Back in the mid-90s, this tiny powerhouse emerged as one of the earliest rackmount takes on the legendary TB-303 sound, packing authentic acid squelch into a space barely deeper than a paperback.
It's a pure analog monophonic synth with a single VCO that blends sawtooth and square waveforms via a dedicated knob—something the original 303 couldn't do—spanning a playable four-octave range. Eight front-panel knobs deliver immediate control: fine tune for semitone tweaks or subtle pitch bends, smooth cutoff and resonance for that classic 303 filter behavior that emphasizes highs without gutting the bass, envelope mod and decay for punchy sweeps and blips, plus accent triggered by high MIDI velocity for dynamic snaps. The super-compact 1U chassis measures just 19 inches wide by 2.5 inches deep in silver finish, with a simple rear panel offering MIDI In via DIN (channel set by DIP switches), 1/4-inch audio out, VCF input for external signals, and a 12V AC external power supply. No menus, no presets—just live, hands-on tweaks.
Over the years, folks have loved its spot-on 303 emulation for acid lines, percussive psy bass, and even general low-end duties, praising the real VCO heft and expressive filter that shines through distortion or desks. A few note its fixed tuning range and lack of MIDI CC control as limits, but most call it a steal for that juicy, bubbly analog vibe.
