Pixie Attache
The EDP WASP Revisited

The original EDP WASP

The Mk 1 Pixie

The current Mk2 Pixie Attache

The Wasp was a quirky little synthesizer that, despite its toyish look was quite capable of funky analog types of sounds.
Under the hood the Wasp was a real surprise! It was actually a very early DIGITAL synth that also happens to sound great!
With ANALOG filters, envelopes and controls, the Wasp offered flexible and traditional synthesis of cool bass,
synth, and other useful monophonic sounds.
It was used by 808 State, Dave Holmes, Vince Clarke, WhiteHouse and Add N to (X).
It's designer, Chris Hugget, also designed the Oxford Synthesizer Company's OSCar Synthesizer.

More details on this item can be found at www.vintagesynth.com/misc/edp_wasp.shtml

Schematics of the WASP are currently being re-generated and are presented below.
Please note that copyright ownership of the original schematics belong to Chris Hugget.

The Pixie Attache is a revisit of the WASP that keeps the salient features of the WASP but replaces the keyboard circuitry
with a MIDI interface to provide a more flexible product, giving the user access to a wide
range of MIDI controllers including keyboards, laptop/PCs and iPad's.
To help improve the stability of the design, the two 555-based VCOs and associated decoding ciruitry
have been replaced with a dual-digital oscillator built on the Mitsubishi M16C.
The Pixie expands the original WASP by adding the following extra functions:-

              1. Additional waveshapes on both DCO's (Triangle, Sine and Modulated Square)
              2. 2nd WASP Filter
              3. Low-Pass Filter
              4. Ring Modulator
              5. 4-channel pre-FilterMixer
              6. 4-channel pre-Output Mixer .

    Original WASP schematics (redrawn)

Bill of Materials (Mk1) Bill of Materials (Mk2)

Build Guide (Mk1) Build Guide (Mk2)

User Guide

Email:  elby-designs@bigpond.com
Copyright 2000. All rights reserved.     Revised: February 27, 2020