I found out my mate, Jack Ruston, has used it's twin at this studio in London http://stateofthearkstudios.com/

He said about it

"Nothing sounds like those things! I've made quite a lot of records on the one at the Ark and for all it's quirks and idiosyncratic frustrations, it really does have 'a sound' that does not exist in eg the Chandler modules. And then when you look underneath at all the crazy wiring and components you kind of see why. Yes it's noisy, and sometimes picks ups all kinds of strange interference etc but there is definitely a reason why they're so highly sought after. It's not just the heritage. Mike Hedges has owned that one (the one for sale) for many years."

Here's a web page with some info on him and a pic of him showing the console in the background. http://www.record-producers.com/clients/mike-hedges/