Macbeth X-Series Dual SV Filter PROTOTYPE

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"This module does not have the metal faceplate from the production version. The faceplate is some kind of fibre board or blank PCB, with a printed sticky plastic (or paper) cover. (Please see photos)

My guess is it probably differs very slightly from the production version in terms of the circuit/sound too, but I cannot confirm that as I don't have a production version to compare. CONFIRMED see below.

Sound is okay, quite flexible, but not exactly what I'm looking for.

Made in Scotland.

UPDATE 07/11/2016: Ken Macbeth says this is a prototype, home-made board, and the factory unit circuits are different compared to this one.

IMPORTANT: Ken DOES NOT support this module if it fails to function!!

Ken Macbeth's original product blurb: 'I was asked to design a filter with a difference to compliment the X-Series 'Backend' Filter (42hp) but in a smaller space of the same dimensions as the 21hp X-Series Single Oscillator which was a good challenge! Well this is what I've produced- a dual State Variable Filter with a remarkable 'organic' sound and great functionality. The X-series Dual SV Filter is a stereo 12dB/Octave design featuring Low Pass, Band Pass and High Pass responses.

Both sections are manually controlled by a master frequency control- but they can also be controlled together or independently by one 1V/Octave input socket. The 'left' side CV input is normalized to the 'right' side CV input jack socket. Should two different control voltages be applied to the two CV inputs for either side- each filter will react completely separately from each other- and that's where the stereo fun begins!'"