Summary: I PURCHASED THREE KOSS UR20 HEADPHONES; ONE FOR MYSELF BECAUSE I AM A 68 YEAR OLD GRANDMA WHO LISTENS TO GUNS N ROSES ON YOUTUBE NIGHTLY AND TWO AS GIFTS. I AM SO IMPRESSED WITH THE GREAT QUALITY SOUND PLUS THEY ARE VERY COMFORTABLE. WHY PAY A HUNDRED PLUS DOLLARS WHEN $14.89 FROM WALMART GETS YOU THE SAME QUALITY SOUND. COULD NOT BE MORE IMPRESSED!
Summary: These headphones are great for listening in quiet environments. The sound quality is very good and they fit softly and comfortably. They do not block out outside sounds very well, so you would not want them for mixing live sound or for listening to music as you mow the lawn. I like the one-sided input cable which makes the phones easy to put on without getting stuck in my shirt buttons. Good headphones for the money!
Summary: These are, by far, the best phones I have ever used. I drive them with an Android tablet. I switched from Beyerdynamics Dt-990 (600 Ohmss). These have excellent treble and bass response. I suspect that they are not flat in response. That is terrific, because human hearing is anything but flat. They perform excellently with classical, jazz, rock, experimental, and even chiptune. Sound isolation is surprisingly good.
Summary: I use these for PC gaming more than music or stereo.
Pros: The ear pads are large and soft, sound quality is fine, cord is long and thick, seems to cancel noise better than my other headsets.
Cons: Ears sweat a little after about 30-60 minutes of use (which is why I removed an egg), you have to re-adjust the size every time you use them since it falls back to it's smallest position quite easily.