LINEPAUDIO Buzz Eliminator AC Ground Loop Noise Eliminator Plug-In AC Buzz Killer Hum Eliminator black.The device is specifically designed to eliminate ground-related Hum and Buzz issues quickly and easily. Features: It filters low voltage from the ground line that causes audio ground loop hum and buzz. Plug-in design, small and lightweight, easy to use. Suitable for 120V 60Hz grounded US power outlets. Does not affect voltage in any way, neither the sound quality of audio equipment. A built-