Gary Holt

on the tc electronic website, it states gary uses this pedal

he is seen playing through this amp in the video

In an Instagram post, Gary Holt showcases his Mooer Tender Octaver MKII as part of his pedal board for Slayer's backstage jamming, warm-ups, and rehearsals.

And here’s “Officer Holt”! My tribute the the men and women in law enforcement as well as first responders everywhere! So fucking stoked!! EPIC!!! Even more fired up for this tour in a matter of days to be able to crush on these guitars!!

Gary Holt incorporates the Pigtronix Philosopher's Tone, a compressor effects pedal, into his setup. This is evidenced by a user-uploaded photo on Imgur.

Wah can be seen 5:20 into this video.

https://www.khdkelectronics.com/artists/detail/gary-holt/

Picture of Slayer live at Wacken 2014. This is Garys side and in the lower left corner you can just make out the Kirk Hammet cry baby on his pedalboard.

Gary Holt uses the Mooer Green Mile overdrive pedal, as seen in his Instagram post where he showcases his Mooer pedal board for Slayer backstage jamming, warm-ups, and rehearsals.

In an Instagram post, Gary Holt expresses enthusiasm for the Airis Effects Portal Drive, mentioning he received it in the mail and plans to test it with some intense riffing.

at 21:38, he talks about this guitar

at 20:23, he talks about this guitar

In a post on his official Instagram, Gary Holt showcases his Gibson Les Paul Supreme, referring to it as part of his "toolbox in the home office" for spontaneous riff creation.

Verified This combo is proving to be DEADLY!!!! This Jubilee from @marshallamps_uk combined with this tube screamer and this bad as FUCK pedal from @protonepedals is just destroying! And it also does what other amps can’t. Something about a well overdriven Marshall that has a clarity and punch that can’t be reproduced!!! LOVING THIS!!! Riffs and drums are flying left and right here in the mountains!!

WestCoastPedalBoard made Board for the Slayer & Exodus tour and posted pictures of it.

Used by Gary Holt in Slayer according to this old capture of the Marshall website.

Gary Holt uses the Pro Tone Gary Holt Signature Mid Boost pedal, as shown in the user-uploaded photo.

In the Premier Guitar Rig Rundown article, Gary Holt is shown using the ESP LTD GH-600 electric guitar.

Visible in this instagram post of Gary.

Gary Holt uses the Line 6 Relay G90 Rackmount Digital Wireless Guitar System for its dual-channel functionality, which simplifies guitar changes during performances. He appreciates the durability of the packs, likening them to "cinder blocks," which suits his energetic playing style. This information is featured on Line 6's artist page.

Gary Holt and his LTD EC-1000FR in the studio tracking solos for the new @Slayer album. Photo by @ndrewStuart.

Gary can be seen here playing through Engl 4x12 cabinets.

Gary shows his TC Electronic pedal 1:17 into the video.

The TC Electronic G-Major II can be seen 1:26 into the video.

Shown and Mentioned in this Gear Run of Garys Slayer live Rig at 2:08

1:48 into the video, Gary shows the Rocktron Surf Tremolo that was previously used by Jeff Hanneman.

From the interview with Premier Guitar:

What effects did you use for Blood In, Blood Out? Holt: I use a ton of different pedals. I love stompboxes—they’re like crack to me! I have pedals from Maxon, Dunlop, HomeBrew Electronics, Pigtronix. I use a lot of the Maxon Tube Screamer-type pedals. They made the original ones, so they have ones that are exactly like the original, sought-after ones, and they also have updated versions.

I also love the Boss Octaver. I’ve never been without one my whole life. Dunlop makes a bass octave pedal, which sounds probably even a little better and has a smaller footprint, which I also like. And I use a Voodoo Lab Ground Control. With Slayer, I’ve been using the Dunlop Jerry Cantrell wah. Kerry [King] uses the Zakk Wylde wah, so I wanted something to differentiate our wah sounds.

Signature pickup with EMG

Gary has been a long time EMG artist from his earliest days playing lead guitar in San Francisco bay area metal band, Exodus. Now also a permanent member of Slayer, Gary Holt has earned his place in metal history and the GH set exemplifies his sound and look. For years EMG has created custom red pickup caps just for Gary Holt, now, thanks to him, the Red Series EMG pickups are available to the public. The GH set includes an EMG 81 in the bridge and an EMG 89R in the neck position. The 81 provides all the crunch and tight sustain Gary needs. The 89R plays double duty as a humbucker and a single coil with its own preamp and coil for true single coil tones with no hum. The GH Set gives players multiple tonal options that scream to be played.

-On the website

at 22:40, he talks about his pedals

at 22:50, he talks about the pedal