{"product_id":"sennheiser-hdv-820-headphone-amplifier-507443","title":"Sennheiser HDV 820 Headphone Amplifier | 507443","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 › Headphone Amplifier\u003c\/div\u003e\n\u003csection class=\"eur-hero\"\u003e\u003ch1\u003eSennheiser HDV 820 Headphone Amplifier | 507443\u003c\/h1\u003e\n\u003cp class=\"eur-deck\"\u003eESS 9028PRO SABRE with USB audio plus optical and coaxial S\/PDIF and PCM up to 32-bit\/384 kHz and DSD256.\u003c\/p\u003e\u003c\/section\u003e\u003cdiv class=\"eur-stats\"\u003e\n\u003cdiv class=\"eur-stat\"\u003e\n\u003cstrong\u003eDAC\u003c\/strong\u003eESS 9028PRO SABRE\u003c\/div\u003e\n\u003cdiv class=\"eur-stat\"\u003e\n\u003cstrong\u003eDigital Input\u003c\/strong\u003eUSB audio plus optical and coaxial S\/PDIF\u003c\/div\u003e\n\u003cdiv class=\"eur-stat\"\u003e\n\u003cstrong\u003eHi-Res Support\u003c\/strong\u003ePCM up to 32-bit\/384 kHz and DSD256\u003c\/div\u003e\n\u003cdiv class=\"eur-stat\"\u003e\n\u003cstrong\u003eHeadphone Outputs\u003c\/strong\u003e6.35 mm, 4.4 mm balanced and XLR-4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"eur-section\"\u003e\u003cp\u003eThe Sennheiser HDV 820 Headphone Amplifier is a headphone amplifier designed for audiophile headphones. Its core specification combines ESS 9028PRO SABRE, USB audio plus optical and coaxial S\/PDIF and PCM up to 32-bit\/384 kHz and DSD256. That feature set makes it a practical choice when you want a desktop hi-fi hub for both digital and analogue headphone sources. 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, headphone outputs is 6.35 mm, 4.4 mm balanced and XLR-4, while analogue inputs is Balanced XLR and unbalanced RCA. Frequency Response is specified as 10 Hz to 100 kHz. 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 hi-fi systems and high-resolution digital sources, 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 audiophile headphones.\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\u003eAudiophile headphones\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 hi-fi 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\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eHigh-resolution digital sources\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\u003eDAC\u003c\/h3\u003e\n\u003cp\u003eESS 9028PRO SABRE\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eDigital Input\u003c\/h3\u003e\n\u003cp\u003eUSB audio plus optical and coaxial S\/PDIF\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eHi-Res Support\u003c\/h3\u003e\n\u003cp\u003ePCM up to 32-bit\/384 kHz and DSD256\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eHeadphone Outputs\u003c\/h3\u003e\n\u003cp\u003e6.35 mm, 4.4 mm balanced and XLR-4\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eAnalogue Inputs\u003c\/h3\u003e\n\u003cp\u003eBalanced XLR and unbalanced RCA\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eFrequency Response\u003c\/h3\u003e\n\u003cp\u003e10 Hz to 100 kHz\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 desktop hi-fi hub for both digital and analogue headphone sources. The specification focuses on dac, digital input and hi-res support.\u003c\/p\u003e\n\u003ch3\u003eConnections and Everyday Ownership\u003c\/h3\u003e\n\u003cp\u003eHeadphone Outputs: 6.35 mm, 4.4 mm balanced and XLR-4. Analogue Inputs: Balanced XLR and unbalanced RCA. 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\u003eFrequency Response: 10 Hz to 100 kHz. 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\u003eUnlike a headphone-only analogue amplifier, the HDV 820 combines amplification with a high-resolution digital DAC and multiple balanced and unbalanced connections. Its regional article number also matters because the supplied mains lead varies by market.\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\u003eDAC: ESS 9028PRO SABRE; Digital Input: USB audio plus optical and coaxial S\/PDIF; Hi-Res Support: PCM up to 32-bit\/384 kHz and DSD256.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eur-card\"\u003e\n\u003ch3\u003eConsiderations\u003c\/h3\u003e\n\u003cp\u003eThis is a mains-powered desktop component rather than a portable headphone product; article 507443 is the UK regional variant.\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":54734304837973,"sku":"507443","price":2699.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0924\/6284\/2197\/files\/1019-b5aff18cbb194db9ba470be41865c4d2.jpg?v=1787570507","url":"https:\/\/kingandmoffattretail.com\/products\/sennheiser-hdv-820-headphone-amplifier-507443","provider":"King and Moffatt Euronics","version":"1.0","type":"link"}