The IT-Reference 15i's Discrete Symmetrical Power features total isolation between the filtered-high current outlets, and the isolated symmetrical power AC outlet banks. This positively breaks noiseinducing ground loops, hum bars, and power supply backwash between critical interconnected equipment, all without compromising electrical safety. With this exclusive Discrete Symmetrical Power, video screens, projectors, CD-DVD players, pre-amplifiers, and scalers are fed linearly-filtered ultra-low-noise symmetrical power. This dramatically reduces AC noise, ensuring peak operation of your critical components. For the first time, you will see and hear your theater or audio system as it should be - uncompromised. The IT-REFERENCE 15i also employs our unique Power Factor Technology circuit. For the first time, low-level analog, digital, and video components are not modulated or distorted via the power amplifier's extreme AC current demands. This technology enables power amplifiers and powered subwoofers to work at peak efficiency and reach levels of performance previously unattainable. Features: Discrete symmetrical power with dual screen technology cancels hum-inducing noise from audio and video Power Factor technology provides surplus current for power-starved amplifiers Linear Filtering Technology (LiFT) for unequaled audio / video clarity Series Multi-Stage Protection (SMP) provides maximum AC surge suppression with Extreme Voltage Shutdown (EVS) and high current TVZ-MOV Three HD ready bidirectional coaxial surge suppression modules Detachable surge suppression module for telco and cable / satellite connectors