YAMAHA AVC-30U NATURAL SURROUND SOUND INTEGRATED AMPLIFIER - SERVICED - CLEANED - TESTED. 100 WPC. VERY POWERFUL AND CAN BE USED AS A 2 CHANNEL AMPLIFIER. THIS INTEGRATED SURROUND SOUND STEREO AMPLIFIER WORKS PERFECTLY AND IS IN VERY GOOD CONDITION INSIDE AND OUT, JUST A FEW SLIGHT SCRATCHES ON THE TOP AS YOU CAN SEE IN THE PITURES. WE REPLACED ALL DEFECTIVE CAPACITORS AND ANY OTHER DEFECTIVE COMPONENTS. REPAIRED ALL POOR SOLDER CONNECTIONS. CLEANED ALL CONTROLS AND SWITCHES. (WE HAVE BEEN IN BUSINESS FOR OVER 60 YEARS REPAIRING VINTAGE AUDIO EQUIPMENT.) IF YOU HAVE ANY CONCERNS, PLEASE CONTACT US PRIOR TO YOUR PURCHASE.