If I got an orange dual terror, would I need a pedal to reach the gain levels of Mastodon or Protest the Hero? You know, kind of a prog metal sound?
I'll pretend I can mod your amp but break it instead.
Mastodon: depends what album. Definitely not Call of the Mastodon or Remission. You might be able to pull off some Leviathan songs.

Protest the Hero: definitely not. You'd need a really highgain boost or even a standalone distortion. I've heard demos of the TT being used with a blackstart HT-Dual and it sounds very good for that metalcore kind of tone.