Using UMAC technology ensuring the XPower to operate at its maximum performance under any circumstances providing consistency in high-quality sound with power output broadband up to 35Hz. Based on the UREC? PFC, complies with ErP( 1275/2008),its standby power consumption is less than 0.5 Watt. Meets EMC (Electromagnetic Compatibility) safety certification standards. (UMAC, UREC Trademake and technical is belong to PASCAL A/S)