Sennheiser HD820 Closed-Back Headphones Pre-Owned and treble is smooth and

and treble is smooth and detailed without any brightness or grain

built from enameled silver-plated copper conductors with custom MMCX connectors

5mm TRRS input connectors for compatibility with a range of high-end cables

Free Air Structure housing minimizes internal reflections for a more open and natural presentation

Sennheiser HD820 Closed-Back Headphones Pre-Owned and treble is smooth andSennheiser's flagship closed back headphone, the HD 820 uses Gorilla Glass ear cup covers with a concave design borrowed from reflector telescope technology to redirect sound reflections away from the driver. The result is a closed back headphone that sounds unlike any other. Type and Technology Over ear, closed back, dynamic. 56mm ring radiator transducer derived directly from the HD 800S, with concave Gorilla Glass ear cup covers that manage