I bought mine used, so don't take this as gospel or anything. First pair I got on eBay and they had horrendous imbalance and it wasn't even consistent. However, they have a pretty nice warranty and it is transferrable. Problem is the seller wasn't the original owner and didn't have the original receipt, so I just returned them instead. Bought a second used pair on FB Marketplace, this time from someone who could provide the receipt, and they have been just fine. Absolutely love them.