I have (3) gently used Behringer EXP3000 Amps for Sale, they were used in a HT setup and powered by a Receiver so they were not abused and in excellent condition. Great for powering Speakers, Subwoofers, PA usage or Band Gigs.The EXP3000 is rated at 8 ohms (typical speakers) @ 500w/channel in stereo, or can be bridged with a switch in the back of the receiver to 1700w mono. Output is correspondingly higher for 4 ohm speaker. It has gain controls for each channel, LED power level indicator lights, RCA or Balanced cable provisions, and is very flexible for set-ups. They have internal fans for cooling. $125 ea.