Megadeth – Rust In Peace

In the picture, Dave Mustaine is seen on the stage with the Dean V Dave Mustaine - Rust In Peace pointing at the croud in a concert in Ecuador.

Item is seen at 7:53 in the video.

On the cover of Dave Mustaine's book "Rust In Peace" (released September 8, 2020), the guitar featured is a Jackson KV Pro Dave Mustaine Signature. This is identifiable by the distinctive blade-style Bill Lawrence USA L-550XL Black Humbucker pickups in the neck position. Additionally, the guitar sports a Megadeth sticker on the upper wing, similar to another guitar seen in the "Holy Wars...The Punishment Due" official music video, although that guitar does not have the blade-style pickups or Mustaine's signature on the headstock.

Rust in Peace is tortex yellow through and through

Mustaine also uses custom Dunlop Tortex .73mm. This can be seen even back in their videos at Rock In Rio 1991 (tons of them on his mic stand)

In 1990 Megadeth released their landmark fourth album, “Rust In Peace”. Widely regarded as one of the most iconic and influential metal albums of all time, its breakneck rhythms, intricate arrangements, shifting time signatures, and blazing dual lead guitar lines showcased the band’s mastery of their craft.

During the recording of the album Dave relied heavily on one guitar in particular, loaded with a Seymour Duncan JB in the bridge and 59 model in the neck. According to Dave, that JB had a tone that was different from an ‘off-the-shelf’ JB – and had become part of his signature sound.

We worked closely with Dave to recreate the tone and feel of his favorite JB, ultimately altering the winding process in order to achieve the tone he was looking for – compared to the standard JB model, the Thrash Factor’s low end is tighter, the mids are slightly scooped, and the highs are more aggressive.

In this picture, you can see a Bill Lawrence L500 XL on the neck position on his Jackson King V DM 01 in the Rust in Peace era.

Dave Mustaine used the Hafler Triple Giant preamp, originally a Bogner design, during the recording and tour of the "Rust In Peace" album. This is evidenced by a user-uploaded photo on Imgur.

Taken directly from Marty's wikipedia page, his listed gear:

Amps and effects Engl Signature Marty Friedman Inferno (current) Fractal Audio Axe-FX II processor (current) Engl Special Edition (former) Engl Powerball (2011 tour) Custom Audio Electronics CAE 3+ preamp (Countdown, Youthanasia albums and tours) (former) Soldano SLO-100 (custom rackmount with slave out and effects loop circa 1992, used in studio for both guitar and bass tracks) Bogner Triple Giant #11/25 (Rust in Peace album and tour) (former) Rocktron/Bradshaw RSB 11 controller Crate Blue Voodoo (as power amp, former) VHT 2150 power amp (former) Maxon AF-9 Auto Wah[30]