Focal Bathys: the first hi-fi noise-cancelling headphones from Focal


Mis à jour le 10 March 2023.

Focal Bathys
The Focal Bathys hi-fi Bluetooth headphones have the same design and transducers as the Focal Celestee headphones, with a very similar sound signature.

The Focal Bathys are the first hi-fi Bluetooth and active noise-cancelling headphones from the French manufacturer. This high fidelity model features 40mm Aluminum/Magnesium “M” dome transducers. Made in France, these transducers equip several of Focal’s world-renowned hi-fi headphones. They should also allow users to make the best use of the headphones’ Bluetooth aptX compatibility and, most importantly, its USB DAC mode (24-bit/192kHz).

Available for €799, are the Focal Bathys sufficiently equipped to face the competition? Will they allow Focal to become a new major player in the high-end noise-cancelling headphone market when up against the Mark Levinson No. 5909 and Apple AirPods Max headphones?

Focal Bathys: packaging & accessories

The Focal Bathys headphones come in a luxurious white cardboard box with a magnetic cover. When open, it reveals a very elegant hard carry case that is covered with heather gray fabric. The case holds the Focal Bathys headphones, which are laid flat, a USB-C cable and a mini-jack cable. The manufacturer also includes a quick start guide and a leaflet presenting the Focal brand and collections.

Focal Bathys: packaging and accessories
The Focal Bathys headphones come with a hard carry case containing a USB-C cable and a mini-jack cable.

Focal Bathys: presentation

The Bathys are the first active noise-cancelling Bluetooth headphones in Focal’s catalog. The French manufacturer previously impressed us in 2017 with the Focal Listen Wireless, the aptX Bluetooth version of the excellent Focal Listen. The Focal Bathys are a clear step up with their premium look. The similarities with the Focal Celestee and Focal Stellia headphones are instantly evident. Their spec sheet also looks very promising.

Focal Bathys: 3/4 view
The design of the Focal Bathys headphones is heavily inspired by that of the Focal Celestee, without the leather on the outside of the earcups. The new headphones also stand out with the illuminated LED logo (the intensity of which can be adjusted in the app).

Premium design

The structure of the Focal Bathys uses the same materials as the transducers. Aluminum (ear pieces and headband) and magnesium (yokes) make the headphones both robust and lightweight. The outer shell of the earpieces has the same pattern as the Celestee and Stellia models. The Focal Bathys clearly confirm their place in the French manufacturer’s premium range. However, they have a distinctive feature that reveals their connectivity: the Focal logo in the center of the earpieces lights up on demand.

Focal Bathys: logo
The illuminated Focal logo at the center of the earpieces is very impressive!

Comfort is of the utmost importance to Focal. Here, it is evident in the memory foam padding of the headband and earpads. The former is covered with real leather on the top and microfiber fabric underneath. The latter feature very soft and comfortable leather that also provides excellent passive isolation. The headphones’ weight of 350 grams is perfectly distributed over the top of the head.

Focal Bathys: headband detail
The Focal Bathys’ headband is padded with memory foam. It is covered with leather on the top and microfiber fabric where it is in contact with the user’s head.
Focal Bathys: earpads
The thick and plush memory foam of the earpads is covered with a smooth, soft-touch leather. 

The Focal Bathys feature the same transducers as the Focal Clear, Focal Elegia, Focal Celstee and Focal Radiance headphones. Made in France, these transducers feature a proprietary M-shaped diaphragm. The latter benefits from the acoustic research carried out for the excellent Focal Utopia open-back headphones. The Focal Bathys do not hide their high fidelity aspirations.

The development of the signal processing and software was overseen by Naim Audio. The two brands have been associated since 2011 within the Vervent Audio group. Consequently, the Focal Bathys headphones feature a Hi-Res DAC compatible with 24-bit/192kHz PCM streams (in USB DAC mode). They also incorporate an amplification module and a DSP that are both optimized to fully harness the acoustic qualities of the Focal transducer. Naim and Focal have also developed a specific application to easily adjust the various settings.

Focal Bathys: control buttons
The Focal Bathys don’t have a touch-sensitive control interface, but they do feature easily accessible and identifiable buttons.

Active noise cancellation

These Focal headphones feature two levels of active noise cancellation. Soft, for moderate noise reduction and Silent for total noise reduction. The latter plunges the listener into complete silence to ensure total immersion in their music. The transparency mode allows them to hear outside sounds through the headphones.

A button on the left earpiece allows you to switch from one mode to the other. It is also possible to use the app to select one of these modes. It is a shame that you cannot adjust the level of noise cancellation more gradually, as is the case with certain competing models.

Focal Bathys: ANC settings in the app
The Focal Bathys offer two modes of active noise cancelling with a transparency setting to hear surrounding noise without removing the headphones.

Lastly, these headphones use the Qualcomm Clear Voice Capture technology to optimize the quality of phone calls. It reduces wind noise and ambient noise so that you can always be heard clearly.

Bluetooth and hi-fi headphones

With Bluetooth connections, the Focal Bathys headphones benefit from the quality of the aptX and aptX Adaptive codecs. The latter maximizes the transmission quality in real time in relation to the environment, offering a quality similar to that of aptX HD (with which it is backward compatible).

Focal Bathys: Bluetooth aptX
The Focal Bathys headphones are compatible with aptX and aptX Adaptive Bluetooth for incredibly precise wireless sound.

To enjoy the full extent of the Focal Bathys’ acoustic qualities, users can use the USB DAC mode. To do so, you must connect the headphones to the USB port of a computer, smartphone or tablet and select them as the playback device. The 24-bit/192kHz PCM compatible internal DAC then allows you to listen to your favorite music in high resolution.

Focal Bathys: USB-C port and mini-jack connector
The Focal Bathys headphones are equipped with a mini-jack connector so you can listen to wired sources. They also offer a USB DAC mode via their USB-C connector. 

Equipped with a mini-jack connector, the Focal Bathys headphones can be paired with any non-Bluetooth audio source that has a headphone output. In this situation, the headphones must still be turned on, as they cannot be used in passive mode if they are turned off or if the battery is flat.

Bluetooth headphones require a rechargeable battery. The battery used in the Focal Bathys headphones provide an autonomy of at least 30 hours in Bluetooth mode and with the active noise cancelling activated. It can even reach over 35 hours in mini-jack mode and 42 hours in USB DAC mode with a smartphone. Moreover, charging the headphones for 15 minutes provides an extra 5 hours of battery life.

Focal Bathys: key specifications

  • Closed-back over-ear headphones
  • 40mm aluminum/magnesium transducers
  • Frequency response: 15Hz to 22kHz
  • Active noise cancellation + transparency mode
  • Bluetooth multipoint 5.1
  • SBC, AAC, aptX Adaptive
  • USB DAC mode (24-bit/192kHz PCM)
  • Battery life: 30h (BT + ANC)
  • Hard carry case
  • Weight: 350g

See all the characteristics of the Focal Bathys

Focal Bathys : mise en œuvre

For our review, we paired the Focal Bathys headphones to an Android smartphone via Bluetooth. This allowed us to test the aptX transmission to read Hi-Res music from Qobuz. We were also able to test the quality of phone calls in a noisy environment. 

In addition, we tried the Focal Bathys’ USB DAC mode with two different sources. First by connecting the headphones to our smartphones to listen to Qobuz via the USB Audio Player Pro app. Then by connecting them to a computer to listen to Qobuz with the Audirvana and Roon interfaces. The headphones we received for the review were brand-new, so we let them run for around thirty hours to break them in.

Focal Bathys: USB DAC mode with Audirvana
We enjoyed the Focal Bathys USB DAC mode with a laptop from the Audirvana application, but also via Roon.

Focal Bathys: our impressions

As soon as we unboxed them, we were very impressed by the build quality and the silhouette of the Bathys headphones. They weren’t quite as beautiful as the Celestee or Stellia models, which are embellished with colored leather on the earcups. They looked good regardless, especially when the Focal logo on the earpieces was lit up!

The Focal Bathys and their case
As soon as they were unboxed, the Focal Bathys headphones were captivating with their design and premium finish (aluminum, magnesium, leather).

Bluetooth mode, noise cancellation

Once the headphones are turned on, a long press on the Bluetooth button activates the pairing mode. You can then open the Focal & Naim app to access the various settings.

An equalizer lets you adjust five frequency ranges within a range of +/- 6 dB, in increments of 0.5 dB. Three equalization modes are defined by default: None (flat), Home and Loudness. The app allows the memorization of several customized equalization modes.

Focal Bathys: EQ
The Focal and Naim app allowed us to adjust the headphones’ sound over 5 frequency ranges (+/-6 dB) in increments of 0.5 dB.

A dedicated button lets you adjust the noise cancelling and transparency mode. The latter diffuses the external sounds in the earpieces. Very effective, it allowed us to distinctly hear the vehicles in town and to remain aware of where they were on the road.

Focal Bathys: ANC and transparent mode button
The button dedicated to the noise cancelling and the transparent mode is placed on the left earpiece of the Focal Bathys headphones.

The Focal Bathys offers two ANC presets. The Soft mode provides moderate noise reduction and the Silent mode offers much greater isolation. Unfortunately, it isn’t possible to adjust the noise cancellation gradually, as is the case with the Technics EAH-A800, for example. In the city, the Silent mode was very effective at drastically reducing the sound of the traffic. In public transport, it erased the sound of the engine and the din of the passengers very efficiently.

The Soft mode was ideal for eliminating the hum of computers and air conditioning in an open space office, without completely isolating us from our colleagues.

The management of telephone calls with Clear Voice Capture technology was extremely efficient. On the riverside during rush hour, our callers could hear us very clearly. Despite the many vehicles passing by and the wind sweeping along the banks of the river, we were able to converse without difficulty.

Music listening sessions

This may be stating the obvious, but the Focal Bathys offered a very different sound signature depending on the equalization selected in the app. The Loudness mode enhanced the high frequencies (+2.5 dB) and bass (+1.5 dB) while reducing the mids (-3 dB). It may be useful in transport, but we found it to be a little too over the top. 

For daily use in Bluetooth mode, on the street or in the office, we preferred the None mode. Although it set all the sliders to zero, it provided a rich and lively listening experience. The sound was dynamic, with powerful bass, detailed highs and vibrant, warm mids. With these qualities, the Focal Bathys is clearly among the best noise-cancelling Bluetooth headphones, regardless of price.

Focal Bathys: on/off and DAC switch
The USB DAC mode allowed us to enjoy Hi-Res audio files up to 24-bit/192kHz with a smartphone or computer.

It was in USB DAC mode that the Bathys headphones revealed their full potential, as long as we were using a bit perfect playback application. You can either stick with the neutral (None) EQ mode for engaging and punchy bass, or switch to the Home EQ mode. The latter provides a more neutral sound signature that is more similar to the manufacturer’s wired hi-fi headphones. 

Whether they were connected to a smartphone or a computer, the Bathys headphones offered a more precise and detailed reproduction in USB DAC mode than in Bluetooth mode. The dynamic range was wider, the vocals and the instruments more distinct. The soundstage was three-dimensional and vast, and the overall balance was even better. The bass sounded tighter and more nuanced. The midrange seemed more organic and the high frequencies even more accurate. We enjoyed the typical Focal sound: rich, engaging, detailed and well balanced  with a wide bandwidth.

Focal Bathys: compared to…

Mark Levinson N° 5909

Mark Levinson N° 5909
€200 more expensive, the Mark Levinson headphones are aptX Adaptive and LDAC compatible. They are a little less fun to listen to than the Focal Bathys, which offer more substance and vitality.

€200 more expensive, the Mark Levinson N° 5909s are compatible with the LDAC codec as well as aptX Adaptive. They can also be used in passive mode, even when the battery is flat, which isn’t possible with the Focal pair. However, the ANC of the latter is more effective, both for music and phone calls. Soundwise, both headphones offer a clear, detailed sound. They effectively separate the different elements of the soundstage and offer good spatialization.

The spatialization of the Focal headphones is slightly more three-dimensional. They offer nice depth and more width than the American headphones. The balance of the Bathys is also more expressive in the lows, bringing more substance and texture to the listening experience. Finally, the equalizer offers the possibility to customize the sound of the Bathys more accurately than the more limited Bass Contour function of the Mark Levinson pair.

Apple AirPods Max

Apple AirPods Max
The AirPods Max offer a great performance, but the Bathys are superior with a quality that is more in keeping with the standards of high fidelity. They are also more comfortable.

Praised by the press and acclaimed by Apple users, the AirPods Max deliver clear, detailed sound with good spatialization and effective noise cancellation. The Focal headphones deliver a more accurate sound and are more effective in providing a realistic and engaging soundstage. The Apple DSP may be excellent, but the limitation of the AAC codec is noticeable in Bluetooth mode. In terms of comfort, the Focal Bathys also win the match with a better weight distribution and ear pads that do not make your ears warm. Finally, Focal’s USB DAC mode allows them to offer a hi-fi performance that the AirPods Max cannot match.

Focal Bathys: who are they for?

The Focal Bathys will appeal to those looking for expressive and dynamic hi-fi Bluetooth headphones with effective active noise cancelling. Their very attractive design, long battery life and excellent phone call quality will further persuade them.

Musical, long-lasting, with efficient noise cancellation and effective call management, even in a noisy environment, the Focal Bathys headphones have plenty to offer.

Focal Bathys: conclusion

Focal seems to have found the ideal formula for its first Bluetooth hi-fi headphones with noise cancellation. The structure and transducers that have been tried and tested on the brand’s high-fidelity models give the Focal Bathys all the qualities expected of premium headphones. They are beautiful and comfortable, the sound is energetic, rich and very lively. The music is expressed with great smoothness and immerses the listener in a very immersive sound experience. 

The aptX Adaptive compatibility, the excellent call quality and the effective active noise cancelling also impressed us.

With the Focal Bathys, the French manufacturer offers an excellent pair of hi-fi Bluetooth headphones with active noise cancellation that will most likely appeal to a wide audience. 

We liked

  • The design and comfort
  • The lively and very immersive sound
  • The noise cancellation and phone call quality
  • The USB DAC mode
  • The quick charging

We would have liked

  • A more gradual adjustment of the ANC
  • To have been able to use them in mini-jack wired mode without the battery

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Acheteur-vendeur de produits high-tech d'occasion avant de rejoindre Son-Vidé en 2007, j'ai pu tester nombre d'amplis, enceintes, casques, TV, vidéoprojecteurs et autres baladeurs... Passionné de films et de séries, de musique et de nouvelles technologies, je me suis spécialisé dans les domaines de la TV, de la vidéoprojection et du home-cinéma. J'aime regarder des films en famille sur très grand écran, au cinéma ou à la maison, et j'apprécie aussi d'écouter de la musique sur un bon système hi-fi, bien calé dans un fauteuil, ou en balade avec un casque sur les oreilles.

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