Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not what I expected

I bought these knowing they weren't Bose. I love over the ear headphones and I was hoping this would satisfy my needs. I read other reviews, already knowing the pro and cons of these headphones. What I wasn't expecting is the mono sound coming from the headphone without the bass turned on. It was a little disappointing, but common sense told me to just leave the subwoofers on. As far as watching movies with them, they are great. Appropriate for any movie you can imagine. I even used them to edit video and audio for school. What really disappoints me is they only lasted 25 days of use. The left subwoofer went out and I was left with crackling and poor sound. The sounds of the plastic as I moved around would overtake anything I was listening to at any point of having them on. Poor quality at a low price. I should have known better...