SONY SRS-ULT70 HI-FI

Sony SRS-ULT70 — Thunderous Bass, Untethered Freedom

The Sony SRS-ULT70 is Sony’s boldest statement in portable audio — a wireless speaker engineered to deliver deep, powerful bass that moves air and fills rooms, while surviving every outdoor challenge with IP67 waterproofing and up to 30 hours of battery life.

Built for Those Who Feel Music as Much as They Hear It

Sony’s ULT (Ultimate Bass Technology) series was developed for listeners who believe bass isn’t just about volume — it’s about physical impact, tightness, and depth that you feel in your chest. The SRS-ULT70 is the flagship of that series: a speaker that combines Sony’s most advanced passive radiator design with the ULT Power Sound button for instant bass boost when the music demands maximum impact.

What It Is

The Sony SRS-ULT70 is a large-format portable Bluetooth speaker featuring Sony’s ULT Field 7 acoustic system — a woofer, tweeters, and dual passive radiators in a rugged cylindrical enclosure. It delivers up to 30 hours of continuous playback, IP67 water and dust resistance, and multi-device connectivity via Bluetooth 5.3 and NFC. The ULT Power Sound button activates enhanced bass processing for instant sonic impact.

Key Features

• ULT Power Sound Technology — A dedicated bass processing mode activated by the ULT button delivers Sony’s maximum bass response — enhanced low frequencies that make basslines, kick drums, and sub frequencies physically palpable at any volume.
• Dual Passive Radiators — Two large passive radiators extend bass reproduction significantly below what the active driver alone could achieve, creating the deep, room-filling low end that defines the ULT70’s character.
• 30-Hour Battery Life — One charge sustains a full weekend of outdoor use, with Sony’s Quick Charge feature delivering 10 minutes of charge for 70 minutes of playback when time is short.
• IP67 Waterproof and Dustproof — Submersible in up to 1 metre of water for 30 minutes and completely sealed against dust — ready for beach parties, pool days, and outdoor adventures.
• Party Connect (Multi-Speaker) — Link multiple ULT series speakers wirelessly for synchronised playback across larger spaces, or create a stereo pair with a second SRS-ULT70.
• X-Balanced Speaker Unit — Sony’s rectangular driver design maximises diaphragm area within the enclosure, increasing air displacement and reducing distortion at high output levels.

Why the Sony SRS-ULT70 Stands Out

The SRS-ULT70 belongs to a specific category: portable speakers where bass performance is genuinely the primary design goal. Sony’s approach goes beyond simple EQ boosting — the passive radiator system, X-Balanced driver, and ULT processing work together as an acoustic system. The result is bass that sounds engineered, not artificially inflated. The 30-hour battery and IP67 rating make it equally at home for extended outdoor use, and the build quality reflects Sony’s premium hardware standards throughout.

Perfect For

• Outdoor party hosts — 30 hours of battery and IP67 waterproofing make it the ideal speaker for extended outdoor events regardless of weather.
• Bass music enthusiasts — Hip-hop, electronic, reggae, and any bass-forward genre benefit from the ULT70’s physical low-end presence.
• Multi-room setups — Party Connect lets you chain multiple ULT speakers across large spaces for consistent, synchronised coverage.

Best Suited For

Ideal for outdoor enthusiasts, party hosts, and bass music lovers who want a portable speaker that delivers genuine physical impact rather than polite background audio, with battery life and durability to match any occasion.

Our Promise

Every Sony SRS-ULT70 sold through our store is a genuine Sony product with the full manufacturer’s warranty. We stock the complete range of available colours and our audio specialists are available to help with any questions about setup, multi-speaker pairing, or app configuration.

Frequently Asked Questions

Q: Does the ULT70 support Sony’s 360 Reality Audio?
A: The SRS-ULT70 supports spatial sound processing. Full 360 Reality Audio optimisation is available through the Sony Music Center app on compatible smartphones.

Q: How many speakers can be linked with Party Connect?
A: Party Connect supports linking up to 100 compatible Sony speakers simultaneously for large-scale synchronised playback.

Q: Does it have a built-in microphone for speakerphone use?
A: Yes — the SRS-ULT70 includes a built-in microphone for hands-free calling directly from the speaker.

Technical Specifications