Granular textures, glassy keys, and metallic drones all pour out of a compact box you can literally build yourself. The preenFM3 takes classic FM synthesis and drops it into an open, hackable desktop instrument designed for deep sound design and modern studio workflows.
At its core, the preenFM3 is a digital, 6‑operator FM synthesizer offering up to 16‑voice polyphony and up to 6 independent instruments at once, each with its own per‑voice digital effects and granular-style algorithms. You get a 240×320 color TFT display and a focused interface that makes navigating complex FM patches surprisingly immediate, with a built‑in real-time and step sequencer to turn those sounds into evolving patterns right on the unit.
Multitimbral by design, the preenFM3 gives you 6 assignable audio outputs so you can route instruments to separate channels on your mixer or audio interface for serious production and live setups. Running at a 48 kHz sample rate, it delivers clean, detailed FM tones from classic 80s-style chimes to experimental modern textures, all inside an open-source platform available as a DIY kit, PCB set, case, or fully assembled desktop synth.
