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Sony ULT POWER SOUND™ series | ULT FIELD 1 Wireless Portable Speaker | Black
ULT FIELD 1
Big sound. Compact design.
Experience enhanced bass and powerful sound built into a compact package. Complete with a multi-way strap for ease of use, take your waterproof, dustproof and even shockproof speaker anywhere for longer, thanks to a long battery life.
Discover ULT FIELD 1
Massive bass. Ultimate vibe.
Dive into the front row of a concert with the ULT POWER SOUND series. Built for music lovers, it produces powerful deep sound designed to make your heart tremble. Prepare to feel the bass.
- Press the ULT button to boost your bass.
- The Sound Diffusion Processor expands sound in any space.
- With an IP67 waterproof and dustproof rating this speaker is ready for the elements.
- Shockproof to withstand knocks and bumps.
- Enjoy music for longer with up to 12 hours of battery life.
- Compact, easy-to-carry design.
- Detachable, multi-way strap to carry the speaker with you.
- Four different colors to suit your style.
- Clear call quality with Echo Canceling.
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Sony's ULT FIELD 1 stands out for its adjustable, muscular low end — the ULT Power Sound delivers punchy bass that fills outdoor spaces, while the speaker still exposes fine detail in tracks. Reviewers from What Hi‑Fi? and Chris Boylan praise its loud, resilient design and IP67-rated durability, making it a rugged yet musically capable portable.
Pros
- Adjustable ULT Power Sound gives genuinely impactful, portable low-end and higher SPL for outdoor use.
- Rugged, well-made build with IP67 water/dust resistance and shockproofing suited to outdoor use.
- Surprisingly detailed treble and dynamics for its size — reveals texture and goes louder than expected.
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Cons
- Mids can become recessed when the ULT bass boost is engaged, reducing vocal presence.
- Boosted bass can be slightly boomy or heavy‑handed on some tracks, trading tautness for impact.
- Occasional top‑end harshness at higher volumes or on bright recordings.
Sound Quality
85/100
Bass
88/100
ULT Power Sound/ULT button adds significant low-end weight and punch — reviewers describe it as 'big bottomed bass' and 'blown away' when engaged. Without the boost the low end is described as tight but thin, and the boosted mode can sometimes be slightly bass-forward or a touch boomy on some tracks.
Mid
82/100
Mids are generally clear but can be recessed when the ULT bass boost is enabled; reviewers noted vocals lose presence in boosted mode and that it lacks the midrange heft of some rivals (e.g., JBL). Custom EQ can recover some mid presence.
Treble
85/100
High-frequency detail is good — strings and cymbals sound natural and the speaker exposes texture well. Some reviewers flagged occasional top-end harshness at higher volumes or on bright recordings.
Soundstage Imaging
84/100
Conveys a pleasant sense of intimacy and space on acoustic and vocal tracks; imaging is focused forward where the tweeter sits. Not a wide-room projector but performs well for its compact form and recording-dependent.
Dynamics
88/100
Capable dynamic range for a compact speaker — captures build-ups and gets louder than expected without obvious strain. Reviewers contrasted its dynamics favorably against cheaper, smaller rivals.
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Build Quality
90/100
Rugged, well-made construction with IP67 water resistance and shock-proofing; reviewers verified durability and hardy exterior mesh. Feels designed for outdoor use and survived wet/rain tests without performance loss.
Features Connectivity
92/100
Bluetooth 5.3 with SBC/AAC, stereo pairing via Sony Music Center app, Custom EQ, speakerphone, ~12-hour battery life, and IP67 — reviewers praised the practical feature set. Lacks hi-res codecs but typical for this class and price.
Value for Money
90/100
At $129.99 reviewers call it 'fairly affordable' and a compelling choice for casual listeners seeking punchy portable sound. Strong feature and durability set make it a solid buy versus peers, though not a purist audiophile pick.
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