Explore Neural Amp Modeler (NAM) profiles of the iconic Mesa Boogie Mark IV, the legendary high-gain tube amp that defined modern rock and metal tones from 1990-2008. Featuring three fully independent channels with cascading gain stages, graphic EQ, and the revolutionary Simul-Class power section that switches between Class A and Class A/B operation. Used by metal titans like Metallica's James Hetfield and Dream Theater's John Petrucci, plus Santana and Keith Richards, this versatile beast delivers everything from sparkling cleans to singing leads and crushing rhythm tones that shaped decades of recorded music.