1973 VCF

The ES07 is a 2-pole state-variable filter with 12dB/octave slopes on the LOWPASS and HIGHPASS outputs and a 6dB/octave slope on the BANDPASS output.

The ES07 does not self oscillate.

By turning up the "Q" resonance control, the filter can used as a percussion sound generator - xylophone, wood block, drum, bell, gong, vibraphone.

It does not have a 1V/Octave input but does have a scalable CV input, so can be adjusted to track to play tunes, etc.

See the Patch Of The Week below from Doug for a comparison with the original 1973 VCF.

This is an updated version of the ES07 which now includes the [AUDIO - SUB-SONIC] switch as a panel mount option.


  • 20 mA +12V
  • 10 mA -12V
  • 0 mA 5V
  • 60 mm deep

Available as an assembled Module and as a DIY project.

This Module is currently available.

$224 Price in €
12 HP Filter
submitted Jan 10th 2016, 06:45 by WidgetOz | last Change Feb 14th 2018, 01:53 by Lugia

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