SUBWOOFER IN USED CONDITION. TESTED & WORKING. EXCELLENT HIGH QUALITY ITEM. AMAZING SOUND. GOOD WORKING ORDER. THIS SUBWOOFER IS PASSIVE AND CAN BE USED WITH ALMOST ANY STEREO AMP TO ADD A SUBWOOFER FOR 2.1 CHANNEL OUTPUT. YOU SIMPLY ROUTE YOUR SPEAKERS THROUGH THE SUBWOOFER. EASY TO SETUP. COSMETICALLY SOME RUBS / MARKS / SIGNS OF USE. THE FRONT PLASTIC PANEL IS YELLOWED / DISCOLOURED DUE TO USE / AGE THE DISCOLOURATION BECOMES DARKER WITHIN THE PORT. CONSULT PHOTOS IN DETAIL FOR EXACT ITEM YOU WILL RECEIVE. TESTED & WORKING. USED CONDITION