Home Dealnews Used Harman Kardon Onyx Studio 3 BT Speaker for $56 + free... Dealnews Used Harman Kardon Onyx Studio 3 BT Speaker for $56 + free shipping By ARCOM - 9 May 2018 158 0 SHARE Facebook Twitter Go to the deal page: Used Harman Kardon Onyx Studio 3 BT Speaker for $56 + free shipping