Mondial Designs Magic Antenna Ground Isolator

If you have a ground loop hum in your audio/HT system after hooking it up to the cable, this is the device for you. It also can eliminate video noise (in my case, a vertical rolling bar).

According to Mondial, it will remove both audio and video noise emanating from the ground found in most systems connected to either cable TV or a roof antenna. In some cases the audio noise will be heard as hum. The MAGIC is the only component capable of both removing noise and improving the picture quality of an audio/video system. The MAGIC's heavy gauge cast aluminum chassis contains advanced miniature surface mount circuitry with over 30 components. This patented device is so effective at eliminating this audio and video noise problems, it is used by network broadcasters, federal security agents, and jet airplane manufacturers."

The thing actually works, but my new cable drop makes it unnecessary. Rated 8 due to age only, no visible marks. At my asking price, I will cover shipping and fees. Buy with confidence from long-time user with impeccable feedback.