Discover the world's most refined closed-back listening experience with the SENNHEISER HD 820 Closed-Back Over-Ear Wired Audiophile Headphones. At the heart of the HD 820 are custom 56mm Ring Radiator transducers manufactured in Germany, designed to produce exceptional detail, precision, and ultra-low distortion. Unlike conventional closed-back headphones, the HD 820 uses unique concave Gorilla® Glass ear cup covers that direct sound waves into integrated absorber systems for a remarkably open, spacious sound while maintaining excellent isolation.
Key Features of Sennheiser HD 820
Reference-Grade Closed-Back Audiophile Design
Flagship closed-back tuning delivers high-end sound for environments where open-back leakage isn't acceptable, without sacrificing soundstage or air.
Custom 56mm Ring Radiator Transducers
The same Ring Radiator drivers from Sennheiser's flagship open-back lineup produce ultra-low distortion and an extended frequency response.
Innovative Gorilla® Glass Ear Cup Design
Concave Gorilla Glass covers direct internal reflections into absorber elements, recreating the open feel of an open-back design in a fully closed enclosure.
Wide, Natural Soundstage Presentation
Sound is rendered with a spaciousness rarely heard from a closed-back headphone, producing accurate imaging and convincing instrument placement.
Premium German Engineering and Craftsmanship
Handcrafted in Germany using precision-machined components, the HD 820 is built for a lifetime of high-end listening.
Balanced and Unbalanced Premium Cables
Includes 6.3mm stereo, 4.4mm balanced, and XLR balanced cables — ready for any flagship headphone amplifier or balanced DAC system.
Product Specifications
Brand: Sennheiser
Model: HD 820
Design: Closed-back, over-ear, wired
Driver: 56mm Ring Radiator transducer
Ear Cups: Gorilla® Glass concave
Ear Cushions: Microfibre
Cables: 6.3mm, 4.4mm balanced, XLR balanced
Origin: Handcrafted in Germany
Use Case: Audiophile listening, mastering, critical reference
Pairing: Best with high-quality amplifier or DAC
What's Included
1 × Sennheiser HD 820 Headphones
1 × 6.3mm Stereo Cable
1 × 4.4mm Balanced Cable
1 × XLR Balanced Cable
1 × Storage Box
1 × User Documentation