Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Simple Idea, Poor Construction

I've been looking for a device like this for years. Multiple digital optical sound generating devices going into one sound system is a problem that I expect a lot of people have. I have to keep switching optical connections to get the best sound from each source--cable box and dvd player to sound system. I figured that someone must make such a switch. The first one of these I bought didn't work as an actual switch, though input 1 did work. Amazon sent me another one that didn't work at all, except for the sound popping in and out. I'm guessing that the construction is just too poor because the idea itself is simple. I'd be willing to pay quite a bit more for a product like this that really works.