Erica SynthsAcidBox III Desktop Polivoks VCF


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Erica Synths AcidBox III

The latest incarnation of the Erica Synths AcidBox mobilizes the core of the infamous Polivoks VCF, albeit in stereo and alongside an optimal feature set consisting of a unique overdrive circuit, syncable LFO, an envelope follower, and both manual and remote control over the filter cutoff.

The AcidBox was designed for use with a wide variety of audio sources, particularly guitars and line level sources. Lending to this orientation is a configurable control input that lets users connects a bypass footswitch or expression pedal, adjustable input gain, and an LFO sync trigger. All of this and more makes the AcidBox III ideal for both the studio and the stage.

AcidBox III 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
  • 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
  • Dimensions: 185x140x55mm
Product Demo Videos
Erica Synths Acidbox III Stereo Polivoks Filter
Erica Synths Acidbox III is a stereo Polivoks Filter in a box with both bandpass and lowpass modes and CV control over filter cutoff. There is a tap tempo LFO with multiple clock divisions and waveshapes as well as an envelope follower. The input level can be adjusted for overdriving the filter and the cutoff knob is huge for having fun with filter sweeps. In this video a Ants! Modular Synth sequenced by a Korg SQ-1 is the input to the Acidbox.
Erica Synths AcidBox III Desktop Polivoks VCF Reviews
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