Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Do not buy-- notifying Amazon to remove.

I read the reviews but consider myself very knowledgeable about this stuff. When I attached it from my cable box to two televisions, I got audio but not picture (unless I removed one, and then got audio/video). When I attached it from my dvd player to two televisions, I got brief video and audio--- a few seconds (with a lot of popping).Too bad there aren't more products like this--- yet. Getting a switcher is the only way to go.