Doepfer A-121-2 (12dB Multimode Filter)


The concept of a multimode filter with individual outputs, voltage controllable resonance and a similar name is what this module has in common with the old A-121. But the core is an different one, though, as instead the old CEM3320 circuit the filter known from the desktop synthesizer Dark Energy 2 is used.



  • frequency range: 10Hz to more than 20kHz
  • level control at the audio input
  • two cutoff CV inputs: 1x 1V/octave (FCV1), 1x with attenautor (FCV2)
  • resonance (Q) is voltage controllable; 1x CV input with attenuator
  • oscillates at high Q settings
  • individual outputs for four filter types: low pass, high pass, band pass, notch


audio input, two cutoff CV inputs, one resonance CV input
filter outputs: low pass, hihg pass, band pass, notch


3U Eurorack module, 8 HP wide, 50mm deep
current draw: 40mA at +12V and 40mA at -12V

0.2 kg
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€ 19% VAT excl. €100.00 € 19% VAT incl. €119.00
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