Verb
(transitive) To amplify; to increase the power, interest, intensity, volume, etc. of (something).
(transitive) To excite; to arouse
Source: en.wiktionary.orgThen I learned to play some lead guitar, I was underage in this funky bar And I stepped outside to smoke myself a j When I came back to the room, everybody just seemed to move And I turned my amp up loud and I began to play. Paul Simon
It's not about how loud you turn the amp up. That's not what makes it sound big. What makes it sound big is fooling around with different delays and reverb settings. Brian Setzer