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 
The Acidbox III has adjustable input gain, therefore it works with various sound sources – guitars, units with line level signals (synthesizers, grooveboxes, etc.) and modular synths. Configurable control input allows you to connect a bypass footswitch, expression pedal, external cutoff control voltage source and LFO synchronization trigger. This makes the Acidbox an ideal companion in almost every production or live performance setup.
Technical specifications:
Input signal level
up to 20V ptp
Input signal amplification
up to +20dB
Modulation CV level
up to 20Vptp
LFO Synchronization trigger level
0-+5V 
Power supply: universal mains adapter 
110-220V
Mass
0,7kg
Dimensions
185x140x55mm