For sale is a rare vintage AMS Advanced Music Systems Model DMX15-80 S Computer Controlled Stereo Digital Delay. This one is in good shape for its age with some cosmetic wear. Tested 100% fully functional. It's a true stereo unit (and not a broadcast or mono unit as you might see in other listings). It's been recently serviced as needed by Beamish, which is one of the last places around specializing in servicing these. They gave the unit everything it would need to ensure smooth trouble free operation (with a big cost in repairs) so you won't have any issues. Beamish includes a 1-year warranty on the service work they performed. This one has upgraded time of 6.4s delay. Classic effect unit, nothing else sounds quite as cool as these old AMS rack effects.