This auction is for a USEDBOSE 901 Series IV Active Equalizer I bought this for my dad but it was the wrong one, so now it goes back on eBay. It doesn't look to nice cause its old and a lil' beat up but works just fine. Ill try to give you an accurate descriptions as possible; On the top left of the box the wood is chipped and a small piece comes off but does not effect the performance of this great EQ. The bottom of the box is a little bit dented and says "For use exclusively with BOSE 901 series III and IV loudspeakers" So please be aware of what you are buying and weather or not it will work correctly with the speakers you have. Please ask any and all questions before bidding. All sales final. Please leave positive feedback for me when you receive the item and I'll do the same for you. Thanx and happy bidding.