Summary: I needed an affordable set of quality headphones for band rehearsal; listening to pre-recorded music while playing along on my Hammond SK-1. Using PA monitors was too much of a disturbance to my household. After using the Koss on-line comparison features, I decided on the PRO 3AA.
Pros: Great sounding; great isolation; comfortable
Summary: The Koss PRO3AA Full Size Headphones can compete with headphones that cost twice as much from other brands. I've had mine just about a year and a half and the sound quality has gone no where but up even with the powerful genres I prefer to listen to. The bass is powerful and yet clean and refined.
Summary: I’ve had this model for about a month and I have been very happy with them. Nice fit and great sound. I use them for gaming and I can hear so much more detail then my normal 5.1 setup. Great bang for your buck.
Summary: I'm in the same boat as the other reviewer. As I sit here with my 2nd broken pair on my lap, readying them for return and replacement...which Koss is great about. Both of mine also broke where the black adjustable band attaches to the silver ear-cup swivel that contains the L/R orientation marks.
Summary: I have sent back my headphones at least two or three times because the adjustable plastic sides have broken. As I am typing this, my headphones are currently broken in the same place they always break. Besides that, they are good quality and are definitely worth the price.