I purchased a pair of their headphones, at no small cost mind you, only to have them malfunction less than an hour after I opened the box. When I spoke to a representative of ZEDD Sound It was matter-of-factly explained to me that there was NO MANUFACTURERS warranty or guarantee of any kind and that I needed to "look on my receipt, or even my bank statement" to locate the phone number of the vendor that sold the headphones to me and that It was the retailer's responsibility to address the crappy product. Do not buy these headphones if quality and reliability are important to you.