Module is in good shape and perfect working order. No box.

Module A-121-3 is functionally nearly identical to module . Only the distances between the controls and sockets are smaller and rubberized, small rotary knobs are used. Therefore the front panel width is only 4HP compared to 8HP of the A-121-2. In the first place it is planned for applications where only limited space is available. The only functional difference compared to the A-121-2 is the missing attenuator for the resonance CV input CQ.  

These are the most important features of the module:

  • voltage-controlled multi-mode filter with a cut-off slope of -12 dB / octave (idential to the filter of the but has been expanded by the voltage controlled resonance feature)
  • four simultaneous outputs are available, each with different characteristics: low-pass (LP), high-pass (HP), band-pass (BP) and notch (N)
  • manual control Frequ. for the cut-off frequency of the filter (the cut-off frequency determines the point at which the respective filter effect appears)
  • two inputs for frequency control by means of external control voltages (frequency modulation, e.g. by ADSR or LFO):
  • control voltage input CV1 without attenuator, about 1V/octave sensitivity
  • control voltage input CV2 with attenuator FCV2 for the adjustment of the modulation depth of input CV2
  • frequency range about 10Hz ... 20kHz
  • Manual control Q for the resonance of the filter
  • control voltage input CQ without attenuator for voltage control of the resonance
  • resonance up to self-oscillation, in which case the module will behave like a sine wave oscillator even without audio input signal
  • audio input In with attenuator Level for the adjustment of the filter input level (beyond about pos. 5 clipping/distortion occurs with typical A-100 audio levels)

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.

Listed2 months ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.learn more
Brand
Model
  • A-121-3 VCF 12db Multimode Filter
Categories

NOISEBUG

Pomona, CA, United States
Sales:9,819
Joined Reverb:2016

Reverb Gives

Your purchases help youth music programs get the gear they need to make music.

Carbon-Offset Shipping

Your purchases also help protect forests, including trees traditionally used to make instruments.

Oops, looks like you forgot something. Please check the fields highlighted in red.