a buddy of mine gave me this black huge Precision Power 2300M. its missing the speaker plug, it has 2 power wires and 1 ground wire coming out. It says 300x2 rms. he said he thought 1 channel was messed up. im going to try to hook it up tomorrow to see if it works. meanwhile, does anybody know how much amp is worth or where i can send it to to be repaired? thanks