"UL listed power supplies receive the highest level of testing, highest quality components, and are UL certified for manufacturing quality." NEW Industrial Switching Power Supply For Klipsch Reference Sound Bar Input: 100 - 240 VAC, Standard 3-Prong Socket (AC Power Cord is Included) Output: 24 VDC,  2.7A Output Plug: 5.5 mm Outer Diameter, 2.5mm Inner Diameter Safety Approvals: UL Listed Efficiency Level: V Ships from New York.  30-Day money back guarantee.