{"product_id":"sennheiser-hd-820-closed-back-headphones-507435","title":"Sennheiser HD 820 Closed-Back Headphones | 507435","description":"\u003cstyle\u003e\n.eur-wrap{font-family:Arial,Helvetica,sans-serif;color:#16324a;line-height:1.55;max-width:1180px;margin:0 auto}\n.eur-wrap *{box-sizing:border-box}.eur-breadcrumb{font-size:13px;color:#5b7083;margin:0 0 14px}\n.eur-hero{background:linear-gradient(135deg,#003B71,#005CB9);color:#fff;padding:30px;border-radius:14px}\n.eur-hero h1{font-size:30px;line-height:1.2;margin:0 0 10px}.eur-deck{font-size:17px;margin:0;max-width:850px}\n.eur-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:16px 0}\n.eur-stat,.eur-card{background:#F2F7FC;border:1px solid #dbe8f3;border-radius:10px;padding:14px}\n.eur-stat strong{display:block;color:#003B71;font-size:13px;margin-bottom:4px}\n.eur-section{margin:24px 0}.eur-section h2,.eur-section h3{color:#003B71;margin:0 0 10px}\n.eur-quote{border-left:4px solid #FFD200;background:#F2F7FC;padding:14px 16px;margin:18px 0;font-weight:700;color:#003B71}\n.eur-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.eur-grid6{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}\n.eur-card h3{font-size:16px;margin:0 0 6px;color:#005CB9}.eur-card p{margin:0}\n.eur-verdict{display:grid;grid-template-columns:1fr 1fr;gap:12px}.eur-verdict .eur-card:first-child{border-top:3px solid #005CB9}.eur-verdict .eur-card:last-child{border-top:3px solid #FFD200}\n@media(max-width:760px){.eur-stats,.eur-grid3,.eur-grid6,.eur-verdict{grid-template-columns:1fr}.eur-hero{padding:22px}.eur-hero h1{font-size:25px}}\n\u003c\/style\u003e\u003cdiv class=\"eur-wrap\"\u003e\n\u003cdiv class=\"eur-breadcrumb\"\u003eHome › Audio › Headphones\u003c\/div\u003e\n\u003csection class=\"eur-hero\"\u003e\u003ch1\u003eSennheiser HD 820 Closed-Back Headphones | 507435\u003c\/h1\u003e\n\u003cp class=\"eur-deck\"\u003eClosed-back over-ear with 56 mm Ring Radiator transducer and 6 Hz to 48 kHz.\u003c\/p\u003e\u003c\/section\u003e\u003cdiv class=\"eur-stats\"\u003e\n\u003cdiv class=\"eur-stat\"\u003e\n\u003cstrong\u003eAcoustic Design\u003c\/strong\u003eClosed-back over-ear\u003c\/div\u003e\n\u003cdiv class=\"eur-stat\"\u003e\n\u003cstrong\u003eDriver\u003c\/strong\u003e56 mm Ring Radiator transducer\u003c\/div\u003e\n\u003cdiv class=\"eur-stat\"\u003e\n\u003cstrong\u003eFrequency Response\u003c\/strong\u003e6 Hz to 48 kHz\u003c\/div\u003e\n\u003cdiv class=\"eur-stat\"\u003e\n\u003cstrong\u003eImpedance\u003c\/strong\u003e300 ohms\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"eur-section\"\u003e\u003cp\u003eThe Sennheiser HD 820 Closed-Back Headphones is a headphone designed for home listening. Its core specification combines Closed-back over-ear, 56 mm Ring Radiator transducer and 6 Hz to 48 kHz. That feature set makes it a practical choice when you want a straightforward wired listening setup with no charging or pairing required. The emphasis stays on stated hardware and connection details, making it easy to see where this model fits in a real listening or home-entertainment setup.\u003c\/p\u003e\n\u003cp\u003eFor day-to-day ownership, impedance is 300 ohms, while connections is 6.35 mm unbalanced and 4.4 mm balanced cables. Enclosure is specified as Concave Gorilla Glass reflector covers. Those details shape how the product connects, how it is used and what you need from the rest of your system. It is best suited to desktop audio and wired music systems, with the exact Sennheiser model features kept front and centre so you can choose it for the capabilities that actually matter.\u003c\/p\u003e\n\u003cdiv class=\"eur-quote\"\u003eA clear, specification-led choice for home listening.\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"eur-section\"\u003e\u003ch2\u003eIdeal For\u003c\/h2\u003e\n\u003cdiv class=\"eur-grid3\"\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eHome listening\u003c\/h3\u003e\n\u003cp\u003eWell suited to this use based on the model’s stated design and connections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eDesktop audio\u003c\/h3\u003e\n\u003cp\u003eWell suited to this use based on the model’s stated design and connections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eWired music systems\u003c\/h3\u003e\n\u003cp\u003eWell suited to this use based on the model’s stated design and connections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"eur-section\"\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"eur-grid6\"\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eAcoustic Design\u003c\/h3\u003e\n\u003cp\u003eClosed-back over-ear\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eDriver\u003c\/h3\u003e\n\u003cp\u003e56 mm Ring Radiator transducer\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eFrequency Response\u003c\/h3\u003e\n\u003cp\u003e6 Hz to 48 kHz\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eImpedance\u003c\/h3\u003e\n\u003cp\u003e300 ohms\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eConnections\u003c\/h3\u003e\n\u003cp\u003e6.35 mm unbalanced and 4.4 mm balanced cables\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eEnclosure\u003c\/h3\u003e\n\u003cp\u003eConcave Gorilla Glass reflector covers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"eur-section\"\u003e\u003ch3\u003eDesigned Around the Right Use Case\u003c\/h3\u003e\n\u003cp\u003eA straightforward wired listening setup with no charging or pairing required. The specification focuses on acoustic design, driver and frequency response.\u003c\/p\u003e\n\u003ch3\u003eConnections and Everyday Ownership\u003c\/h3\u003e\n\u003cp\u003eImpedance: 300 ohms. Connections: 6.35 mm unbalanced and 4.4 mm balanced cables. These are the details that determine how the product works with the rest of a setup.\u003c\/p\u003e\n\u003ch3\u003eControl and Practical Detail\u003c\/h3\u003e\n\u003cp\u003eEnclosure: Concave Gorilla Glass reflector covers. This keeps the ownership experience grounded in the functions built into this exact model.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"eur-section\"\u003e\u003ch2\u003eHow It Compares\u003c\/h2\u003e\n\u003cp\u003eThis wired headphone keeps the signal path simple and does not depend on Bluetooth pairing or battery charging. Its acoustic design, impedance, connection and cable arrangement are the most useful comparison points.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"eur-section\"\u003e\u003ch2\u003eThe Verdict\u003c\/h2\u003e\n\u003cdiv class=\"eur-verdict\"\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eStrengths\u003c\/h3\u003e\n\u003cp\u003eAcoustic Design: Closed-back over-ear; Driver: 56 mm Ring Radiator transducer; Frequency Response: 6 Hz to 48 kHz.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eConsiderations\u003c\/h3\u003e\n\u003cp\u003eThis is a wired product, so the source device needs the stated connector or a suitable compatible adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":54734304379221,"sku":"507435","price":1999.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0924\/6284\/2197\/files\/Sennheiser_HD_820_Closed_Back_Audiophile_Headphones_Main_Image.png?v=1787570508","url":"https:\/\/kingandmoffattretail.com\/products\/sennheiser-hd-820-closed-back-headphones-507435","provider":"King and Moffatt Euronics","version":"1.0","type":"link"}