You don't see THESE every day: http://cgi.ebay.co.uk/10pc-NEW-SSM2040-VCF-sequential-circuits- prophet-5- LTD_W0QQitemZ290230749972QQihZ019QQcategoryZ29552QQssPageNameZWDVWQQrdZ1 QQcmdZViewItem They're not cheap, but then, they wouldn't be, would they?! T.