I buy from a local Amazon Walmart Target Kohl's returns center and I find some pretty good deals.  I didn't realize the USB receiver was missing until I got it home. so I just bought another one. It is included and my PC recognized it. You'll have to pair them.  They don't sound to bad at all! And I'm a headphone junkie. I've owned probly 30 pairs the last 3 years. I love my Audio Technica ATH-M50x's the most! But these will hold their own! Use them wired or buy a USB receiver! Either way these are VERY comfortable great sounding cans ! Thank you for looking!