High Gain Monster for metal, metalcore, and djent! Trivium, Lynyrd Skynyrd, Dragonforce, Mayhem, Machine Head and many more use Peavey P5150.
This guitar amplifier with Pre-gain, Low, Mid, High, Gost gain, Resonance and Presence knobs is very easy to shape. You can create a very wide range of rock and metal tones using this amp.
Or, better yet, try it yourself