Erica Synths ACIDBOX III – Desktop Instruments
Erica Synths ACIDBOX III distils the ferocious soul of the legendary Soviet Polivoks filter into a modern stereo desktop unit. Encased in durable aluminium, it allies authentic low-pass and band-pass tones with an aggressive overdrive stage. Therefore, creating everything from subtle warmth to corrosive acid sweeps.
Legendary Polivoks Sound in Stereo
At its heart lies the original Polivoks programmable op-amp topology, delivering unmistakably raw, screaming resonance. Moreover, switchable low-pass and band-pass modes process your signal in true stereo, bringing classic Eastern-bloc character to contemporary production.
Performance-Ready Modulation
An 8-waveform LFO—complete with tap-tempo and external trigger sync—drives animated filter motion. Meanwhile, the envelope follower translates dynamics into cutoff movement for expressive, touch-sensitive results. Additionally, a master modulation knob lets you command complexity with a single twist.
Ultimate Connectivity & Control
From guitars to modular synths, the adjustable input gain ensures optimal levels. The multifunction control jack welcomes a bypass footswitch, expression pedal, control voltage, or sync trigger. Thus, making ACIDBOX III a flexible centrepiece in studio rigs and live pedalboards alike.
- Polivoks core stereo low-pass/band-pass VCF
- Original programmable op-amps for authentic tone
- Analog overdrive circuit for additional grit
- 8-waveform LFO with tap-tempo & CV sync
- Envelope follower with modulation attenuverter
- Footswitch, expression pedal and external CV compatibility
- Adjustable input gain for guitar, line and modular levels
- Rugged 185 × 140 × 55 mm aluminium enclosure



