High-resolution audio on the go isn’t very convenient. It typically involves wired headphones and a DAC (digital-to-analog converter) of some kind, plus your phone or another device to access files or a streaming service. All of this is necessary since Bluetooth compresses an audio signal by design, to allow for low-latency transmission and minimize battery draw. Simply put, wireless headphones haven’t been able to meet the demands of lossless audio, but Sennheiser has come the closest to fulfilling the dream with itsHDB 630 ($500).
Thanks to redesigned drivers, a new acoustic platform and a dongle, the company offers up to 24-bit/96kHz audioon the HDB 630— depending on your configuration. You also get above average active noise cancellation (ANC), a highly customizable EQ, shockingly long battery life and advanced features to fine-tune the headphones to your liking. For some, the best possible sound is still only found on pricey setups and open-back headphones. For everyone else, Sennheiser has provided a taste of the audiophile life in a much more portable package.
Sennheiser/Engadget
Sennheiser moves closer to open-back performance in a set of closed wireless headphones with the HDB 630, but they look more midrange than high-end.
Sennheiser says the HDB 630 “inherited” the same chassis fromits Momentum 4headphones. That’s unfortunate because my biggest complaint with that older model’s redesign is how cheap it looked compared toprevious entriesin the Momentum line. The HDB 630 suffers the same fate, although the splash of silver on the headband and yokes helps thingsa bit.Simply put, these don’t look like a set of $500 headphones, and since they’re $150 more than their predecessor was at launch, they really should have a more premium appearance.
The outside of the right ear cup is still a touch panel where you can swipe, tap and even pinch to control the HDB 630. I don’t recall another set of headphones with a pinch gesture, and I’m still not convinced it’s warranted. The action is used to enable an Adaptive ANC adjustment that allows you to dial in the amount of noise blocking you need. After the pinch, sliding a single finger forwards and backwards fine tunes the mix of ANC and transparency mode. It’s a nice option to have on the headphones themselves, I just think a triple tap to activate it would be easier to master — and remember.
The only other button on the HDB 630 is for power and Bluetooth pairing. Unless you’re frequently connecting these headphones to a new device, you might not be reaching for this control very often. That’s because the HDB 630 goes into standby mode when you take them off before powering down completely after 15 minutes of inactivity. You can extend that window to 30 or 60 minutes if you prefer. And if the headphones still have battery left, you can return to active mode by simply putting them back on your head.
Sennheiser is betting you’ll use the HDB 630 for long listening sessions, so it outfitted these headphones with soft ear pads and a well-cushioned headband. The clamping force is adequate for a proper ANC seal, but never becomes a burden. And despite being around 20 grams heavier than the Momentum 4, this model still feels balanced and doesn’t weigh you down.
While the overall design may be familiar, the sound platform for the HDB 630 is completely new. 42mm drivers offer what Sennheiser says is “neutral sound with lifelike mids, stunning detail and a wide soundstage.” In order to deliver sound quality that’s as close to open-back headphones as possible, the company overhauled the entire acoustic system, from the drivers to the baffle’s transparent mesh, in the name of balance and clarity. And since audiophile headphones typically require a dedicated external amplifier to achieve their full potential, Sennheiser includeda BTD 700 USB-C donglefor high-resolution wireless audio transmission.
When I first put the HDB 630 on, I thought the audio quality was good but not great. Listening over the standard definition SBC codec produced decent results, but it wasn’t anything to write home about. Once I connected to the BTD 700 dongle and unlocked 16-bit/48kHz tunes from Apple Music, though, these headphones really started to impress.
As good as they are, the HDB 630 may not be for everyone. That “neutral” stock tuning places high emphasis on the midrange, so you’ll likely need to make some adjustments to get the bass performance you crave from rock, electronic, hip-hop and other genres driven by low-end tone. While I concede the neutral base is a great starting point, and the HDB 630 does indeed showcase “stunning detail,” I’d argue Sennheiser’s promise of “a wide soundstage” doesn’t always hold true.
These headphones are at their best with more immersive content, like theTRON: Aressoundtrack from Nine Inch Nails. After a slight adjustment, the electronic score had the booming bass it needed, offering driving beats that nearly rattled my brain. All that was layered with rich synths and Trent Reznor’s iconic vocals. The texture and distortion in the instruments came through in greater detail too, something that’s not as apparent on other headphones and earbuds.
Switch over to Thrice’sHorizons/Westand the HDB 630 is a different story. Transitioning from synth-heavy electronic music to a genre like rock causes these headphones to lose some of the immersive character they are capable of delivering. You still get absurd clarity and detail, particularly in Teppei Teranishi’s guitar riffs, but the music sounds slightly flatter and a little less energetic. It’s not bad by any means, but some genres won’t envelope you as much as others do.
You can also use the HDB 630 wired over USB-C for lossless-quality audio.
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Nguồn: https://www.engadget.com/audio/headphones/sennheiser-hdb-630-review-a-sonic-marvel-with-room-for-improvement-150000295.html?src=rss