According to Woodytone, Dave Murray uses the MXR Distortion + (Script Logo) pedal, as detailed in their article on early Iron Maiden gear.

Foto subida por Gustavo a su Facebook en 2009. "Autitos" a la izquierda del Small Stone se encuentra el Distortion +, el cual seguramente es la versión vintage debido al color que tiene.

'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.'

Jerry Garcia used the MXR Distortion + (Script Logo) for enhancing his leads and gain. This information is detailed in the "Dead Gear" section on Epicdimensions, which also mentions other effects in his setup, including the MXR Analog Delay, MXR Phase 100 (Script Logo), Mutron III envelope filter, and Mutron Octave Divider.

Mentioned in the February 1977 Guitar Player interview "Larry Carlton" by Steven Rosen.

The guitar is always wide open (volume and tones on 10) and controlled with a Sho-Bud pedal, while other pedals, used primarily for 'live' shows, are an MXR distortion unit (heard on 'Spiral', a track from the Crusaders' LP Those Southern Knights), and an Electro-Harmonix Small Stone phaser (on 'Keep That Same Old Feeling', one of the band's latest singles). The Sho-Bud is employed for rhythm shadings and set all the way down to give the guitarist his solo peak.

Canton also has a complete line of phasers, compressors, and fuzzes, but uses them only when a song calls for a specific effect (as on 'Spiral', where the MXR is barely turned on to blend with the sound of the amp). When devices are used, Larry changes his amp settings to compensate for the loss in highs.

Hamilton used this pedal in the late 90's.

Masayoshi Takanaka is known to use the MXR MX-104 Distortion + in his studio recording setup from around 1979-1980. In an interview, Takanaka mentioned:

"I use a lot of effects. To list them in order: From MXR, I use the Dyna Comp, Distortion, and... what's it called that auto-wah type of effect."

This information was provided by user EJxcix on Reddit and takanaka_vibes on Instagram, along with visual proof of the setup.

Can be seen on Joesph's pedalboard during the KEXP live session

"MXR Distortion Plus" - Guitar.com on Amir Derakh, Orgy, 2007 https://guitar.com/rig-diagrams/rig-diagram-amir-derakh-orgy-2007/

" The MXR GOLDFACE distortion pedal

KATHLEEN: I have no idea why I bought this thing except that I remembered Billy from Bikini Kill buying one once so when I was looking for a distortion pedal it was the first thing that caught my eye. I buy the vintage version of this pedal which I think sounds way better than the reissue, but to be truthful they are all so different from each other even though they look the same, so if you are gonna buy one it is best to try it out first. I guess I shouldn't say that cuz I really never test them out myself since there is always some guy in the "try out" room at the guitar store playing Iron Butterfly songs really really loud and I would honestly rather have one of my arms broken that have to walk in there. (Are these guys on the pay roll of the shops? Are they spawned on a secret guitar asshole island? Why won't they leave?) I usually just check out the store return policy on used stuff before I buy it and then bring it back if it sucks. The pedals cost around $90-125." ~ LeTigre World

I recall having an MXR Distortion + [during my time with Parliament-Funkadelic]

Mentioned as an "XVR distortion unit" on page 11 of the August 1975 issue of Beat Instrumental.

Back, though to equipment. Being almost a traditionalist in his choice of axes, Eric is staying put with his favourite amplifiers, Marshall.

"I'm using a 50 watt Marshall on full and I use an XVR distortion unit and an XVR phase module through it. I think the Marshall's my favourite amp. I've tried solid -states but, although they are very, very loud, they're just not right for me. I'm never really satisfied with my sound because I'd like to be able to get a Carlos Santana sound — you know, feedback and sustain at really low volume, or maybe a Jeff Beck sound. That's a matter of technique as much as anything, and I know I can't quite get it."