Kurt Cobain, the renowned guitarist and singer, explicitly mentioned owning and utilizing an Echoplex in an interview hosted by Nardwuar the Human Serviette, which took place on January 4, 1994. During this discussion, at a specific timestamp (1:01), Cobain can be heard talking about owning and using an Echoplex. This information is further substantiated by additional confirmation from a dedicated gear website: https://whatgear.com/pro/kurt-cobain/maestro-echoplex

Jimmy has been using the echoplex from the 1972 US tour to present-day. He has used 2 echoplexes over the years, one for his guitar, and one for his theremin.

In this photo EVH can clearly be seen with 2 Maestro EP3 Echoplex tape delays. Eddie was known to favor the EP3 for delay throughout the 70s and into the 80s.

By January 1976 Brian May was using 9 X AC30 amps on stage and the same 2 Echoplex EP3 Delays (see photo 9 X AC30 + EP3s) – this required an enlarged Routing System which I designed and built. Despite the large number of Vox AC30's then in use my system successfully eliminated all Ground Loop hum and noise.

Bruce used an EP-3 Echoplex unit during the Born to Run, Darkness tours and No Nukes concert. In the attached image from the No Nukes concert, you can see the Echoplex to the left of his Tweed amplifiers.

An EP-3 Echoplex would also be used during the recording of Nebraska, being applied as an effect to the original cassette tape.

George changes equipment like underwear. On his 2004 tour, I personally carried his Echoplex EP3 back to his tour bus after a gig. He also has an Echoplex tube EP2 that he has used.

In this video, the interviewer is lucky enough to be invited into Adrian Utley's private studio and compare his real Echoplex EP3 with the Jim Dunlop EP 101 EP3 preamp emulator. We also get Ade's thoughts on tape echo what to use live.

In this Facebook post Philip posted a picture of his pedalboard with the Maestro EP-3 Tape Echo.

Hancock recorded a demo discussing and using the Echoplex EP-3 tape delay.

All of the reverbs were a natural reverb from a hallway. So if there's ever a reverb, it's from a hallway. We just put a speaker in the hallway. We had an old (Echoplex) EP-3, so Eddie was using that, the producer was using that in the room. And when I would take a solo, if you ever hear Delays, it's literally him with an EP-3, moving it.

Guitarist Steve Cropper confirmed the use of the Maestro Echoplex EP-3 on some tracks of the "One More" album with Booker T, stating, "Back in the 70’s when we did that 'One More' album we were trying to get cute and I used an Echoplex on some of the Booker T songs. And everybody liked it, but I got tired of carrying it on the road." This information is sourced from an interview on Guy Guitars.

"Signal chain: Custom shop Tele > Lava and Planet Waves cables > Peterson Stomp Classic Strobe Tuner > Wampler Ego Compressor > Way Huge Pork Loin > Electro Harmonix Soul Food > MXR Echoplex Preamp to a Mooer Ana Echo to a Hardwire DL-8 >1967 Fender Pro Reverb with Weber Speakers. I also use an EP-3 Echoplex most nights!"