I bought a Behringer Ultrabass BX1800 Combo a few months back, and gigged with it a few times... Now I have like a crackling when I play ... not all the time, but the sound isn't clear, what could be wrong with it?
I guess I realized its because I bought Behringer, lol.

Should I try fixing it? That shouldn't be too hard, maybe I have a loose connection.
I tried to fix an amp that i had that did the same thing. It would crackle until i jiggled the input. it got worse, tried to fix it but just voided the warranty. So i would send it in if your warranty is still in effect.