The catch
Focal Bathys
Bluetooth ANC rated at up to 30 hours is a manufacturer maximum. Playing over the analog cable still draws on the battery, and jack mode has no microphone.
Side by side
Focal Bathys vs Sennheiser HDB 630 Compared: Bathys takes 192 kHz USB, HDB includes a wireless transmitter
Quick verdict
The BTD 700 transmitter comes with HDB 630, and Bathys takes USB PCM up to 192 kHz. HDB is the one when you need a wireless source for a compatible laptop, or documented USB charge-and-play. Bathys is the one for that specific higher-rate input requirement, or for a fit and sound you prefer once you’ve tried it. With an empty battery, neither works passively, and Bathys USB calls exclude iOS.
Before you buy
Why, and what it costs you
A transmitter in the package can fix the source you already have
In a wireless music setup, the weak link is often the phone or work laptop. Headphones that support aptX do not give the source that codec. HDB 630 comes with a BTD 700 transmitter for compatible USB devices, so there is a documented path that skips the computer’s built-in Bluetooth codec. Bathys can connect over USB directly, but then you are tied to the device. If you wander between your desk and a kitchen nearby, ask whether keeping that freedom is worth giving up a USB port and looking after the transmitter. Neither option promises range through walls.
Where this comes from
This combines what is in the package and which sources are compatible with moving around during a workday. You still need to check USB data compatibility and which accessories your work device permits. We make no claim of a universal codec or any wireless range.
The catch
Sennheiser HDB 630
Listening over USB means disconnecting Bluetooth. Its rating of up to 60 hours falls to up to 45 hours in the documented high-resolution wireless mode.
Focal Bathys
- Why pick it
- Your compatible USB source has to deliver 192 kHz PCM directly, and the unsupported 176.4 kHz format is a separate matter.
- You’ve tried the 350 g fit on and like its physical button controls.
- The catch
- Bluetooth ANC rated at up to 30 hours is a manufacturer maximum. Playing over the analog cable still draws on the battery, and jack mode has no microphone.
Sennheiser HDB 630
- Why pick it
- The supplied BTD 700 should give you a compatible wireless source, so you aren’t depending on the codecs built into your laptop or phone.
- Documented USB charge-and-play is a must, and Bluetooth can be disconnected for USB listening.
- The catch
- Listening over USB means disconnecting Bluetooth. Its rating of up to 60 hours falls to up to 45 hours in the documented high-resolution wireless mode.
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What this page compares
Focal Bathys and Sennheiser HDB 630 for laptop music, phone switching and long workdays, with transmitter setup, charging and cable-mode call restrictions set side by side.
Both are meant for people who want a single closed wireless pair that handles travel and attentive listening at a desk. How each one handles sources and power can count for more than the driver descriptions.
Which one fits
Pick the situations that sound like you
A supplied wireless USB transmitter is what your source needs
BTD 700 comes with HDB. Check for a compatible USB data port and what your workplace allows.
- Focal Bathys
- Caution
- Sennheiser HDB 630
- Better fit
You specifically need direct 192 kHz PCM input
Bathys takes 192 kHz, while HDB’s documented USB limit is 96 kHz.
- Focal Bathys
- Better fit
- Sennheiser HDB 630
- Not suitable
You want to play music over analog with the headphone uncharged
Analog playback needs power on both.
- Focal Bathys
- Not suitable
- Sennheiser HDB 630
- Not suitable
You want documented USB charge-and-play while at your desk
HDB states support for it outright. Focal’s charging instructions contradict each other, so we make no matching promise.
- Focal Bathys
- Depends
- Sennheiser HDB 630
- Better fit
In practice
Differences you will notice
A transmitter in the package can fix the source you already have
In a wireless music setup, the weak link is often the phone or work laptop. Headphones that support aptX do not give the source that codec. HDB 630 comes with a BTD 700 transmitter for compatible USB devices, so there is a documented path that skips the computer’s built-in Bluetooth codec. Bathys can connect over USB directly, but then you are tied to the device. If you wander between your desk and a kitchen nearby, ask whether keeping that freedom is worth giving up a USB port and looking after the transmitter. Neither option promises range through walls.
How we worked this out
This combines what is in the package and which sources are compatible with moving around during a workday. You still need to check USB data compatibility and which accessories your work device permits. We make no claim of a universal codec or any wireless range.
Your listening mode can eat into the battery margin you thought you had
If the headphones cover your commute and most of a workday, do not assume HDB’s 60-hour headline applies in every mode. Sennheiser rates high-resolution wireless listening through BTD 700 separately, at up to 45 hours, which is 25% below its own stated maximum. Bathys is rated at up to 30 hours with Bluetooth ANC, and the published conditions are different. HDB also documents USB charge-and-play, handy at the desk before your next trip. An analog lead still needs power on both, so having the cable in your bag is no replacement for checking the charge before you leave.
How we worked this out
(60 minus 45) divided by 60 = 25%, using only HDB’s manufacturer figures. Runtime conditions differ between brands, so we claim no measured endurance ratio and no guaranteed workweek.
What a cable does for music is not what it does for meetings
On a computer, Bathys takes compatible USB calls, so writing it off as music-only would be a mistake. Its FAQ does rule out iOS calls, though, and using the analog input switches the microphone off. HDB documents both USB audio and microphone use, but its USB setup means disconnecting Bluetooth. If you bounce between work meetings and personal phone calls, do not buy either one expecting wired laptop audio to blend with phone Bluetooth. Lean on Bluetooth multipoint if that back-and-forth is your routine, or try the USB application you plan to use and accept that the source changes. The higher USB sampling ceiling on Bathys does nothing for call routing.
How we worked this out
This weighs microphone support in each mode and the documented connection changes against a mix of work and personal calls. We do not extend any iOS USB-call promise to HDB, since none is supported, and we claim no conferencing certification.
Plug in your setup
Which headphones suit the way you listen?
Start with how you listen. Charging over USB is not the same as playing audio over USB, and some headphones need power even on a cable. These answers are placeholders until you apply your own.
Focal Bathys
Passes these checksPlays over Bluetooth.
Sennheiser HDB 630
Passes these checksPlays over Bluetooth.
Battery figures are maker claims for the stated mode. They do not reflect measured travel time. Volume, codec, calls and battery age all change runtime. Closed earcups can still leak some sound. Weight alone does not predict comfort. USB audio needs a compatible source and cable. This check does not judge sound quality, mic quality or amplifier power.
Option A
Focal, FOAHALNOMB0B800 Deep Black
Bathys
Your compatible USB source has to deliver 192 kHz PCM directly, and the unsupported 176.4 kHz format is a separate matter.
- Best for
- Your compatible USB source has to deliver 192 kHz PCM directly, and the unsupported 176.4 kHz format is a separate matter.
Facts we checked
- Source equipment: Bluetooth or direct USB, no transmitter in the listed package
- Wired digital input: Up to 24-bit/192 kHz, not 176.4 kHz
- Long-day power: Up to 30 h Bluetooth ANC, no passive analog
- Calls and desk use: Compatible USB calls except iOS, no jack mic
Option B
Sennheiser, 700445
HDB 630
The supplied BTD 700 should give you a compatible wireless source, so you aren’t depending on the codecs built into your laptop or phone.
- Best for
- The supplied BTD 700 should give you a compatible wireless source, so you aren’t depending on the codecs built into your laptop or phone.
Facts we checked
- Source equipment: BTD 700 transmitter included, plus direct USB
- Wired digital input: Up to 24-bit/96 kHz
- Long-day power: Up to 60 h standard resolution or 45 h hi-res, no passive analog
- Calls and desk use: USB audio and microphone, documented USB charge-and-play
Spec by spec
Where they really differ
| Spec | Focal Bathys | Sennheiser HDB 630 | In practice |
|---|---|---|---|
| Source equipment | Bluetooth or direct USB, no transmitter in the listed package | BTD 700 transmitter included, plus direct USB | Look at the entire source chain as well as the headphone’s codec. |
| Wired digital input | Up to 24-bit/192 kHz, not 176.4 kHz | Up to 24-bit/96 kHz | Supporting a higher input rate is about compatibility. It does not prove the sound is better. |
| Long-day power | Up to 30 h Bluetooth ANC, no passive analog | Up to 60 h standard resolution or 45 h hi-res, no passive analog | Tie every endurance claim to the listening mode it was rated in. |
| Calls and desk use | Compatible USB calls except iOS, no jack mic | USB audio and microphone, documented USB charge-and-play | Try your work application, and remember the source changes it requires. |
Trade-offs
What each pick costs you
With Focal Bathys
- Changing EQ requires the app over Bluetooth. We do not promise uninterrupted charge-and-play, since Focal’s manual and FAQ word it in conflicting ways.
With Sennheiser HDB 630
- The transmitter occupies a compatible USB data port. The aptX features it includes do not give HDB 630 aptX Lossless reception.
Change of plan
When the answer changes
A supplied compatible transmitter and a charging routine deal with your daily problem
Go with Sennheiser HDB 630. HDB documents both, and gives hi-res listening its own runtime limit.
The input you need is specifically 192 kHz PCM
Go with Focal Bathys. Bathys accepts that input, though that does not prove you will hear a benefit.
Decision guide
Before you buy
A better music connection shouldn’t turn every meeting, phone call or low-battery warning into a setup chore.
What this page can’t tell you
- We claim no measured superiority in sound, isolation, call quality or latency. Compatibility with high-resolution input doesn’t prove an audible benefit or support for every console.
By the numbers
What the data shows
What we found across the headphones we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Focal Bathys |
|
| |
| Sennheiser HDB 630 |
|
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Focal Bathys
Your compatible USB source has to deliver 192 kHz PCM directly, and the unsupported 176.4 kHz format is a separate matter.
You’ve tried the 350 g fit on and like its physical button controls.
See price & reviews on AmazonSennheiser HDB 630
The supplied BTD 700 should give you a compatible wireless source, so you aren’t depending on the codecs built into your laptop or phone.
Documented USB charge-and-play is a must, and Bluetooth can be disconnected for USB listening.
See price & reviews on AmazonEach link opens in a new tab.
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