Pros: Good in passive mode, great in active, and decent noice canceling
Cons: My ears get warm, and a bit too big and heavy for laying on my back.
I bought these headphones a little over a week ago, and thought I should post my impressions. I work in a small office, and sit close to my boss, who is constantly on the phone, so I wanted a noice-canceling big headphone for home and for the office. I first listened to these a year ago and fell in love with the sound, but my wallet didn't allow the purchase, and now I own them, and am very happy with them. Previously I owned the K701's, but sold them because the headband hurt my scalp, and I've been using in-ear phones since, I mostly liked the sound in the K701, the bass was very correct, but sometimes not that fun, and the highs incredibly unforgiving. The PSB's are more balanced in my view, and have a bit more oomph, especially with the built in amp on. The noice canceling works well in the office, but does change the sound slightly, I can't put my finger on what happens, but it is not as good as with just the amplification on. Either having a stack of batteries handy or a charger seems to be needed, but I think this is a better solution than a built in charger.