Isolator, RF Ground Loop w/Surge Protection 5-1002MHZ

This thing works like magic! Had a disturbing ground noise/hum coming from the Comcast set-top box through my tower speakers. I have an elaborate setup for Home theatre. AV Processor (which is what the HDMI out from cable goes into), Power amps. I even have a Furman power conditioner for everything. I STILL had the hum. Read reviews and tried this. BOOM!! Nasty hum from the speakers vanished!!

These a great addition to your lightening and surge protection. I put them at all my TV sets. They also fix any audio distortion you may have from bad grounds. Just all around great peace of mind.

It works, but it could be a lot better. For the price it should function better, but there’s not many other options

I installed a new subwoofer with my home theater system. There was a 60 cycle hum coming from the subwoofer as long as the satellite box was connected to the receiver. There was obviously some grounding problem. I inserted the ground loop isolator between the incoming sat feed and the sat receiver. It did exactly what it's supposed to do. Stopped the sub from humming. Great piece!