My pair of Pioneer CDJ-500 still working

My pair of Pioneer CDJ-500 are still in my study and they are working well.
Saw a video today that the CDJ-500 was introduced in October 1994 but I think I bought them earlier than 1994...
They don't have vinyl mode, when cueing CDs, the sound you here is frame-by-frame, like "but but but but", "tick tick tick tick".

Photo here to share.



Pioneer DJ History Part One - The Evolution of the CDJ 

http://youtu.be/CgTdAdynUYo