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'Aloysius' is an envelope with an unusual AHDW (attack/hold/decay/wait) configuration, sometimes referred to as a trapezoid generator. CV control of all envelope times is provided. The envelope can be set to auto-trigger, turning it into a complex voltage-controlled LFO.

The shape of the attack and decay sections can be independently and continuously adjusted from exponential, through linear, to logarithmic.

The module is constructed entirely from analogue parts and discrete logic. There is no microcontroller or digital-to-analogue conversion involved and therefore no quantization of voltage levels or of the response time.


Waveform magazine (issue 11) said

Aloysius and Amelia are good fun, very functional, flexible, and a nice change of pace. Slightly different than pretty much any other EG’s out there, they offer pinpoint control over almost every aspect of the shape, time, and length, stage of an envelope, and you can really create some unique envelope shapes and LFOs with both.

Read the full review here.


Aloysius's specifications are as follows:
  • Panel width: 8HP
  • Module depth: 42mm
  • Current draw: 43mA on the +12V rail, 25mA on the -12V rail
  • Inputs:
    • Gate input
    • CV inputs for attack, hold, decay, and wait
  • Outputs:
    • Envelope output

For more detail, please see the user manual.
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Pricing & Availablity

Aloysius is available now.

MSRP: UK £179 (inc VAT), US $185 (exclusive of sales tax), EU €169.50 (exclusive of VAT)

For purchasing links, please see where to buy.

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