The Roland MC-202 Could Only Play One Note at a Time. Audio Damage's Plugin Plays Eight.

What exactly is the AD-202?

Audio Damage built the AD-202 around the same architecture that made the Roland MC-202 a fixture of early acid and electro sessions: one VCO running saw, pulse, sub and noise into a 24dB resonant ladder filter, one envelope, one LFO with a delayed onset. The plugin ships for Mac, Windows and Linux (VST3, AU, AAX, CLAP, LV2) and iOS (AUv3), at an introductory $39 for desktop (regular $49 from September 15) and $4.99 on iOS, no dongle, no subscription.

But Audio Damage is careful about the word "emulation." The company says it built the voice architecture from the ground up rather than circuit-modeling any single unit, calling AD-202 its own take on that class of monosynth, not a literal clone of Roland's 1983 machine.

Why does eight-voice polyphony change the equation?

The original MC-202 could only ever play one note. That limitation isn't incidental, it's the reason the machine sounds the way it does: every acid line built on it is a single, gliding, resonant voice fighting with itself, the classic squelch coming from portamento sliding one oscillator between notes. AD-202 breaks that constraint open with eight-voice polyphony, plus per-voice analog drift so stacked notes don't sound perfectly identical. That turns a mono bass tool into something that can hold pads, chords and layered lines, MPE support adds per-note pitch bend and pressure, and MTS-ESP brings microtonal tuning the hardware never had.

The character of a 202 or a 303 bassline lives in the mono glide, and playing chords through the same filter and envelope doesn't reproduce that.

For producers chasing an exact vintage acid line, that's a trade-off, not a straightforward upgrade. For deep and tech house producers who want that grainy ladder-filter tone as a chordal or layered instrument instead, it's the whole point.

What did Audio Damage actually change from the 1983 machine?

Beyond polyphony, AD-202 adds a post-VCA color section (pre-filter saturation, filter drive, distortion, tilt EQ) and portamento up to five seconds. What it drops is the MC-202's built-in step sequencer, the feature that made the original a self-contained synth-and-sequencer combo rather than just a sound source. AD-202 leans entirely on your DAW or an external MIDI/MPE controller for pattern and note data.