The 4Pin XLR balanced male is connected to the HD800 HD800S HD820 headphone connector. Input: For HD800 HD800S Plug (Gold Plated). Suitable For HD800 HD800s HD820. Superior Quality Sound: Provide clear sound and add a protective layer to eliminate noise interference issues, allowing you to enjoy unmatched HiFi sound quality and retain the original sound quality of your headphones.
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