Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Has anyone had luck source switching with this?

I'd be interested if anyone who has used this switch for source switching has had good luck with it. Could be that all positive feedback is from those using it to select one of two sets of speakers. We are getting a ground hum as well in our source switching setup. By source switching, I mean we have one source coming from the TV audio output, and another source from a stereo system. We are selecting one of those two sources to play on the speakers with this switch. I give this one star since it is advertised as working for source switching, however the hum is so bad that I can't use it for that purpose.