Instruct: Classify a review into positive or negative sentiment.
Query: Looking at them you would have never thought it !

I was looking for some decent portable headphones that sounded good, kept seeing the Koss PortaPro name come up as I hunted. These things look like Dyna-Soars, but sound AMAZING!! I can hear bass riff's and details that I had no idea where on the cd!! They have a much better frequency range than any portable headphone I have ever used. They are a little bit cumbersome but still fold up into a small circle thats pretty easy to carry. They are not comfortable to hang around you neck, they are a bit too tight, so it's either on your head listening or take em off. They do have a lifetime warranty and have been made for longer than you might want to admit. They look very retro, but don't let that fool you!!The Koss PortaPro's sound AMAZING!!