Harness the warmth of vintage analog tone with teeth.

The Sirius is a 4-pole low-pass filter inspired by the circuitry of classic 80s synths like the Korg PolySix, Mono/Poly, and PPG Wave 2.0. We’ve re-engineered this timeless design with a germanium diode distortion stage to add grit and presence, while extending the resonance range all the way into self-oscillation.

At full resonance, the Sirius transforms into a ground-shaking sine oscillator that tracks 1V/oct via the frequency CV inputs. The Bias control lets you fine-tune pitch tracking or dial in precise resonance tuning, making it easy to match pings or oscillation to the key of your track.

Two outputs provide flexibility — a dirty path that runs through the distortion stage, and a clean one that bypasses it for classic tones or creative self-patching feedback. From smooth sweeps to snarling drive, Sirius brings both vintage character and modern control to your rack.