DENON PRA-1100 STEREO PREAMPLIFIER - SERVICED - CLEANED - TESTED. THIS STEREO PREAMPLIFIER WORKS GREAT AND IS IN VERY GOOD CONDITION INSIDE AND OUT. WE REPLACED ALL DEFECTIVE CAPACITORS AND ANY OTHER DEFECTIVE COMPONENTS. CLEANED ALL CONTROLS AND SWITCHES. REPAIRED ALL POOR SOLDER CONNECTIONS. (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.