Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Buyer Beware...Koss Makes Crap

I bought a Koss 5 disc progressive scan home theater system for Christmas last year. I should have known when the one I brought home didn't work, that I was making a big mistake. The machine had trouble reading discs (as did the first one I purchased). It then worked for a while. Long enough to expire the warranty. It has now been exactly 10 months since I bought it and it will not even power up. Do not be seduced by a great price on a product that "looks" good. Koss is a horrible brand and I've had nothing but problems since the day I bought it. I should have just gotten my money back when I could instead of hoping it would turn out to be a great deal. I could have just mailed them a check for $150. I've got nobody to blame but myself. Consider yourself warned.