https://www.groundguitar.com/dave-mustaine-guitars-and-gear/Dave Mustaine Guitar Amps:
– Marshall JCM800
Although it’s hard to say for sure, but Dave most likely used a lot of different JCM800s during the Megadeth’s first three-four albums. He was playing them through DeCuir Cabinets with Celestion speakers.
– VHT 2150 Power Amp
First used used in the early 90s, most likely as early as 1990 on Rust in Peace album. For next couple of years he would stick to this power amp, but would go through couple of different preamps (as listed bellow)
– Bogner Triple Giant Preamp
Used most likely as a preamp for the most part of Rust in Peace, since the Bogner Fish which is usually mentioned in relation to RIP wasn’t released until some time later after the album was finished.
– Bogner Fish Preamp
Used from around 1991 to 1992, although it is possible that Dave had access to an early prototype of the Bogner Fish and used it at least partially on Rust in Peace.
– Custom Audio Electronics 3+SE Preamp
Used during Countdown and Youthanasia era.
– Marshall EL34 100/100 Dual MonoBloc Power Amp
Dave switched away from VHT to Marshall power amp sometime in the mid 90s, – in time for the 1997 album Cryptic Writings.
– Marshall JMP-1 Preamp
A change to his preamp setup introduced at the same time as the previously mentioned Marshall EL34 power amp.
– Rocktron Prophesy Preamp
Dave got rid of the JMP-1 in time the for the 1999 album Risk, and started using a Rocktron Prophesy instead. This preamp would remain in his rig until around 2007.
– Line 6 Custom-made
This amp was designed and made specifically for Dave, and was used on the album 2007 “United Abominations”. By 2008 Dave abandoned this amp and went back to the Marshall.
– Digitech GSP1101 Preamp
Replaced the Rocktron Pophesy in 2008, and used until around 2012.
– Fractal AxeFx II Preamp
Used since 2012.
– Marshall JVM410
Dave started using this amp circa 2008.