PIONEER SG-9800 12-BAND STEREO GRAPHIC EQUALIZER - SERVICED - CLEANED - TESTED. THIS STEREO EQUALIZER IS IN VERY GOOD CONDITION INSIDE AND OUT. WE REPLACED ALL DEFECTIVE CAPACITORS, AND ANY OTHER 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.