Erica Synths Acidbox III brings you the core of the famous Polivoks VCF in stereo version with a unique audio signal overdrive circuit, built in LFO and envelope follower in a compact, full aluminium case. Features Polivoks core stereo lowpass/bandpass VCF with the original programmable opamps Unique audio overdrive circuit Versatile syncable LFO with 8 waveforms Tap tempo button Envelope follower with modulation level attenuverter Master modulation control Manual and CV control over cutoff frequency Configurable control input for footswitch, expression pedal and external LFO/cutoff control Adjustable input gain