Halocene has been using PreSonus since their first purchase of a FireStudio years ago. Of late they’ve picked up a StudioLive console, a Eureka, and Studio One Professional 2… and in-between they’ve opened for Jimmy Eat World and Blink-182.
Lesson learned: You don’t need to be signed to a major with world-class studio access to open for a band who is. Just get some PreSonus.
Oh, also be sure to write good songs and be young and enthusiastic. That helps, too.