Sony ULT Field 1 Waterproof Portable Bluetooth Speaker - Enhanced Bass

Our review of the Sony ULT Field 1 finds a compact, rugged Bluetooth speaker aimed at active listeners who want bigger bass without hauling bulky gear. The single biggest reason to buy is its ULT bass-boosting button that delivers surprisingly deep, resonant low end for such a small package, while the IP67 build and detachable strap make it a practical companion for showers, hikes, and travel. For those who prioritize portable power and durability, this speaker balances punchy sound with true all-weather reliability.

Key Features

• ULT Bass Button: The dedicated ULT button boosts low frequencies to produce deeper, more tactile bass that lifts electronic, hip-hop, and pop tracks.
• Waterproof Design: An IP67 rating means the speaker is waterproof and dustproof so it can be used as a shower speaker or taken to the beach without worry.
• Rugged Durability: Shockproof and rustproof construction helps the speaker survive outdoor use and accidental knocks on hikes or at a campsite.
• 12-Hour Battery: Long battery life supports extended listening sessions on a single charge, enough for day trips or several workout sessions.
• Surround Sound Processing: A sound diffusion processor and DSP technology broaden the listening field to fill small rooms and outdoor spaces more effectively.
• Detachable Strap: The included multi-way strap makes it easy to hang, carry, or attach the speaker for hands-free listening on the move.

Who It's For

The ULT Field 1 is best for listeners who want a rugged, portable speaker with an emphasis on bass and durability. It suits commuters, campers, and anyone who needs a waterproof shower speaker or a small outdoor-friendly unit that can take occasional rough treatment.

It is less ideal for audiophiles seeking flat, studio-accurate sound or for people who require very high maximum volume for large gatherings; the speaker excels as a compact, bass-forward companion rather than a large party system.

Pros & Cons

Pros

• Powerful bass from the ULT control gives a punchy low end uncommon in compact speakers.
• IP67 rating provides real waterproof, dustproof, and rustproof protection for outdoor use.
• Long battery life lets you play music for up to 12 hours without frequent recharges.
• Compact size and detachable strap make it easy to carry and position around the home or outdoors.

Cons

• Not suited for listeners who need reference-level clarity across all frequencies; it favors bass presence.
• Maximum loudness is limited compared with larger outdoor party speakers.

Specifications

Our Verdict

The Sony ULT Field 1 is a strong value for buyers who want a compact, weatherproof speaker with enhanced bass and long battery life. Its rugged IP67 construction and handy strap make it ideal for active, outdoor use, and the ULT bass boost delivers more low-end impact than most speakers this size. Choose it for portable, bass-forward listening rather than for studio-accurate monitoring.

Frequently Asked Questions

Is the speaker safe to use in the shower?
Yes. The IP67 rating protects against water ingress, so it can be used near showers and in wet environments.

How long does the battery last on a single charge?
Battery life is rated up to 12 hours depending on volume and usage of features like bass boost.

Can it handle being dropped or used outdoors?
Yes. The speaker is shockproof, dustproof, and rustproof, making it suitable for outdoor activities and travel.