The AMS DMX15R was designed as a digital reverb add-on for the AMS DMX 15-80S digital delay system. However, it is uncertain if this product was ever mass-produced, and if it was, it remains extremely rare. It is more likely that the AMS DMX15R was eventually developed into a standalone digital reverb unit (AMS RMX 16) that did not depend on the AMS DMX 15-80S to operate.
