Press release -

Enjoy superior sound wherever and whenever with Sony’s latest EXTRA BASS™ wireless speakers

  • Enhanced sound quality with the newly developed X-Balanced Speaker Units on the SRS-XB43, SRS-XB33 and SRS-XB23
  • No limits to enjoying your music with water proof, dust proof and shock proof[1] design
  • The new line-up features a fresh design, including the SRS-XB23’s new compact, lightweight and easy to carry design

Sony today refreshed its EXTRA BASSTM wireless speaker line-up with the addition of the SRS-XB43, SRS-XB33 and SRS-XB23. With superb sound quality, toughness and usability at the forefront of the latest designs, you can enjoy superior sound wherever and whenever.

Sound worth sharing


Enjoy deep, punchy bass wherever you are with these latest wireless speakers. EXTRA BASSTM sound is achieved on the XB wireless speaker line up thanks to Sony’s renowned audio technology detailed below.

X-Balance Speaker Unit

Sony’s newly developed X-Balanced Speaker Unit achieves high sound quality and powerful sound pressure for a richer, deeper and more rewarding listening experience. The unit’s non-circular shape maximises the area of the speaker diaphragm, increasing sound pressure for more punchy bass. It also reduces driver excursion while maintaining the same sound pressure, resulting in less distortion. For example, the level of the sound pressure on the XB33 has increased by approx. 30% and distortion rate is reduced by approx. 25% compared to the predecessor model (SRS-XB32).

Unlike the circular diaphragm in a conventional speaker unit, the X-Balanced Speaker Unit in the XB43 features an almost rectangular diaphragm. Its 2-way speaker system combines a woofer for low to mid frequencies with a dedicated tweeter for the higher range frequencies. The result is powerful sound, deep punchy bass and exceptional vocal clarity.

The X-Balanced speaker unit in the XB33 and XB23 features a newly developed non-circular diaphragm and off-centre design. This new design maximises the speaker diaphragm, creating more sound pressure, but keeps the speakers compact in size.

Mica Reinforced cellular(MRC) cone and dust cap

The rigid and lightweight MRC cone and dust cap contributes to the sound quality.

Side Passive radiators

The layout of the side passive radiators has also been optimised across all three models to reproduce clear bass sound.

LIVE SOUND mode[2]

LIVE SOUND mode brings your party to life with a 3-dimensional sound experience as if you were at a live venue.

Do more, worry less

Waterproof, dust proof and rust proof

The new models have an IP67 rating, so you can take your speaker to the beach, the forest, the desert or wherever you like – it will carry on playing no matter how dusty the surface. The speakers are even saltwater resistant so the fun can continue even in the sea!


The speakers[4] have undergone extensive shock testing and thanks to the latest shock-proof durable design, can withstand the inevitable knocks, bumps and scrapes that come with everyday use. Now even the clumsiest of accidents are no longer an issue, even if you drop them, the speakers[5] will keep working[6].

Non-stop fun and new form factor


Add a music festival atmosphere with the speakers' fresh design which now feature multi-colour line, tweeter[8] and speaker lighting.

Fiestable[9]and Sony | Music Centre apps

Use the free of charge “Fiestable” companion app[10] to recreate a lively club feeling straight from your smartphone. Let the lights flash in sync with the beat or change colour.

You can even control the speaker from the dancefloor with the free of charge “Sony | Music Centre” app[11]. You can select your favourite playlist, cue the next song or turn the lighting off to suit your mood.

Party Connect

Plus, with the new Party Connect feature you can connect up to 100 compatible wireless speakers[12] with BLUETOOTH® technology to sync the music and lights so everyone dances to the same beat.

New form factor

The new speaker line-up comes in a wide range of colours with a refreshed design, perfectly complimenting any space. Compact, lightweight and easy to carry, the XB23 fits perfectly into a backpack pocket or the cupholder of your camping chair. It also features a convenient strap to hang it from a tent or tree during a weekend camping trip.


You can now charge the speakersvia the newly adopted USB-Type-C®.

Battery life and connectivity

With a battery life of up to 24 hours[13] the party can continue all night long. Plus, you can connect your smartphone via USB Type-A for battery charging[14], so your phone can last as long as you do. Listen to your favourite music on the go by simply connecting your phone to the speakers using Bluetooth® technology and NFC™[15].

Pricing and availability

The SRS-XB43 model will be priced at approximately €230/£200 and is available from August 2020 in black and blue.

The SRS-XB33 model will be priced at approximately €150/£140 and is available from August 2020 in black, blue, red, taupe.

The SRS-XB23 model will be priced at approximately €120/£100 and is available from August 2020 in black, blue, red, taupe, green.

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[1]Only available for XB33 and XB23

[2]LIVE SOUND mode is only available on XB43 and XB33

[3]XB33 and XB23 have undergone extensive shock testing

[4]XB33 and XB23 have undergone extensive shock testing

[5]XB33 and XB23 only

[6]Deformation or damage from dropping the speakers or subjecting it to mechanical shock may cause deterioration of the waterproof and dust proof performance.

[7]XB43 and XB33 only

[8]Tweeter lighting available on XB43 only

[9]Fiestable is only available for XB43 and XB33

[10]Available on Google Play and App Store

[11]Available on Google Play and App Store

[12]Only compatible between SRS-XB43, SRS-XB33, SRS-XB23

[13]Up to 24-hour battery life (STAMINA mode/lighting off) on XB43/XB33 models only, XB23 has a battery life of up to 12-hours (STAMINA mode). Actual performance may vary from the listed time due to the volume, songs played, surrounding temperature and usage conditions.

[14]Only available for XB43 and XB33

[15]NFC available on XB43 and XB33 only


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