Free State FX Modules

Resonant Equalizer

Free State FX Resonant Equalizer Front

The Resonant Equalizer is designed to recreate the 'Resonator' section from the famous Moog Polymoog synthesizer. It is typically used towards the end of a patch to sweeten harmonically relevant frequencies in the audio signal.


  • Four modes of operation: Lowpass, Bandpass, Notch, and Highpass
  • Independent Control of Dry Level and Resonator Level
  • Clip LED Indicator for the Resonator Level
  • Three Independent Filters
  • Gain, Cutoff Frequency, and Emphasis Level for Each Filter
  • Two Audio Inputs
  • Rogan Alpha Series Knobs
  • Switchcraft 1/4" jacks
  • 1% Resistors (throughout) and 5% Capacitors (in filter section) for a high level of matching between units
  • Fully Assembled in the USA
  • Current Consumption: 15V = 21mA; -15V = 19 mA; 5V = n/a
$ 449.00