Dive into the deep, powerful sound offered by the Sony ULT FIELD 5 Portable Bluetooth Speaker. Compact yet mighty, this speaker is the ultimate companion for music lovers on the move. It also ensures a superior listening experience, featuring a 2-way active design that pumps out dynamic boosted audio and versatile ULT bass. Furthermore, this unit offers 360° Party Light, so you can liven up your jamming sessions with synchronised music and illumination.
Key Features
- Sound That Moves You: Bring your favourite tunes to life with the Sony ULT FIELD 5! Built to elevate your listening experience, this device equips an X-Balanced Speaker Unit, tweeters, and passive radiators that ensure rich sound quality unlike any other. It also features Sound Field Optimisation to intelligently tune sound settings depending on the ambient noise.
- Tune It Your Way: Thanks to its 10-Band Equaliser, you can easily customise your sound just the way you want it. It also has a built-in ULT button with two modes—ULT1 for deep, lower frequency bass and ULT2 for powerful, punch bass.
- Perfect Party Starter: Enjoy fun music with matching ambience, as this Sony Bluetooth Speaker has a 360° Party Light feature that syncs the lighting with your music.
- Handy App: The ULT FIELD 5 Speaker works in tandem with the Sony|Sound Connect app, making it easy to adjust shortcut settings, control lights, check your listening history, and monitor battery levels via your smartphone.
- Portability Meets Durability: Conveniently take this Sony Speaker to your every adventure! It has a compact design with a detachable shoulder strap for easy carrying. It also boasts an IP67 water and dustproof rating to ensure it can reliably handle the rigours of day-to-day use.
- Lasting Power: Enjoy extended listening sessions since the ULT FIELD 5 provides up to 25 hours of battery life. It also offers 10-minute quick charging, which gives you 2 hours of playtime. Plus, it has a Battery Care function to prevent overcharging.
- Seamless Connectivity: With its Bluetooth Multipoint Connection, you can switch between your two paired devices instantly. It also supports Fast Pair for rapid connection on Android devices. Plus, it has a Party Connect feature, so you can synchronise your music across 100 compatible speakers.
Sony ULT FIELD 5 Portable Bluetooth Speaker - Black (SRSULT50B) is rated
4.3 out of
5 by
8.
Rated 2 out of
5
by
LoHeMa from
Not great.
Not great. With most Bluetooth speakers, the minute I turn them on, they connect with whatever device they are used to connecting with. Not the ULT Field 5. I have to go to my Bluetooth connections, try to connect, it doesn't work, I have to turn off Bluetooth, turn it back on, etc. Each time, I have to fiddle to connect the speaker. It's also not loud enough for my purposes even though it should be according to its dB info.
Date published: 2026-05-03
Rated 4 out of
5
by
Satish from
Good not best
Upto 60% volume, music is good to hear but any further increase you will not enjoy the music as you notice bass reducing, distortion of sound and music is not really enjoyable.
Date published: 2025-11-04
Rated 5 out of
5
by
Markus Welby from
ULT Field 5
I have recently purchased 2 of the Sony ULT Field 5 Bluetooth speaker's they have great sound output & I like that they have dual Bluetooth connectivity so I can have them connected to 2 Bluetooth devices and swap between them. The phone app is great as it gives you a graphic equaliser along with other adjustments
Date published: 2026-03-23
Rated 4 out of
5
by
P Devo from
Great sound!
Great sound for its size. Lights are ok. More of a novelty than a feature. Only bugbear is that I bought two of these with the intention of using Sony Connect for stereo sound. Sony Connect is very buggy. Often lots of static and doesn’t work well. Hopefully this is rectified in a Firmware update.
Date published: 2026-01-06
Rated 4 out of
5
by
Neddynoo from
Great speaker
Very happy with the sound. Only thing I found misleading was that it could be turned on remotely but it actually turns itself off after a while and can only be restarted manually
Date published: 2026-01-08
Rated 5 out of
5
by
Peanuts18 from
Fabulous Sound
We were absolutely thrilled with this bluetooth sound box. My partner is a seasoned musician and really rated it excellent.
Date published: 2025-11-12
Rated 5 out of
5
by
ULT5 from
Very loud
Ult Field 5 what a great buy and love the great sound and bass that it makes, great quality product, love it.
Date published: 2026-05-01
Rated 5 out of
5
by
Ashtag from
Great sound
Bought it a few months ago and has been exelent for having outdoor jams.
Date published: 2026-05-01