Sennheiser HD820 reference-grade closed-back headphones in excellent condition. Fully tested and working perfectly. Supplied in original box with all factory accessories: 6.3mm stereo jack cable, balanced 4.4mm Pentaconn cable, XLR-4 adapter, microfiber cleaning cloth, and documentation.

These flagship headphones feature Sennheiser’s innovative glass reflector technology and ring radiator transducers, delivering stunning clarity and realism while maintaining the isolation of a closed-back design. With a wide frequency response (6Hz–48kHz) and 300-ohm impedance, they’re ideal for high-end home listening or studio use.