READ CAREFULLY for condition - Unit is still in "working" condition with some caveats.  Audio output will periodically cut out, and can only be restored with a full power cycle of the keyboard.  Additionally, the top 3 keys do not produce sound, and there is some inconsistency in the output of keys throughout the operating keys.  Finally, periodically while playing, a drum sound will randomly accompany whatever specific sound is in use.  So, it's not without its issues, and probably would only be useful to a repairer/restorer.  I am the second owner... it may have seen minimal "live" use in its first couple of years, but since mid-90's has never left my studio desk (smoke free).