From the mid 90's this excellent pro synth from Yamaha , the CS1x. Play in Multi or performance mode .... Four part voice layering.. Real time parameter changing .
Touch sensitive key bed .Excellent connectivity ,( except usb ).
There are two missing black knobs ( these are around 20 euro on line for a pack of 6)
Also three adjacent keys do not play a sound. These may just need the contacts cleaning or some replacement parts ..The most expensive replacement parts to cure this is 39euro..(. On the rare occasion that this part is needed ..).
If you are interested to own this classic from the 90's message me on 77047222.. There is a lot of info on line about this keyboard , including YouTube videos . Also for an idea of the value please see eBay . Then perhaps you would like to make me an offer ..Thanks