In an Instagram story posted by Dominic Fike on July 23 during his "Don't Stare at The Sun" tour, his pedalboard can be seen equipped with the MXR Phase 90 (Script Logo). This indicates its use during live performances.

It can be seen at 27:43 into the video.

In this photo, you can see Brian has a Phase 90 on his pedalboard.

Here you can see Bruce Kulick playing Kiss song "Jungle" on a vintage Fender '65 Jazz Bass with sunburst finish. Bruce mentions using a “vintage“ MXR Phase 90 (Script logo) pedal at the 6:26 timestamp. (Bruce originally used a similar bass by ESP).

In this photo of Roosevelt performing at KEXP, his pedalboard is visible, revealing the MXR Phase 90.

When asked how Scott Gorham achieved the 'Thin Lizzy' tone in a Vintage Guitar interview his response was >'a Les Paul, Marshall stack and MXR Phase 90'<

Jim Ward was observed using the MXR Phase 90 (Script Logo) phaser effects pedal during a live performance at Club Dada in Dallas, Texas on March 11, 2024, as evidenced by a photograph from the event.

Mentioned in this May 2006 Keyboard interview with Scott Healy.

SH: So what’s the secret formula for your trademark phasey Rhodes sound?

DF: The trademark is, first you try and find those little orange boxes, I forget what they’re called, and if you can’t find the little orange boxes [MXR Phase 90s] from the late sixties, and if you can’t get them you go get the big orange boxes from a slightly later period, and—

SH: Phase shifters—

DF: –they’re just phasers, that’s all they do, and you use two of them, so they’re stereo, and you keep ‘em on a slow pace, and that’s about it.

SH: Sometimes the effect is like you’ve got them on a trigger pedal–

DF: It’s all random.

SH: That’s cool. And on some of the tunes, obviously, the Rhodes is straight.

DF: Right. I like the phasers, because they even out the signal, for some tunes, especially if you want it to sound a little more like an organ tone, or you need to sustain things a certain way, with a kind of compression, they’re useful, it makes it less boring, because you’re hearing some modulation or something. It’s a nice sound.

SH: So the stereo thing, with the two of them, that’s the secret, ‘cuz you can hear it with the headphones for sure.

DF: Yeah, they modulate with each other—

SH: They’re not exactly locked in together, so you don’t get that predictable back and forth sweep.

DF: And it’s random, so it’s not like some kind of synthesizer. On the attack sometimes you get some random nice little whops.

SH: That’s why I though there might some kind of a wa pedal—

DF: No, no, it’s more often than not you’ll get some kind of interesting thing happen on the attack.

SH: That’s really cool.

DF: You gotta kind of whop the keyboard, too.

The photo is Tom's pedal board used during the gig with dry cleaning at the chapel in San Francisco on November 11 2021

In the 2025 Rig Rundown by Premier Guitar, bassist David Wm. Sims is shown using the MXR Phase 90 (Script Logo) pedal, as detailed in their video tour of The Jesus Lizard's gear.

The MXR Phase 90 appears on his pedalboard in this video at 2:39

"So there's no pedal board at all for you on stage?

"Nothing. In the studio, for instance, this new EP, I bust out a few things in the studio. I've got an MXR Phase-90, and I've got a little Crybaby on there. That's about it, but live, nothing. I go naked, as they say [laughs]. I don't use anything, just straight on get up and play."