{"product_id":"sennheiser-hdb-630-headphones","title":"Sennheiser HDB 630 Headphones","description":"\u003cp\u003eWireless over-ear headphones offering high-resolution audio wirelessly or wired. Adaptive noise cancellation, a parametric EQ and crossfeed allow fine tuning, with up to 60 hours of battery life and a supplied hi-res dongle.\u003c\/p\u003e\n\u003ch3\u003eKey Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWireless over-ear headphones w\/ Hi-Res audio\u003c\/li\u003e\n\u003cli\u003eWired and wireless playback up to 24-bit\/96kHz\u003c\/li\u003e\n\u003cli\u003eBTD 700 USB-C Bluetooth dongle included\u003c\/li\u003e\n\u003cli\u003eAdaptive noise cancellation w\/ transparency mode\u003c\/li\u003e\n\u003cli\u003eParametric EQ and crossfeed\u003c\/li\u003e\n\u003cli\u003eUp to 60 hours battery life w\/ noise cancelling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineered for Endurance and Precision\u003c\/h3\u003e\n\u003cp\u003eThe Head Box S3 B is a high-performance headphone amplifier engineered around a distinctive fully balanced topology that pushes expectations within its class. Created for listeners who value analytical accuracy, control, and adaptability, it supports both balanced and single-ended headphones while fitting effortlessly into desktop and traditional hi-fi environments. Every design choice prioritizes signal integrity and usability. Its compact form makes it ideal for serious listening without sacrificing space.\u003c\/p\u003e\n\u003ch3\u003eOptimised Balance Between Power and Sound\u003c\/h3\u003e\n\u003cp\u003eThe primary design objective behind the Head Box S3 B was achieving an ideal equilibrium between output strength and perceived sonic refinement. By carefully tuning amplification stages, it delivers authority without compromising tonal accuracy or musical detail. This thoughtful approach allows the amplifier to outperform typical designs at its price point. The result is a sound signature that feels controlled, natural, and consistently engaging.\u003c\/p\u003e\n\u003ch3\u003eTrue Balanced Signal Architecture\u003c\/h3\u003e\n\u003cp\u003eThe Head Box S3 B employs a completely balanced signal path across both RCA and XLR inputs, maximising channel separation while keeping noise to an absolute minimum. Balanced headphone outputs are provided via 4.4mm Pentaconn and XLR connectors, while single-ended compatibility is maintained through 3.5mm and 6.3mm outputs. This flexibility ensures compatibility with a wide range of headphones. Users can switch between connection types without altering performance integrity.\u003c\/p\u003e\n\u003ch3\u003eBalanced Amplification for Maximum Performance\u003c\/h3\u003e\n\u003cp\u003eBy combining genuine balanced amplification with carefully defined power targets, the Head Box S3 B allows headphones to operate at their intended potential. This design strategy preserves dynamics while preventing unnecessary coloration or distortion. The amplifier maintains clarity even at demanding listening levels. As a result, subtle details and spatial information remain intact.\u003c\/p\u003e\n\u003ch3\u003ePrecision Aluminium Construction\u003c\/h3\u003e\n\u003cp\u003eThe amplifier is enclosed in a high-quality, full aluminium chassis that provides excellent mechanical rigidity and effective electromagnetic shielding. This solid construction reduces vibration and protects sensitive internal components. The enclosure also contributes to long-term reliability and thermal stability. Its understated design complements both modern and classic audio setups.\u003c\/p\u003e\n\u003ch3\u003eEuropean Craftsmanship and Reliability\u003c\/h3\u003e\n\u003cp\u003eManufactured in Europe by experienced technicians, engineers, and designers, the Head Box S3 B reflects decades of accumulated expertise. Precise assembly standards ensure consistent performance and long operational life. The focus on sustainable manufacturing reinforces its durability and long-term value. Every unit is built to meet audiophile expectations without compromise.\u003c\/p\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e311 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (HxWxD)\u003c\/td\u003e\n\u003ctd\u003e222 x 75 x 215 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp Controlled\u003c\/td\u003e\n\u003ctd\u003eSennheiser Smart Control (App Store \/ Google Play)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone Type\u003c\/td\u003e\n\u003ctd\u003eClosed-back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Carry Bag\u003c\/li\u003e\n\u003cli\u003e1x Audio Cable\u003c\/li\u003e\n\u003cli\u003e1x USB-C Cable\u003c\/li\u003e\n\u003cli\u003e1x BTD 700 USB-C Bluetooth Hi-Res dongle\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sennheiser","offers":[{"title":"Black","offer_id":53776135618826,"sku":"SENN-HDB-630-B","price":399.0,"currency_code":"GBP","in_stock":true},{"title":"Silver","offer_id":53776135651594,"sku":"SENN-HDB-630-S","price":399.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3283\/6618\/files\/sennheiser-hdb-630-headphones-50751-1-p_2fd0f64d-6f8c-48fc-b61f-24f079d265d6.jpg?v=1789921338","url":"https:\/\/audioemotion.co.uk\/products\/sennheiser-hdb-630-headphones","provider":"Audio Emotion Limited","version":"1.0","type":"link"}