I packed the damaged set into a box with a check for $6 and a note describing the failure along with my contact information, and two weeks later I received a brand new set with a note from Koss thanking me for my initial purchase.

I often field user complaints about the durability of headphones and the unwillingness of companies to stand by the build of their products. I urge all those people to check out the Koss Porta Pros.

The company continues to offer its no-questions-asked lifetime warranty, and I'd be hard pressed to find another vendor with the same level of customer service.

Check out our full review of the Koss Porta Pro headphones.