Kerry King’s Signature Marshall JCM-800 Amps are shown at 7:35 in this video interview. He describes the amps saying “The one that this is based on is called the beast and I had it sent to Marshall to find out what was so great about it and see if anyone modded it over the years before I got it. The reason that head was so good, Marshall has parameters, and every transistor, everything has to be within this range. My entire head, everything was straight up. It was the perfect head. It’s how it was supposed to be and they don’t all come out like that, but that was the perfect one and they based this off of that.

He continues “It’s got the beast button which engages the assault mode and the assault mode’s got a built in gate because it’s basically taking my 10 band equalizer with a decimal boost and putting it in the head. And you can’t change the parameter, but it’s the parameter that I always had set. And you can add more or less of it. It’s really cool. I could go anywhere in the world and if this rig didn't show up, I don’t care, I’ll play through a cable if I have to. But if I have one of those heads, you wouldn’t notice any difference in my sound because I go directly into that.”

At 0:21 this item is seen

Alexis Personal amps were sold after his death. From the listing: "The amp is a Marshall JCM 800 2203KK Kerry King Signature head (serial number M-2007-36-0898-1). JCM 800 was Alexi’s ”go-to” amp on many Children of Bodom records and live tours. This Kerry King model was used by Alexi particularly during the Blooddrunk era. After Alexi’s passing, Kerry King himself paid tribute to Alexi, describing him as ”A Guitar God”."

For his two-amp lineup, Kelliher went with a ’80s Marshall JCM800 and a Marshall Kerry King 2203KFK JCM800, the latter of which has KT88 tubes that crank out “a chunkier, fatter, heavier sound than the standard JCM800.” The heads blast through two Mills Acoustics 4x12s loaded with Celestion Vintage 30s and a Marshall 4x12 equipped with 75-watt Celestions.

In the video "Brendon Small Live Gear" on YouTube, Brendon Small uses the Marshall JCM800 2203KK Kerry King Signature 100-Watt Guitar Amp Head, which appears at the 6:17 mark.

This 2007 photo shows a young Ohmura standing with his THEN new ESP Ohmura Custom Snapper in Royal Silver and his Marshall stack which features a Marshall 2203KK Kerry King Signature JCM800 Guitar Amp Head. The largest giveaway of this signature model is the grey tribal pattern woven into the speaker mesh.

In this music video of Deluhi's "Frontier," Leda can be seen using a Marshall JCM 800. He used the Kerry King signature model during his career with Deluhi.

The amp can be first seen on 0:21.

In the middle of this video he talks about what amps he uses. He goes to show that he uses a JCM 800 kerry king without the beast mode engaged because he likes the sound of them. This happens at 7 minutes and 45 seconds.

Rick Parfitt is seen using the Marshall JCM800 2203KK Kerry King Signature 100-Watt Guitar Amp Head, notably in white, throughout the entire performance of "Caroline" at the Glastonbury Festival on June 28, 2009, as documented in a video by frede olsen on YouTube.

At 6:37 of this rig rundown the Marshall JCM800 2203KK is shown by Ryan Roxie of Slash's Snakepit.

John Stuart "Rage" Dixon uses the Marshall JCM800 2203KK Kerry King Signature 100-Watt Guitar Amp Head as part of his studio rehearsal setup, as shown in the user-uploaded photo.