Sennheiser HDB 630 Review: Audiophilia With Trade-Offs

The Sennheiser HDB 630 are not the newest high-end, premium-grade closed-back wireless headphones on the market. In fact, they join a market already crowded with similar audio devices. However, Sennheiser goes beyond a simple single-point audio connection with the HDB 630, offering a package of premium quality and experience, albeit with some trade-offs.

For RM2,599, you receive a hard-shell, polygonal, triangular casing to house the HDB 630. The headphones themselves have a simple design, with a plastic headband and padding made from new "Ideatex Japan leatherette", which is said to be more durable and lightweight than traditional plastic. The weight distribution is well-balanced, ensuring a comfortable fit without feeling heavy. The earcup material is also soft and comfortable for prolonged use.

The HDB 630 features a 42mm dynamic driver in each earcup, setting it apart from most premium wireless headphones. Its Bluetooth module, though not the latest at 5.2, comes with a BTD700 USB-C dongle, providing wired connectivity through a 3.5mm or USB-C cable, and a feature-rich control panel via the Smart Control Plus app. There's only one button on the headset, while the rear of the right earcup functions as a gesture control pad, which can be overly sensitive at times.

In terms of sound quality, the HDB 630 offers a neutral, flat sound out of the box, with stronger lows. The highs and mids are clear and detailed, but some tweaking is necessary through the app for optimal performance. The BTD700 dongle delivers 24-bit/96kHz audio quality, although it might not be ideal for virtual meetings due to voice quality issues. Battery life is impressive, claiming up to 60 hours with ANC on, translating to about 10 hours of daily listening on average.