On the rack (lower left of the picture), the Lexicon Prime Time M93 can be seen.

Used for the solo guitar on "Icky Thump", as stated by by recording and mixing engineer Joe Chiccarelli in this October 2007 Sound on Sound interview.

• Solo guitar: Lexicon Prime Time, room ambience, punch-ins

“I widened the guitar a little because it was a mono track. So I put a short delay on it with the Prime Time and also blended some room ambience back in. The solo guitar sounds deliberately very much like the Univox. The idea was to make people go ‘What is going on? Is that a guitar or a synth?’ Part of the effect was achieved during recording, when Jack asked me to punch in and out as he was playing, so that bits of the solo were clipped, making the notes sound more synthetic. Jack was very specific about how short he wanted the phrases. At first I was puzzled, but as always I trusted him, and sure enough, he was right, it was a really clever effect.”

The lack of specification suggests the original M93.

At 0:47-0:52 seconds you can see a Lexicon Prime Time Digital Delay model 93 sitting in one of his racks with a Roland SDD-320 Dimension D and what looks to be another Lexicon effects unit (maybe a reverb or multi-effects) above it.

Susan Rogers saids in a interview that Prince was reluctant of using new gear once he had what he liked; then she gives a list of what gear he used adding the he loved a Lexicon Prime-Time digital delay

Per this interview in a 1981 issue of Keyboard:

Since I'm normally working in studios I'm liable to use two or three echoes at once. For instance, the Roland, and then a Lexicon Prime Time, and then maybe a long digital reverb as well, a Lexicon 224 or something like that, or the plate reverb or whatever they have in the studio.

can be seen at 0:38 in the video

Amps: Four pre-CBS Fender Bassman amps, ca. 1958-1962; two Peavey Vintage amps (imitation Bassmans) -- one of each is used onstage under the drum riser. Also: a prime time digital delay and harmonizer and an MXR distortion box. The Fender Esquire is modified with a battery operated impedence transformer for long cable lengths. Information supplied by Mike Batlan, who also notes that there is an asterisk in front of the Esquire's serial number, indicating that is was a factory reject, probably originally sold as a reject.

Pat has used the Lexicon Prime Time since the late 70's to achieve his signature sound. He uses two of them, with slightly different delay settings, and pans them hard left and right of his stage position so he is enveloped in the sound.

From Pat's website: The output of the Digitech 2101 is run into 2 lexicon prime-time digital delay lines, one on my left at 14 ms delay, one one my right at 26 ms delay. each delay has a very slight "pitch bend" controlled by the VCO (sine wave) inside the prime-time. this is what gives it the "chorused" thing

In this instagram post the Lexicon Prime Time Digital Delay Model 93 is shown

At 5:55 Olafur talks about his Lexicon Prime time delay stating he was introduced to it by the soundtoys plugin little primal tap.

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In a video interview on Produce Like A Pro, it's revealed that Tommy Lee has two Lexicon M93 Prime Time Digital Delay Processors in his studio, although they remain unused.