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"This is a rare EMS Synthi A.
It was previously owned by Boz Burrell (Bad Comapny / King Crimson /etc.) and formed part of his collection of sythesisers that he used to hire out for studio use. The unit has been built into a sturdy wooden case to make it more sturdy than the original plastic briefcase, althought the lower part of teh plastic case is, I think, still attached. The wooden case itself is a bit scuffed as you can see but it does protect the unit well.

It was modified by EMS themselves with some of the standard mods that they did for several of their customers (see pictures).

It is in full working order. Boz gave it to me in 1990 when I was working for him as a sound engineer. I was helping to clear some of the older instruments he had and expressed an interest in this so he said I could have it. A few of teh capacitors have been replaced as has one of the power transistors which has been fitted with a heatsink.
I have used it myself in a couple of theatre productions in Germany and then we used it onstage for a while with my own band, That Legendary Wooden Lion.

If you have found this then you probably know what you are looking at but here is a list of features as provided by a previous seller of one of these.
3 Oscillators - all with a very wide range indeed
Filter section - including self oscillating resonance and Stereo Output Filter
64 pin matrix routing system - providing infinitely variable configurations, mod possibilities, routings, you name it. It is essentially a 3 Oscillator modular analogue synthesizer packed into a relatively tiny space, after all.
Ring Modulator
NOISE generator
Envelope Shaper - including Trapezoid
Push Button Trigger
Joystick - for cross modulation, bi-channel frequency control, panning, etc

Stereo Audio Out - including individual panning controls for each channel
Stereo Audio In
Stereo Phones output
Built in analogue reverb - really great, especially when it feeds back!
Built in stereo speakers
VU meter
Power cable - new, to replace the somewhat ailing old one; works perfectly"