Its supposed base upon a bug fixed DX7 mk2. I just realised theres 2 of them - I assume the 150 is the later version... (?)
Link to Yamaha page on it:
http://www.yamaha.com/yamahavgn/CDA/...ODUCT,00.html#
Cost is about 200UKP here.
My VA synths do actually sound very different and are capable of quite different noises for bass - I guess what I needed wasnt a synthesised sound - or at least not a sound based on filtering
