MXR M-113 Digital Delay

As seen in this video, Eric Johnson runs a rack-mount MXR Digital Delay that feeds into one of his Marshall Amplifiers. According to Johnson, the Delay unit "feeds the top cabinet for dirty rhythm," he says at (2:20).

In 1977 band replaced their Binson Echorec 2 units with rackmount digital devices by MXR. MXR Digital Delays were usualy shipped with one 320 ms delay chip while the expansion model - containing four chips - produced up to 1.28 seconds of delay. I don't know about Waters but Gilmour's rig, for instance, included two MXR Digital Delay units and two upgraded MXR Digital Delay System II units working simultaneously, each with the different tap.

David's MXR Digital Delay rack mount is seen in this photograph from the '70's. "We also have an old MXR DDL digital delay unit built into a rack unit. It has a digital readout, but it's really nowhere close to being accurate. Dave likes it because even though it's a digital unit, it still sounds a little dirty, like a tape unit." - [Phil Taylor, David Gilmour's guitar tech.](http://www.pink-floyd.org/artint/dagear.htm)

"MXR Digital delay: Apparently used in a live show at the Palladium to replace the EC-3 that was "rather noisy"".

The MXR Digital Delay can (quickly) be seen as the camera pans up at 6:46 in this video with *Future Music Magazine*.

I've got an MXR Digital Delay, which I put through one amp, leaving the other amp clean [...]

can be seen at 02:06