ADDAC601 – VC Fixed Filterbank


Out of stock

SKU: ADDAC_.601 Maker:


The ADDAC601 Analog Filterbank will have you shaping the spectrum of your sound immediately.

With its 8 fixed frequencies, this very special filterbank has two additional features that you won’t find anywhere else. Each of the 8 band volumes can be controlled through a linear high performance VCA, which adds great dynamics and new abilities to the art of filtering. Additionally this module also doubles as an envelope follower, with a dedicated CV output per band.

It features numerous output options: you can select between individual bands, the full processed sound, a wet/dry signal and even choose between odd or even frequencies.

Plus you can add up to two different signals, which are mixed internally by the ADDAC601 inputs.


2 audio inputs (audio 1 includes attenuator knob)
Wet/Dry mix knob

8 Independent Bands, each featuring:

  • Linear high performance VCA with attenuator/initial knob
  • On/Off Switch (defines if band is routed to the Master Outputs)
  • Envelope Follower CV Output
  • Post VCA Audio Output
  • Monitor LED

Main Outputs:

  • 1 Wet output
  • 1 Wet/Dry output
  • 1 Odd frequencies
  • 1 Even frequencies

Band distribution:
50 Hz / 110Hz / 220Hz / 500Hz / 1.1kHz / 2.2kHz / 5.2kHz / 11 kHz


  • Format: Eurorack
  • Width: 20 HP
  • Depth: 5.5 cm

Control Voltage I/O:

  • CV inputs: ± 5v
  • CV outputs: 0 – 10v


Compatible with +-12v and +-15v power supplies
  • Max current: 250mA
  • Bus Board Cable: 8 × 2 IDC (Doepfer style) connector