Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointed

I was very excited about this headphone. The sound is great even though it is not noise canceling able, it is great to close outside noise once you raise the volume. The bass and treble are strong and of good quality.Unfortunately after exactly 7 months, the right side speaker went out. Only the left speaker work...Very disappointed. I only use the headphone rarely, and kept it in my computer bag which is a safe place since my laptop is also there. Would I recommend the headphones...NO.