Too bad more people don't know about this brand. They alway make quality sounding headphones, even better than the high-end vanity brands. Unfortunately, they aren't always in Best Buy stores so you can't try them out or see how better they sound than the rest. These are DJ cans but I bought them for the gym. Other than the stiffness of the cords, which makes sense for a DJs, they are also pretty good for working out in the gym. Just make sure to wipe them down afterwards to prevent deterioration. They aren't necessarily noise cancelling but because they fit over your whole ear, the impact is almost the same in a loud, music-playing gym. They fit nicely over the head and come with a high quality carrying case. The detachable cord is brilliant as well and keeps the connecting cables unbent or frayed. I did plug them into my MacBook Pro one time while on the bike and got some signal problems. As in, the cable has a dial where you can change tracks and so if the cable is moving it can change music tracks. In my case, I was listening to Spotify but the cable kept turning on iTunes and playing music because of the moving of the cord while I was on the bike. No matter if I shut down iTunes, it kept trying to play music even though Spotify was already running. But that's not a major issue. Koss also comes with a warranty which is rare with headphones these days. As stated before, the sound quality is excellent, nice round sound--almost reminds you of the full, thick sound of old hi-fi systems.