Featuring Advanced Series Mode technology and Impedance Tolerant EMI/RFI filtration, they provide patented surge elimination and power conditioning for equipment that relies on peak AV performance. The Standalone surge protection devices are comprised of non-sacrificial components that never degrade or fail, guaranteeing equipment stays protected. They eliminate surge energy up to 6,000 Volts without producing harmful ground contamination or common mode disturbances that can cause hissing sounds and pixelation on AV systems to ensure pristine sound and video.