Stacks Image 34
Stacks Image 29
'Amelia' is an envelope/function generator with an unusual ADBR (attack/decay/break/release) configuration. CV control of all envelope times and of the break level 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/release sections can be independently and continuously adjusted from exponential, through linear, to logarithmic.

Amelia was developed with use with sequencers particularly in mind, where often you only have a trigger output, not a gate of adjustable length. It allows you to create complex and flexible envelope shapes from that simple trigger signal that can be fully modulated under voltage control.

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.


Amelia's specifications are as follows:
  • Panel width: 8HP
  • Module depth: 42mm
  • Current draw: 33mA on the +12V rail, 33mA on the -12V rail
  • Inputs:
    • Gate input
    • CV inputs for attack, decay, breakpoint, and release
  • Outputs:
    • Envelope output

For more detail, please see the user manual.
Explore the Expert Sleepers analogue modules:

Pricing & Availablity

Amelia 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.

We use cookies and other tracking technologies to improve your experience on this site. We also link to content on external websites which may also gather information about you when you visit them. This is all perfectly normal. You can find out more about cookies (including how to turn them off) here and you can read our Privacy Policy here.