Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Gone after five months

I absolutely loved these headphones when I got them. They were comfortable, durable, and had great sound. Unfortunately, after five months the sound in the left headphone went out. This makes them virtually useless. To add insult to injury, they went out during a LONG flight across country. I had to endure the flight with no music. For the money these cost, they are NOT a good value.