BSR 1100 10-BAND STEREO GRAPHIC EQUALIZER - SERVICED - CLEANED - TESTED. WITH OWNERS' MANUAL. THIS STEREO EQUALIZER IS IN EXCELLENT CONDITION INSIDE AND OUT. WE REPLACED ALL DEFECTIVE COMPONENTS. REPAIRED ALL POOR SOLDER CONNECTIONS. CLEANED ALL THE SLIDER CONTROLS AND OTHER 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.