For sale is a Sony MDR-DS7000 digital surround headphone system. I used to use this a long time ago, but I haven't used it in over ten years, so I'm putting it up for sale. Product Features: New 7.1ch VPT (Virtualphones Technology) creates a natural surround sound field with seamless connections between each channel. It prevents audio dropouts caused by radio interference, allowing you to comfortably listen to a full 7.1ch surround sound field. Compatible with Dolby Digital, Dolby Digital Surround EX, DTS, DTS-ES Matrix, DTS-ES Discrete, and MPEG2 AAC. Features a layout-free battery charging system where you insert the headphones into the included AC adapter for charging. Large 40mm driver unit for powerful sound. Two optical digital inputs / one analog input. Optical through output allows simultaneous use of the input source with other AV devices. I like wireless headphones and have used various brands, but I've never had audio dropouts with Sony headphones, so I used them the most. *The part that goes over the head is made of the same material as the ear pads, and it had deteriorated over time and was peeling off, so I removed it all. (See photo) Please refrain from purchasing if you are concerned. The operation is also fine, and the ear pads have been replaced with aftermarket ones, so I think you can still use them for a long time. *Please note that the input is only optical digital. Thank you for your consideration. - Type: Wireless Headphones - Accessories: Charger - Controls: Button type - Design: Over-ear