Sennheiser’s HDB 630 enters a competitive market segment, offering a feature-rich, portable wireless headphone with impressive battery longevity and flexible connection options, but with some compromises on noise control and ergonomics.
Sennheiser’s HDB 630 enters one of the most crowded parts of the headphone market: premium wireless, closed-back over-ears aimed at buyers who want both convenience and serious sound. Priced at RM2,599 in the Lowyat review, the model makes its case not through flashy industrial design, but through a package built around audio tuning, wired flexibility and unusually long battery life. Other reviews have reached a similar conclusion, describing it as a feature-heavy headphone that is trying to win over listeners who care as much about configuration options as they do about out-of-box tuning.
The hardware reflects that approach. According to the Lowyat review, the HDB 630 ships in a hard shell case and uses a largely plastic frame with Ideatex Japan leatherette on the headband and earcups. Internally, it uses 42mm dynamic drivers. Connectivity is broader than on many rivals: Bluetooth 5.2, a BTD700 USB-C dongle, 3.5mm analogue input and USB-C audio are all part of the package, while the Smart Control Plus app handles more advanced adjustment. Tom’s Guide, What Hi-Fi? and SoundGuys all point to the bundled dongle as one of the headset’s most distinctive features, particularly for users who want higher-quality wireless playback from devices that do not support the desired codec natively.
On sound, the assessments are more nuanced. Lowyat found the HDB 630’s default tuning to be notably neutral, with bass that is present but not overpowering, and mids and treble that remain clear without becoming harsh. That view broadly aligns with RTINGS, CHIP.de and SoundGuys, which describe the sound signature as balanced and detailed, though not especially exaggerated in the low end. In practice, the headphone appears to reward user adjustment: several reviews highlight the value of the app-based equaliser, while Tom’s Guide also points to Sennheiser’s Crossfeed feature, which blends stereo information in a way that can make headphone playback feel more speaker-like.
Battery life is another major selling point. Sennheiser claims up to 60 hours with active noise cancellation enabled, and Lowyat’s day-to-day use largely backs that up, estimating several days of heavy listening before a recharge is needed. RTINGS places the figure at up to 54 hours, still comfortably ahead of many premium rivals, while What Hi-Fi? and Tom’s Guide also single out endurance as a key strength. That battery performance matters because it supports the HDB 630’s broader pitch: this is not just a wireless headphone, but one designed to be used as a portable listening system across Bluetooth, USB-C and wired modes.
The main compromises are in ergonomics and noise control. Lowyat criticised the touch surface on the right earcup for being overly sensitive and inconsistent in some gestures, while also saying the active noise cancellation and ambient mode trail the best in class. RTINGS is more positive on ANC overall, though it notes that low-bass noise is harder to suppress, suggesting the HDB 630 is competent rather than class-leading in this area. There is also disagreement on comfort: Lowyat found the headband tension noticeable over long sessions, whereas SoundGuys and RTINGS regard comfort as one of the headset’s strengths. Taken together, the wider review picture suggests that the HDB 630 is best understood as a sound-first, feature-rich model with a premium price and a few execution issues, rather than an all-rounder that dominates every category.
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