms, and sound can be shared via SysEx. 

The Trinity Mono requires the MIDI Bastl in order to properly interface with external MIDI gear.

Trinity MONO FM Synth Features

  • Experimental monophonic FM synthesizer
  • 8 different sound for each preset
  • 6 presets
  • 1 carrier oscillator with pitch tuned in semitones
  • 3 modulation oscillators with adjustable harmonic multiple of carrier frequency, detune and amount of modulation
  • 8 algorithms of oscillator configuration
  • 3 wavetables for all oscillators (sine, saw, white noise)
  • LFO with adjustable rate, resolution, amount, destination on different parameters and 8 different shapes
  • Exchange sounds between more Mono FM Synths by SysEx message
  • MIDI native by side connectors, note, CC support, thru
  • MIDI connector by connecting MIDI Bastl by the side


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  • Open-source, DIY, handmade, hackable, repairable
  • Bastl library with all source codes – gitHub
  • Atmega 328 chip reprogrammable by Arduino IDE (Arduino Uno compatible bootloader)
  • Runs Mozzi library in HI-FI mode
  • Midi implementation chart (you are able to add comments)

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