“Yamaha DX7s
Been in the loft for ages, used to gig with it, plugged it in and strange message on the screen and no sound!
Have had the voice cartridge checked and that works..
The “S” version is effectively DX7 version 2, has improved MIDI , new digital to analogue converter, better programming interface, stereo effects and fractional scaling!” Click here to visit listing on eBay