Holland Electronics Coaxial Cable TV Isolator
Eliminate ground loop hum in your home theater with an inline cable isolator. Ground path noise or a ground loop can happen if you have multiple devices connected to a common ground through different paths. If you're hearing a hum in your audio or seeing horizontal lines on your TV, this cable isolator blocks 60Hz power up to 5,000 volts. It can also reduce the energy level of electrical spikes.
