Lowpass VCF with vacuum tube drive

24dB/12dB Fusion VCF is our take on the four pole lowpass filters. Each side of double triode drives signal between 2nd and 3rd stage of the filter, while germanium diodes are used to limit output signal.

Result ultimately deep sounding VCF with unique character. Ingenious resonance volume compensation circuit and filter slope selection make this filter ideal for live performances. Bonus feature – 3 input mixer with dedicated mixer output. Try patching the MIX OUT into one of mixer inputs, increase input level until the mixer goes into self-oscillation and use the filter to alter the drone, you have! The Fusion VCF is an instrument on it’s own!

◾ 4 pole lowpass resonant VCF with tube drive between stages
◾ Three input signal mixer
◾ Selectable 24db/12dB filter slope
◾ Signal drop compensation, when resonance is increased
◾ Germanium diode based output signal limiter


  • 30 mA +12V
  • 160 mA -12V
  • ? mA 5V
  • 35 mm deep
  • Ø 4.50 (4 Votes) Average Rating

This Module is currently available.

$313 Price in €
14 HP FilterTube
submitted Jan 9th 2017, 15:43 by EricaSynths | last Change Jul 12th 2017, 12:56 by EricaSynths
Specs are approved by the manufacturer

11 Users are observing this