The cable that runs between the L and R earphones develops an intermittent connection within weeks of purchase or repair. I own 4 pairs and they're all bad at the moment! I've spent over $60 getting these repaired over and over again but they continue to go bad. It doesn't matter how durable and solid the construction is if you use a poor quality cable. I never used to have a problem with the cable, just in the last 2-3 years or so since they switched from a glossy cable to a matte cable. Surely I'm not the only one with this issue. In any case I'll be selling mine after getting them repaired again.