Sony ULT FIELD 3 Wireless

The ULT FIELD 3 carries forward the ethos of the “ULT POWER SOUND™” line from Sony: compact, portable yet bass‑driven wireless speaker performance. On the Australian local market, it is listed at an RRP of A$329. 

Starting with build and design, the ULT FIELD 3 is intended for mobility and outdoor‑friendly use. The body is rectangular rather than cylindrical, making it carryable one‑handed, and it includes a detachable shoulder strap so you can sling it over a bag or wear it over the shoulder. The speaker is engineered to endure more rugged conditions: water‑, dust‑ and rust‑resistance are part of the package — in fact it carries an IP67 rating and (in some sources) IP66/67 certs for impact resistance as well. On the portability front reviewers measured dimensions of approximately 256 mm width × 113 mm height × 79 mm depth and a weight of about 1.2 kg. 

Looking at battery life and power, Sony advertise “up to 24 hours” of playback under typical conditions. Independent testing (e.g., reviewed by RTINGS) found real‑world battery measured around 14.5 hours with the “ULT Power” bass mode active, and up to 44.5 hours in a “Stamina Mode”. The speaker also supports quick‑charge: a short charging interval yields additional playback time (e.g., 10 minutes giving around 2 hours, in some tests). 

On the audio side, the ULT FIELD 3 emphasises bass punch via a dedicated “ULT” button on the unit that engages an enhanced bass mode (“ULT Power Sound”). This is paired with a two‑way active driver design (woofer + tweeter) and side passive radiators designed to boost low‑end response for its size. According to reviewers, when the ULT mode is engaged the speaker delivers strong low‑bass extension for its class, giving more “thump” and presence. On the flip side, because the speaker is a mono unit (rather than true stereo array) some reviewers found it doesn’t deliver the same loudness or stereo width as larger systems; audio at maximum volume may show compression, and directivity (sound towards the front) is an aspect to consider. 

In terms of connectivity and features: the speaker uses Bluetooth (specification around version 5.2), supports the Sony “Sound Connect” app allowing a 7‑band graphic EQ, firmware updates and customised sound profiles. It also supports linking to other compatible Sony speakers for “Party Connect” and stereo pairing (two ULT FIELD 3 units) for wider sound staging. The controls are straightforward: top‑panel buttons for power, Bluetooth pairing, ULT button, volume up/down etc, and the shoulder strap makes it genuinely portable.

From a usability viewpoint, this speaker sits well as a portable all‑rounder for indoor or outdoor use. If you’re looking for a speaker you can toss in a backpack, bring to the beach, hang by the strap, or place beside you on a veranda, the ULT FIELD 3 ticks many boxes: strong bass capability, decent battery, rugged build, and mobility. The inclusion of a strap and the IP67 rating means it’s more adventure‑ready than typical bookshelf speakers. On the other hand, if your primary use is indoor high‑fidelity stereo listening, extremely high volume levels in large rooms, or multi‑room WiFi streaming, you might find the ULT FIELD 3 a compromise. Its mono output means stereo separation will be limited unless you invest in two units; volume headroom is good but not unlimited; and it lacks some advanced streaming features (e.g., multi‑room WiFi) that specialised indoor systems offer.

To wrap up: the Sony ULT FIELD 3 is a well‑engineered portable wireless speaker offering a strong combination of portability, durability and bass‑focused performance. At an Australian RRP of A$329 and with a 24‑hour battery promise, it’s a competitive choice for someone wanting a “take‑anywhere” speaker that doesn’t sacrifice too much sound quality.

This description was generated with the help of AI and last updated November 2025.