I purchased this sound system to go into a new bar. It has never been installed or used professionally. Consists of Yamaha speakers 4-BR 12, 8-BR15, 8-18, the crown s to run each speaker set up, a yamaha mixer, a monster power center and all cables. Not interested in any trades. Selling as a whole. Will not ship. For more info call Jason at 207-423-2400.