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"It is an exact clone of the EDP Wasp synth, but more stable and with Midi interface so that it can be played from any midi keyboard...
Elby designs added a third VCF to the design as well as the two Wasp filters, however it is a known design fault with this pcb that this transistor ladder filter does not work as there is insufficient voltage over the ladder, so I have disconected this filter completely and replaced it with a Yusynth Diode Ladder filter which is an exact replica of the EMS VCS3 / Synthi A VCF - this gives a much different, more raw sound than the two Wasp Filters and a very worthwhile addition. I did try adding a differnt Moog style transistor ladder VCF but the VCS3 filter suited the Pixie much better IMHO. I have added a CGS dual rail power supply which provides the necessary +12v and -9v supply needed for the filter as well as a 5v supply for the Pixie synth.This is a quite complex build and a certain level of expertise will be needed to fit this to an enclosure..."
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