AMS DMX 2000
A 15-bit digital delay and pitch shifter unit produced by Advanced Music Systems, part of the pioneering DMX series introduced in 1978.
Overview
The AMS DMX 2000 is a model designation associated with the AMS DMX 15-80S, a digital delay and pitch shifter manufactured by Advanced Music Systems from 1979 to 1985. It features two independent delay channels and delivers musical, 'de-glitched' pitch shifting, a hallmark of the DMX series. The unit was used on hundreds of classic recordings and is heard across albums by Joy Division, Nirvana, Brian Eno, Prince, Radiohead, and Phil Collins.
Specifications
| Product Type | digital delay and pitch shifter |
| Bit Depth | 15-bit |
| Delay Time | 0 to 2000 ms |
| Channels | two independent delay channels |
| Voltage | 220/240v |
| Inputs | 2 inputs |
| Outputs | 2 outputs |
| Controls | Delay, Feedback, Mix |
| Dimensions | 19" rackmount, 1U |
Design
The AMS DMX 2000 is a 19" 1U rackmount unit containing a processor card, a Deglitch card, and a switch mode supply. It includes NVRAM for data retention and a CHB regen pot. The design supports de-glitched pitch shifting and requires routine maintenance to prevent NVRAM battery leakage.
Context
The AMS DMX series was the world's first 15-bit digital delay and pitch shifter. Introduced in 1978, it became a studio staple throughout the 1980s and helped define the era's sonic character. The series includes the DMX 15-75, DMX 15-80, 15-80S, 15R, and RMX-16.
Market
The AMS DMX 2000 sells for approximately £2,600 (ex. VAT) as of current listings. Units require regular power cycling—minimum one hour every six months—and NVRAM battery replacement every five years to prevent damage to the processor card.
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