A friend of mine modded the filter, I think it`s 24v instead of 12v, it certainly has more range and depth now.
It gives a lot more whoomph on the low end when you close down the filter.
Sale price, I`m not sure how much they go for, so I`m up for offers before I put it on ebay.
I`m selling it purely for the fact I just don`t use 303 sounds any more.