As part of his 1988 Soldano/Cornish Guitar Routing System, Eric Clapton used the Furman PL-8 Power Conditioner and Light Module, a SAMSON UR-5D UHF wireless receiver, a SAMSON BR-3 VHF receiver, a Drawmer 1960 tube compressor, a YAMAHA SPX-90 multi-effect processor, a Dyno-My-Piano CS-5 Tri-Stereo Chorus, a TC Electronics 2290 dynamic digital delay, a DYNACORD CLS 222 Leslie simulator, a YAMAHA GEP 50 multi-effect processor, a Roland SDE-3000 digital delay as well as the TC1210 spatial expander with VHS/UHF aerial unit at rear.

From the effects send on the Boogie, I go into a T.C. Electronic 2290 and a Yamaha GEP50. I've got a Roland GP8, too -- those guitar processors are okay if you use them together with another effect. And I've got the wonderful Eventide Harmonizer, which I use for some of the expansive stereo choruses. I haven't used my Roland GR-50 guitar synthesizer onstage yet, but I'm planning to. The controller is a GK-2.

In a user-uploaded photo of Kevin Shields' rig, the Yamaha GEP-50 Guitar Effects Processor is visible. The photo suggests the use of programs 61, 56, and 77, indicating Shields' customization and application of this gear.

According to Guitar Geek's rig diagram, Butcher uses the Yamaha GEP-50 processor.

Peter Mengede uses the Yamaha GEP-50 Guitar Effects Processor, set to "Heavy Metal," to capture the early sound of Helmet, as noted by Guitar Lessons Brisbane.

"For the rack system I use a Furman PL-8E Series II power supply, the Korg DTR-1 tuner, DBX 166XS compressor, a Digitech IPS 33B like Joe Satriani used, a Yamaha GEP 50, like Clapton used as well as a Dynacord CLS 222 and a Roland SDE-1000 Delay unit."