It is China, the world's capitol of counterfeit and just about everyone is claiming he/she is selling the real deal.
Found the seller you are talking about (since he is the only one selling @ RMB158) and actually there is another one selling @ RMB99 for the same stuff. These no-box deal is usually referred by the local as 'straight from factory', 'factory leak' or even 'factory rejected', but the true is they are just fake. Counterfeit these days are so well made, you can't tell them apart from the real deal by the look alone, and local who buys them know and accepts that fact. It is so bad that many Chinese headphone forums ban any topic that discuss these cheap Taobao headphone 'deal'
