AI017 Low Pass Gate – Full DIY Kit

£47.00 (Excl. VAT)

Buchla inspired Low Pass Gate with VCA mode

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The AI017 Low Pass Gate can be used as a Voltage Controlled Filter, Voltage controlled Amplifier, or both at once. This module is an updated variation of the classic Buchla 200 Series Low Pass Gate, updated with a tunable resonance circuit, and a Depth control. The module circuit uses Vactrols for control voltage, allowing for classic “ringing” decay and “bongo” effects.

The Depth control compensates the vactrols inability to drop lower than 100 ohms, which can allow audio bleed on traditional Low Pass Gates. The effect can be switched on or off, as depth will attenuate the classic ringing and bongo effect. This gives the user an easy way to go from a “vintage” Low Pass Gate to a “modern” Low Pass Gate with a flick of the switch. A rear trimmer also allows for tuning of the resonance.

AI017 – Build Guide | User Manual


  • Width: 8HP
  • Depth: 40mm
  • Power consumption: +12v, 19mA. -12v, 17mA.



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