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The Sennheiser HDB 630 is a closed-back wireless headphone built for audiophile sound on the go. It uses a 42 mm in-house transducer for a neutral, detailed presentation, and includes a BTD 700 USB-C Bluetooth dongle for high-resolution aptX HD and aptX Adaptive streaming. A parametric EQ and crossfeed give fine control over the sound, while adaptive noise cancellation and a long battery life make it a capable travel companion. It suits listeners who want wired-grade fidelity without cables and who value tuning flexibility over the bass-heavy tuning of many mainstream rivals.
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The Sennheiser HDB 630 is a closed-back wireless headphone built for high-resolution listening. It uses Sennheiser's in-house 42 mm transducer, with a deep back volume and an acoustic mesh in the baffle. The sound is neutral, with detailed mids and a wide soundstage.
It connects over Bluetooth with aptX HD and aptX Adaptive support. The included BTD 700 Bluetooth USB C dongle adds aptX Adaptive for devices that don't support it, such as many phones, tablets and laptops. For a wired signal, connect by USB C or by the included audio cable to any 3.5 mm jack. Wired listening supports lossless audio at up to 24 bit/96 kHz.
Adaptive noise cancellation reduces distractions, and a transparency mode lets you hear your surroundings. The Smart Control Plus App includes a parametric equalizer, where you set the frequency, bandwidth and filter type. A crossfeed feature balances hard-panned tracks by blending instruments from one channel into the other for a more natural stereo image. Battery operation lasts up to 60 hours.
