Bose Acoustimass 10 Series V Home Theater Speaker System, Black The best-performing Acoustimass system from Bose delivers spacious surround sound for larger rooms Redesigned Direct/Reflecting Series II speakers have a slimmer profile and can mount flush to your wall Powerful low note effects from powered Acoustimass module with two high-performance drivers Adjustable controls for volume and low-frequency effects Cables and connectors included and clearly marked for easy setup. U.S./Canada: 100-127V - 50/60 Hz 270W.Compatible with A/V receivers and amplifiers rated from 10 to 200 watts per channel, rated from 4 to 8 ohm