Megadeth uses the Digitech GSP 1101 Multi Effects Processor as a preamp. At (3:29) Megadeth’s guitar player Chris Broderick says, “The pre-amp, I think that's also done just for simplicity and ease, so we can get a diverse set of tones but still keep it simple. We don't need a ton of different amps breaking down night after night.”

Glenn Tipton uses the DigiTech GSP1101 Multi-Effects Preamp & Processor, as detailed on his official website's equipment list.

In the Premier Guitar "Rig Rundown" video, Michael Amott of Arch Enemy discusses using the DigiTech GSP1101 Multi-Effects Preamp & Processor for live performances.

Oct 16, 2008

What gear did you use for the regular guitar sounds? Tipton: I used my Hamer GT Phantom— my favorite guitar—for a lot of the rhythm and lead tracks. It has EMG 81 pickups, wired at 18 volts, and an SG-type neck that’s slightly slimmer and not as round as a Stratocaster’s. I’ve got another GT Phantom with Seymour Duncan Livewire Metal LW-HMET pickups, too. I also used a guitar with a modified Hamer shape that was built by a guy named John Diggins. It has a more bassy sound. I like simple guitars, and I don’t like tone controls. The GT Phantom only has a 2-way switch, and I can get all the tones I want from that or the EQ on my rack. I also used a ’61 Fender Stratocaster on a couple of things for a cleaner sound. We plugged into a DigiTech GNX3 and a DigiTech GSP1101 preamp, but we also used other old preamps such as the Piranha, a ’76 Marshall JMP 50-watt head through a ’76 Marshall 4x12 loaded with Celestion greenbacks, a Marshall MG15DFX combo, and even little practice amps. There’s still nothing like the crisp edge of a miked-up sound. We used Shure SM57s and some ribbon mics and experimented with positioning two orthree mics at a time.

As Dan's guitar tech goes over his amp rigs, there is a clear shot of Dan's DigitTech GSP1101 at 3:27, and Dan's guitar tech says, "DigiTech, they've been great to Dan and they've been really good to me as well in that we get all the things we need."

Megadeth uses the Digitech GSP 1101 Multi Effects Processor as a preamp. At (3:29) Megadeth’s guitar player Chris Broderick says, “The pre-amp, I think that's also done just for simplicity and ease, so we can get a diverse set of tones but still keep it simple. We don't need a ton of different amps breaking down night after night.”

In a tweet made by Syu in July 29th of 2017, for the studio recording of Galneryus' new album, "Ultimate Sacrifice," it is shown that Syu uses rackmount units for cabinet impulses and amp sims.

Pictured here are Marshall JMP-1, VHT 2902 rackmount preamp, Two Notes Torpedo and Digitech GSP1101.

In the video titled "Deicide BLAME IT ON GOD March 4, 2012 - Montreal, QC" by hellawaits77NY, guitarist Jack Owen is seen using the DigiTech GSP1101 Multi-Effects Preamp & Processor on stage during a live performance with Deicide.

Bathory uses 2 DigiTech GSP1101 processors, one for backup, according to Guitar Geek's rig diagram.

In the YouTube video titled "HELLOWEEN: Sascha Gerstner taking you on a guitar rig tour," Michael Weikath is seen using the DigiTech GSP1101 Multi-Effects Preamp & Processor.

He shows the Digitech GSP1101 at around 0:59.

Used by the musician according to this GuitarGeek diagram.