Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bass Deficient

These came to me highly recommended and anticipated. What a let down. Noise cancellation good, but the bass reproduction on the headphones flat out sucked. Along with the totally outrageous THREE day return policy, and ridiculous 15-25% restocking fee by the vendor, I was to say the least very very very disappointed. Never been so disappointed with an electronic device as I was these. They did fit pretty well but that is as far as it went.