AMS DMX 15-80

The AMS DMX 15-80 is a rack-mounted 15-bit digital delay/harmonizer, released by Advanced Music Systems in 1978. It has a mono input and stereo output. Not to be confused with the more well-known DMX 15-80S, which had stereo inputs and outputs.

Producer Nigel Gray had an AMS DMX 15-80 digital delay at Surrey Sound Studios. He used it a lot, especially on studio work with The Police for occasionally enhancing guitars and vocals.

Stewart Copeland's AMS DMX 15-80
Stewart Copeland had an AMS DMX 15-80 delay unit amongst his effects units on tour with The Police in the early 1980s. The Frejus concert on 28 August 1980 was the first time it appeared in his touring rig.

He intended the AMS as a backup to the Deltalab DL-4 as he preferred using a delay that was adjustable (i.e. with knobs) - he was only able to do this with the latter.

By the time of the Synchronicity tour, the AMS was retired from touring use and was replaced by a Simmons drum module. It was later part of his outboard gear at The Worried Rabbit.