Back in 2001, this beast emerged as the ultimate analog filter weapon, turning simple signals into throbbing, otherworldly soundscapes that defined techno and industrial edges for years.
At its heart sit two independent 12dB/octave multimode analog filters—low-pass, band-pass, notch, or high-pass—with precise knobs for frequency, resonance, and bipolar ADSR envelope modulation that can sweep positively or negatively. Link them in parallel or serial via a continuous blend control, or couple frequencies musically with the Harmonics switch and Filter 2's 6-octave range for synchronized madness. The front panel brims with hands-on tweaks: input overdrive for grit, hi-boost/cut, internal noise generator, selectable pitch tracking, LFO with sine/saw waves and phase-opposed mod depth, FM/AM inputs, plus a VCA with AR envelope and wet/dry mix. MIDI handles numerous parameters, while CV jacks for triggers, pedals, and linking multiple units make it modular-friendly; the desktop version's compact 430x110x80mm metal chassis weighs just 3.8kg with external 15V AC power.
Over two decades on, it's earned cult status among producers for its raw, unpredictable character—loved for beastly distortion and filter sweeps, though some note the hissy charm got tamed from the original. If you're chasing vintage analog fire that still slays mixes, this one's a timeless grab.