Summary
While the Koss KSC-35s were difficult to wear for over an hour, they absolutely dominate the niche of work-out headphones. Any deep pulsating or wispy deep toned ethereal music will bring out the best in these headphones, while more acoustic sounds will have a hard time being heard above the bass. Games fare well, but only as long as the user is able to stand the tight ear clips, and for exercise phones they can't be beat. At $35 these headphones are a steal, even if only to replace the ear buds included in nearly every portable player. And if you accidentally crush them at the gym, they're cheap to replace.

At $35 these headphones are a steal, even if only to replace the earbuds included in nearly every portable player

by Greg Rossi on November 8, 2009:
“I have used these for 10 years. They sound great. I can wear them for hours with no headache. I do construction work and they don't fall off. You can wear a hat with them on. Lifetime replacement for $6 service fee. They stopped making these for a while...” More...