During Bonamassa's 2009 tour, he used a 2290 in his rack, which is seen at 3:38.

"Jonny Buckland has been using the TC Electronic 2290 Dynamic Digital Delay since 2003, as shown in a user-uploaded photo on Imgur."

At 1:20 of this private gear tour, Stephen Carpenter of Deftones shows off some of his gear, including a TC Electronic 2290 Dynamic Digital Delay.

Mentioned by FOH engineer Dan Green in this AudioTechnology magazine article about the Ghost Stories Tour.

AT: Could you run me through Chris Martin’s vocal chain?

DG: It starts with a Shure SM58 radio mic which he just loves singing into — the sound and the weight is just right for him. It goes to the Neve 1073 500 series module, and into a channel on the SD7. Then I just use a little bit of channel EQ to clean up the low end, to avoid pumping the compressor unnecessarily — the stage volume is blisteringly loud up there from PA spill, so there’s always going to be some low-end filtering. And then it goes into one of the Waves Puigchild 660 plug-ins. From there, into a Waves H EQ for some general EQ’ing. I really like that EQ for its visual feedback — the spectrum analyser is really handy to quickly pinpoint any frequencies that are poking out or not quite right. Then it finishes with the Waves C6 multiband compressor, which is the most incredible plug-in. I really rely on the C6 for the sound of Chris’s voice because when he’s getting into his low register, his voice is very bassy. But I find if I take some of those overpowering low frequencies out with a regular EQ, when he goes up to his falsetto voice, it sounds a bit thin. With the C6, because it’s a dynamic EQ, as soon as he hits his falsetto voice, all of those rich lows return. Effects-wise, I’ve got an old TC 2290 delay which is MIDI’d up to be part of my snapshot automation. I really like it because it’s hands-on. Saying that, after it’s set up the only control I touch is the tap tempo button. Finally, I have a Bricasti M7 reverb, which I prefer to a Lexicon for its character.

For Signals, Lifeson remarked "By that time I had a pretty comprehensive rack with two TC Electronic 2290s".

On XTS's website, they share photos of the rack gear they built for Bon Iver. TC Electronic 2290 can be seen on the rack.

This image from Pinterest shows Robert Fripp’s stage setup from 1999.

Foto compartida por la cuenta FlacoStereo en sus redes. "SODA STEREO | Gira presentación de Signos. Los históricos conciertos en el Coliseo Amauta. Lima, Perú, 19, 20 y 27 de Junio de 1987."

Aquí podemos ver a Gustavo con su Jackson Soloist y su Rack de entonces, en el cual el TC Electronic 2290 formaba parte. Recordemos que el 2290 fue usado en todas las giras posteriores de Soda, hasta el Último Concierto (1997). Después de eso solo fue usado dentro del estudio.

"His amps are new-model Gaillen-Kruegers that are rack-mounted with his effects, a T.C. Electronic 2290 and a Lexicon delay."

As listed in this 1990 interview on the Music Magazine Archive

On the website article, the third's picture legend states that TC Electronic 2290 Dynamic Digital Delay is part of Eminem's production equipment list.

According to Guitar Geek's rig diagram, Vivian uses a TC Electronic 2290 Dynamic Digital Delay, for "for delay, flanging, and panning."