SONY SRSULT50B ULT POWER SOUND™ series | ULT FIELD 5 Wireless Portable Speaker - Black (2025)

Powerful bass for music on the move
Enjoy a superior music experience with powerful boosted sound, deep bass and 360° Party Light, all in a speaker made to be carried, so it can come right along with you.

Massive bass. Ultimate vibe.
Dive into the front row of a concert with a speaker built for music lovers. Experience heart-pounding audio with dynamic sound and massive bass. Get ready for the ultimate vibe.

Enjoy a superior music listening experience with powerful boosted sound
Get ready for powerful, boosted sound with the ULT button. Select ULT1 for deep, low-frequency bass or ULT2 for powerful, punchy bass to transform your listening experience.

Boosted sound to feel every beat
Boost low-frequency sounds with enhanced sound pressure and deeper bass. Choose from two types of powerful bass sound, to feel every beat more and set your pulse racing, with lower frequencies than you thought possible from such a compact speaker. Fill any space with atmosphere, deepen your musical experience and make anywhere feel like a party.

Hit the button. Feel the bass.
Press the ULT button to enjoy the powerful sound of ULT1 and ULT2. Select ULT1 for deeper, lower frequency bass. Select ULT2 for powerful, punchy bass.

Listen loud and clear
The technology in the ULT FIELD 5 works in harmony for better sound quality. The X-Balanced Speaker Unit delivers deep, punchy bass, and clear vocals even at high volumes. Tweeters provide crisp and spacious sound for high-frequencies. And the passive radiators are optimized to enhance bass sound. Put it all together and you get a great sound worth sharing with your friends.

Powerful sound with X-Balanced Speaker Unit
Our X-Balanced Speaker Unit features a non-circular diaphragm, for an increased surface area compared to conventional speaker units. The approx. 79mm x 107mm large woofer unit is designed for clear and deep bass sound.

A richer, clearer, deeper experience
The non-circular diaphragm not only maximizes the area of speaker diaphragm but it also increases sound pressure for deeper and punchier bass, less distortion and greater vocal clarity. Altogether, it elevates your listening experience.

Sound Field Optimization
By detecting ambient noise, sound settings can be automatically tuned to deliver clear sound even in noisy or outdoor environments.

A powerful deep bass boosted music experience, to be enjoyed anywhere
With a shoulder strap,9 long battery life, and resistance to water, dust, and rust, this speaker is built to go anywhere with ease.

It's easy to take your music with you
The included shoulder strap makes it easy to transport your speaker wherever you go, turning any location into a party venue for your music.

Take the party outside
With IP67 waterproof and dustproof rating, this speaker is ready for listening by the pool, at the park or wherever you like, no matter how dusty the surface – and there’s no problem rinsing it off. It’s also salt-water resistant, which means you can enjoy music even at the beach.

The party never stops
Up to 25 hours of battery life, the ULT FIELD 5 will keep your party powered all through the night.

Charge in just 10 minutes
With quick charging, you can get up to 2 hours of playing time with just 10 minutes of charging.

Take care of your battery
With the Battery Care function, you never have to worry about overcharging your speaker, which means it will last longer.

The choice is yours
Stood up or flat. The ULT FIELD 5 is designed for optimal sound either way, so you can use it whichever way suits your space.

360° Party Light to liven up your party
360° Party Light produces subtle lighting that’s perfect for illuminating parties or bringing a little mood into your everyday life. The illumination will synchronize with your music and can be controlled via the Sony | Sound Connect app.

Music that really gets you moving with Party Connect
Link up to 100 compatible speakers to synchronize music and lighting through Party Connect – fill any location with powerful sound to create the ultimate party atmosphere in any space. And there's no app required, just add speakers with the dedicated CONNECT button.

Add an extra compatible speaker for rich stereo sound with Stereo Pair
Connect two ULT FIELD 5 speakers, wirelessly with Stereo Pair, to activate stereo sound and experience a wider, more immersive listening experience.

Total convenience, total customization
The ULT FIELD 5 is even better with the Sony | Sound Connect app. The simple interface lets you dial in your ideal sound and shortcut settings, including lighting control. It can even keep track of your recent listening history.

Check your charge on the app
Keep an eye on your battery level on the Sony | Sound Connect app.

More choice with Multipoint Connection
For total convenience, the ULT FIELD 5 can be paired with two Bluetooth® devices at the same time, automatically switching when a call is received, or playback is started on either device.

Bluetooth® Fast Pair
In one tap, the ULT FIELD 5 enables quick, effortless Bluetooth® pairing with your Android™ devices.

USB Type-C® charge and charge other devices
The ULT FIELD 5 features a USB Type-C® port for convenient charging. The same port lets you use the ULT FIELD 5 as a portable powerbank to charge your devices.

Aiming to achieve a zero environmental footprint
Inspired by the beauty of the world, we are doing our part to help preserve the Earth while still offering superior sound quality and listening experiences. Our goal is achieving a zero environmental footprint across the entire Sony Group by the year 2050, and we are fast-tracking numerous environmental initiatives.

Environment in mind
Our products are designed not only to provide excellent sound quality, but also to consider the environment. Recycled Plastic is partially used for the body of the ULT FIELD 5. No plastics are used in the packaging material. This reflects how we strive to reduce the environmental impact of our products.

Accessibility
We believe technology should make the world more interactive, more creative, more entertaining, and more inclusive. By incorporating human-centric, inclusive design into our audio products, we deliver our KANDO experience to all users, regardless of age, ability or environment.