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Elby Designs
CGS757 Bi-N-Tic Filter - 15HP

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Item: N12-1464

Availability: In stock

CGS757 Bi-N-Tic Filter - 15HP

Elby Designs CGS757 Bi-N-Tic Filter

The Elby Designs CGS757 Bi-N-Tic Filter is an amalgamation of a VCO and a switched capacitor filter. For those looking to add something odd and esoteric to their Eurorack modular setup, this module is a great start. 

Internally, a VCO controls two analog switches, selecting between two banks of eight capacitors for a multi-passband/comb filter effect. Additionally, there are two controls that affect the filter architecture, Damping and Bandwidth. The filter is so broad that not every combination of these two controls actually produces sound; however, this is a testament to the filter’s extremely wide and versatile range. 

After the signal processor, the VCO is routed to a binary counter for various division stages. The first three stages govern a pair of analog switches, while the rest are accessible via Feedback rotary switch. From there, the signal passes through a level knob before feeding back into the filter, resulting in synchronized excitation that is unique to the CGS757. This feature renders the module as a capable and unique oscillator with the ability to generate everything from complex waveforms to simple waveform sequences. Additionally, an Excite input allows for the routing of external signals that can be used to excite the filter.

CGS757 Bi-N-Tic Filter Features

Internal VCO:

  • Logarithimic FM (1V/Octave) Input
  • Linear FM Input
  • Sync Input
  • Coarse Tuning Knob
  • Fine Tuning Knob


  • Feedback switch: Selects excitation signal to be fedback in to the filter
  • 6 Feedback modes: Choose between 5 different divisions of the VCO frequency or an external signal
  • Feedback level knob
  • Damper control knob
  • Bandwidth control knob
  • Excite (X) input: Input external excitation signal to be used by the feedback section
  • Signal Input
  • Signal Output

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  • Eurorack Module
  • 15 HP Wide
  • +12V: 5 mA current draw
  • -12V: 5 mA current draw
  • 11.2 cm deep

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