Treadstone

Imagine squeezing a full analogue monosynth voice into just 22HP of Eurorack space, or a tiny desktop box that punches way above its weight with retro vibes from a reissued SSM2044 filter.

At its heart is a discrete VCO blending saw, square, and pulse waves with PWM control, plus a sub-oscillator and noise generator that mix into an analogue SSM-style 24dB/octave multimode filter. Controls are tight and intuitive: tweak attack, sustain, and shared decay/release on the envelope generator, spin the single LFO speed knob for triangle or square modulations via patch points, and dial in a lo-fi digital delay with a unique Reflect mode. Patchable CV inputs handle 1V/oct pitch, gate, PWM, filter cutoff, and more, while a built-in MIDI-CV converter and 16-step loop sequencer let you sequence notes directly from DIN MIDI in. The rugged steel and aluminum build with solid wood sides and smooth aluminum-knobbed pots feels premium, and a bypass switch lets raw osc signals hit the mono output untouched for effects processing.

Players love its big, warm tones and modular flexibility in such a compact form, though some note quirks like fixed mixer levels and subtle LFO bleed as part of its charming analogue personality.