I had an issue with the left driver of my pair when I owned them. I contacted LZ and they said they don't handle customer service claims and don't do repairs. The only thing I can do is contact the seller I got it from (Amazon) and cross my fingers. Which I did, and luckily they accepted it. But for this unfortunate fact alone, I won't be buying another set. If it had broken a couple more months down the line, I would've been screwed. It's a shame too. I loved the A5 and still haven't found anything that comes close to their sound for me.