If your shopping here you are aware of the sonic differences between the the original 4 and the updated 4Z. I must say this headphone was everything people I trust said it would be. I purchased these here on Head-Fi less then three months ago, also I am not the original owner nor do I believe I’m the second owner. This is not my first experience with Audeze and even though the 4’s are different I’m just not a fan of the house sound. If you are the capabilities of these headphones are truly stunning.