6.5-inch Three Source plus one Amplified "Green" Drop Ceiling - Two Speaker combination package includes One (1) each AMP1SGRN 6.5-inch amplified speaker with (PS15VDC35AL5) UL Listed, Level 5 (Energy Star) 15V DC, 3.5 A power supply, one (1) each Backcan enclosure and one (1) each 6TB tile bridge.