wtf does a compression do?

i have one, and all it does is make it louder, and my room shake.

is that all it does?
Why did you buy it if you didn't know what it does?
Quote by GlamSpam
I'm a capitalist because I want to be a rich Metalhead. Don't twist my words.

Chief Comrade of the UG Socialist Party
gah damn dude. Are you serious? Take it back then. Its not the kind of thing you need.

And do a search. This thread is like a replica of about 20 threads Ive seen in the last 3 days.