Used on The Great Southern Treadkill, as stated in this June 1996 Guitar World interview.

You've got a huge pile of effects boxes in the studio. Aside from the ones you've already mentioned, what other units did you use?

I hooked up my MXR Flanger/Doubler every once in a while and I used an E-Bow for a real smooth, continual sustain on "10's." I also used one of those little Korg Pandora boxes for a weird, fluttering sound on a short passage in "10's" and a Lexicon Vortex for the shimmering, breathy tone on my theme-like lead in "The Underground in America."

I also used a Roland AP-2 Phase II pedal, a KorgAX30G, a Digitech Whammy pedal, of course!, a Boss CE1 Chorus and a bunch of old Electro-Harmonix shit -- a Small Stone Phaser, an Electric Mistress Flanger/Filter Matrix, a Little Big Muff and a Soul Preacher Compressor/Sustainer. I also used a Korg G1 on the demos and some of that made it on the record. If l can't beat a part of the demo we'II just extract that small section and use it. The G1 is a bad-sounding little unit, man.

There's some wah on the record, too.

Shit, I almost forgot about that! I used my Vox Wah on the earlier part of the recording and then Jimmy Dunlop sent me one of his rack-mount units [Crybaby DCR-1SR]. Man, that thing is incredible, you can literally get whatever you want out of it. I also really like the idea that you can run a bunch of Wah pedals all over the place on stage with it so you're not always tied to that one spot. The only uncool thing about it is that Rex [Brown, bassist] will be dicking me off every night 'cause he'll be jumping on my pedals all the time!

In the article "John Petrucci: Too Many Guitars" on MusicPlayers.com by Scott Kahn, a photo of John Petrucci's rack setup features the Dunlop Cry Baby Wah DCR-1SR, highlighting its use in his gear collection.

Dave uses a Dunlop Crybaby Wah DCR-ISR, according to Guitar Geek's rig diagram.

According to this gear diagram, by Guitar Geek, Adrian Smith used a Dunlop Crybaby Wah DCR-ISR in 2006.

Exclusive gear from the private collection of Richard Z. Kruspe. Has been played live or in the studio with Rammstein and Emigrate. Every item comes with a certificate of authenticity, signed by Richard himself. Dunlop Crybaby DCR-1SR Custom Wah Rackmount, used by Richard Z. Kruspe of Rammstein & Emigrate in the studio & on tour. A signed document of authenticity is included.

Vivian uses a Dunlop DCR-1SR, according to Guitar Geek.

At 3:14 in this Premier Guitar rig rundown video, Dan Donegan's guitar tech says, "He's got a rack mounted Cry baby Wah that he uses a controller on his pedalboard to do different stuff on the fly." The Cry Baby Rack Module was mentioned by Donegan in the 2011 Guitar World interview.

As listed and seen in John's flight case from his Blue Murder era.

In this Rig Rundown by Premier Guitar, Dunlop Cry Baby Wah DCR-1SR can be seen at 3:15 in Clint's rack.

3:03 "And this is the best wah ever. You can put different wahs all over the stage."

Rob Caggiano of Anthrax has utilized the Dunlop Cry Baby Wah DCR-1SR, as documented on Angelfire.

The Dir En Grey website shows Kaoru using just four rack-mounted effects. The first effect is a rack-mounted Crybaby Wah.