Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good for semi-professional use

I bought these headphones as a present to myself for graduation. I use them primarily for casual jazz listening and hip hop music production/turntablism. I am not, repeat, not an audiophile. However, I do know when I have a good pair of head phones. I can wear these babies for a couple hours without discomfort, and when they do start to hurt, I simply move them back a little farther on my head. Sound canceling/leakage is excellent. The pads cut out most external sound and keep it from leaking out. The cord is a nice length, and the ability to replace just the cord and not the whole headphone will probably come in handy in the near future.The bass on these bad boys is amazing, perfect for listening to hip hop, funk, soul, or anything with a driving bass line. I have already noticed several complex bass lines i missed using other headphones. I don't know how well these work for audiophiles, but for a semi-casual user, they are perfect.