Vivian Campbell

Vivian uses two Engl 850/100 power amps, as shown in this Guitar Geek rig diagram.

Along with Vivian's Boss TU-12, he uses a Peterson StroboRack as well.

Finishing out Vivian's rack units is a Whirlwind Multi-Selector.

Guitar Geek shows in this diagram that Vivian uses an Eventide Omnipressor Compressor.

In this video, band members of Def Leppard mention that they now use Axe-FX III's live.

Vivian uses two Shure UR4D Wireless Receivers, according to Guitar Geek.

As shown in this Guitar Geek rig diagram, Vivian uses an RJM Music Effect Gizmo.

Vivian uses a TC Electronic G-Major Guitar Effects Processor, according to this Guitar Geek rig diagram.

According to Guitar Geek's rig diagram, Vivian uses a TC Electronic 2290 Dynamic Digital Delay, for "for delay, flanging, and panning."

Vivian uses a Yamaha D-1500 Digital Delay, as shown in this Guitar Geek rig diagram.

Vivian uses a Palmer PDI-05 Speaker Simulator, according to Guitar Geek.

Vivian uses 3 Dunlop DCR1FCs positioned throughout the stage according to this Guitar Geek diagram.

Vivian uses a Boss TU-12 tuner according to this Guitar Geek diagram.

Vivian Campbell's guitar technician, David Wolff, utilizes the MXR Custom Audio Electronics RS-10 MIDI Foot Controller, as documented in the 2011 guitar rig photo from Guitargeek.

Guitar Geek shows in their rig diagram of Vivian's set up that he uses a Furman PL-PRO D Series II.

Campbell: I do use heavy strings – Dunlop .013-.052. When you detune them they feel like .011s. Leppard detunes, as well. But I have a bar band in L.A., and we play at concert pitch, so I’m used to that. Now they feel like light strings. I would go heavier, but I don’t like a real thick string for the low end. I don’t mind the first three strings being a bit thicker. It does give more tone.

Vivian Campbell can be seen playing Aria Pro II RS ROAD WARRIOR in this photo(around 1985).

He is playing a ZZ Custom live in 1984

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

In the video titled "This Amp Can Do Everything" by Rhett Shull on YouTube, it is shown that Vivian Campbell was among the first people to purchase the Soldano SLO 100 100-Watt Tube Guitar Amplifier.

A photo of Vivian with a red Stratocaster. He used this in the music video for When Love and Hate Collide.

When asked about the pickups in his Les Paul Deluxe he says, >“I was using DiMarzio X2Ns back then because I was playing through a JCM800 Marshall and there just wasn’t enough distortion in that amp, so I front-loaded it with really hot pickups and Boss overdrive pedals.”

Also in the music video for When Love And Hate Collide, Vivian can be seen playing in front of a JCM800.

This Reverb listing states

Def Leppard guitarist Vivian Campbell used this JCM900 SL-X head on tour with Def Leppard from 1996-2002. Slight remnants of his "Parental Advisory Explicit Noise" sticker can still be seen on the faceplate. Vivian's Marshall amps from this era had this sticker placed over the "JCM 900 SL-X" label and can be seen in the video screen grabs in the photos. Vivian's unique amp settings remain marked on the faceplate in grease pencil.

Vivian Campbell, the guitarist for Dio, is known to have used the Mesa/Boogie Mark IIC++ Head, a modified version of the amplifier that included the “++ Mod,” which increased the gain in the Lead Channel. This modification was performed approximately 20 times by Mesa Boogie before the end of the IIC+ production, as noted in the source titled "A history of the Mesa Boogie Mark II series."

Vivian Campbell is confirmed to use the DiMarzio DP152 Super 3 pickups, as listed on the official DiMarzio website.

With Gary Moore being a big influence, Vivian bought his own Greeny clone to use in his time with Thin Lizzy. He named it “Gary.”

Also shown in this video https://www.musicradar.com/news/vivian-campbell-shows-his-gary-moore-and-rick-nielsen-signature-les-pauls-for-def-leppard

Vivian Campbell owns a Gibson Custom Rick Nielsen's 1959 Les Paul, which he has named "Ricky." This information is confirmed in the video titled "DEF LEPPARD - This Guitar: Gear Breakdown with Vivian Campbell," available on the DEF LEPPARD YouTube channel.

Vivian Campbell uses a Gibson J-200, which he had refinished in red after the original finish began to crack. He has named the guitar "Lily" after his oldest daughter. This information is confirmed in the video "DEF LEPPARD - This Guitar: Gear Breakdown with Vivian Campbell" by DEF LEPPARD on YouTube.