Dan Donegan

As Dan Donegan's guitar tech goes over Dan's rack setup, he mentions that Dan uses a Randall RM4 Modular Tube Pre-Amp at 3:05.

Dan used Mesa amps before being endorsed by Randall. In this diagram of the guitar rig hes used in 2000, you can see a Mesa Triple Rectifier.

We can see two Egnater stacks in the background trhoughout the official "The Light" music video. For the most part, the stacks are not clearly visible in the video, until around 2:18 where we can clearly recorgnize the unique front of the Armageddon head. It is unclear if this amp has been used for the recording of the Immortalized album or for the song, but Dan Donegan surely own a couple of these amps.

Use of Egnater Armageddon is confirmed in the Music Radar rig rundown.

The main rig, the A rig I’m using here, I have a Bogner XTC 20th Anniversary head. I use that combined with an Egnater Armageddon head. With the Bogner and the Egnater I’m just giving [the sound engineer] a good blend upfront.

In the April 2003 interview with Donegan, his rig diagram is shown - Randall CY300 can be seen in the rig.

at 0:59, the picture shows dan with this amp

Talking about Dan Donegan's amp setup, Dan's guitar tech mentions his three Randall RT2/50s, at 7:05. He says, "We use one to power the ISO cabinet...It's as important as any of this system is having this ISO box, set aside...it's like being in the studio on tour."

Back in 2005, this used to be Dan's entire live rig (seen in the picture)

At 3:03 minute mark in Premier Guitar's Rig Rundown, Donegan's Randall MTS1086 signature module can be seen in his rack.

In this photo, which was posted by Donegan on his Twitter profile, the Kemper Profiler can be seen on the bottom of the rack. Kemper was briefly discussed in the Music Radar gear rundown.

I have a Kemper in the rack, too, which is another profiling amp, and is amazing, but it gives our front of house guy the options up front to take the blend of any three of those - the Bogner, the Egnater and Kemper - and whatever he is doing out front to make it sound the best. I think the rest of the guys in the band are getting a direct feed from the Kemper for their in-ears, which has been somewhat of a blessing because historically we have fought with those issues onstage, with our in-ears not getting a good enough clean mix, and I think getting a direct feed from the Kemper that’s been dialled in for us has definitely improved us. For David [Draiman], having to sing and hearing the key and being on pitch a lot more accurately, and not struggling from the tone, the Kemper is giving him such a clean signal. We have fought with [stage noise] over the years. The in-ears is what saved us. When we were trying to adapt and get used to it, it was a bit of struggle, when you are used to old-school, amps-as-loud-as- can-be. With floor monitors, me and John [Moyer, bass] are fighting over volume onstage and then David is struggling to even hear himself and then he’s blowing out his voice because me and John are blasting. Now our stage volume is so quiet. It’s great. We are having no live cabinets onstage which makes it a whole lot easier for David. We’re not getting any of the bleed through that.

At 3:22, the amp can be seen behind Dan when he's playing. He talks about this amplifier in the 2011 Guitar World interview.

So when we were making [2005’s] 10,000 Fists, a couple of their technicians came to the studio along with [producer] Johnny K and we really developed the amp there in the studio. We were taking what they had already built and expanding upon it, so it was really a combination between a Mesa/Boogie and a Bogner Ecstasy head. Those were two of my favorite heads I was using in the studio a lot. And we tried to get the best of both worlds, combining both tones. It was a great opportunity because we had a lot of smart, talented guys to help develop this and I got a great head out of it.

The image shows Dan Donegan using the Randall ISO12C 1x12 Isolation Cabinet as part of his setup.

you can see the amp on his rig in this tweet

at 4:19, the amp is behind him

at 0:59, you can see this cabinet

at 2:07, the amp can be seen

In a rig diagram from 2005, Dan Donegan is shown using a Mesa/Boogie 4x12 Cabinet.

at 1:10, this cabinet can be seen

at 1:10, this cabinet can be seen