Sony ULT Field 1

Name: Sony ULT Field 1
Brand: Sony
SKU: 44563

Manufacturer: Sony

The Sony ULT Field 1 is a portable speaker designed for outdoor and on-the-go use. Built around a Bluetooth 5.3 connection with fast pairing support, it operates wirelessly and can be controlled via a smartphone, making it straightforward to use in a variety of settings. A detachable cable and USB Type-C port round out its practical feature set, and the speaker supports stereo pairing with a compatible unit for a wider soundstage.

Rated IP67, the ULT Field 1 is both dust-tight and capable of withstanding submersion, giving it solid credentials for outdoor environments. Its dual-driver configuration delivers a combined 30W of audio output power, complemented by a passive radiator that helps reinforce low-end response. The speaker covers a full 20 Hz to 20,000 Hz frequency range and reaches a sound pressure level of 100 dB/mW. A 3,000 mAh rechargeable battery provides up to 12 hours of playback, charged via USB Type-C, and the unit includes a sleep timer and voice prompts among its onboard features. At 650 g and measuring 206 × 77 × 76 mm, it sits in a mid-range size bracket for a portable speaker of its type.

Pros

IP67 rating means the speaker is fully dust-tight and can handle submersion, making it reliable in wet or outdoor conditions
Bluetooth 5.3 with fast pairing allows quick and stable wireless connections without manual setup hassle
Stereo pairing support lets two units be linked together for a wider soundstage when needed
The detachable cable adds flexibility and means the cable can be replaced without affecting the whole unit
A sleep timer is a practical convenience for use before bed or in timed listening sessions
30W total output power across two drivers, backed by a passive radiator, provides substantial volume for a portable speaker

Cons

No battery level indicator makes it difficult to gauge remaining charge without additional tools
A 5-hour charge time is relatively long given the 12-hour battery life
No 3.5mm audio jack or AUX input means wired audio playback from non-USB sources is not possible
The speaker lacks NFC pairing, so connecting to compatible devices requires going through standard Bluetooth menus
No wireless charging support limits charging convenience in environments where cable access is restricted
At 650g, the weight may be noticeable for users who need to carry the speaker over longer distances

Who is this for?

The ULT Field 1 is well-suited to users who frequently take their speaker outdoors or into environments where exposure to water and dust is a real concern, thanks to its IP67 rating. Its wireless operation, fast pairing, and smartphone remote support make it a practical fit for those who want a low-friction listening experience at the beach, poolside, or on camping trips. Users who plan to set up two units together will also find value in the stereo pairing capability, which expands the listening experience without requiring additional equipment. The 12-hour battery life makes it a reasonable companion for extended outdoor sessions where charging is not readily available.

Who is this NOT for?

Users who rely on wired audio connections — whether through a 3.5mm jack or AUX input — will find this speaker incompatible with their setup, as neither option is available. Audiophiles or those accustomed to high-resolution wireless audio will also find the connectivity lacking, given the absence of LDAC, aptX HD, or any aptX variant, which limits audio transmission quality over Bluetooth. Additionally, the 650g weight and the lack of a travel bag make it a less practical choice for users who need a truly lightweight and well-protected speaker for frequent travel or backpacking.

Design:

Ingress Protection (IP) rating	IP67
volume	1205.512 cm³
driver unit size	16 mm
has a neodymium magnet	✕
control panel placed on a device	✓
water resistance	Water resistant
travel bag is included	✕
has a touch screen	✕
has RGB lighting	✕
has a detachable cable	✓
is a neckband speaker	✕
has a remote control	✕
weight	650 g
height	77 mm
width	206 mm
thickness	76 mm

The Sony ULT Field 1 has a compact physical footprint, measuring 206 mm wide, 77 mm tall, and 76 mm thick, with a total volume of approximately 1,205.5 cm³ and a weight of 650 g. Its IP67 rating confirms full dust protection and the ability to withstand temporary submersion, making it well-suited for outdoor use. The speaker features a 16 mm driver unit and includes a detachable cable, while the control panel is located directly on the device itself. It does not include a travel bag, remote control, touch screen, RGB lighting, or a neodymium magnet, and it is not a neckband-style speaker.

Sound quality:

has stereo speakers	✕
has a subwoofer	✕
highest frequency	20000 Hz
lowest frequency	20 Hz
audio output power	2 x 15W
Has a passive radiator	✓
number of microphones	1
has a noise-canceling microphone	✕
sound pressure level	100 dB/mW
has a magnetic shielding	✕

The ULT Field 1 runs a dual-driver setup with a combined audio output power of 2 x 15W and covers a full frequency range from 20 Hz to 20,000 Hz. A passive radiator assists with low-frequency reproduction, though the speaker does not include a dedicated subwoofer. It reaches a sound pressure level of 100 dB/mW and operates without stereo speakers or magnetic shielding. For communication, the speaker incorporates a single microphone, which does not feature noise cancellation.

Power:

battery power	3000 mAh
Battery life	12 hours
charge time	5 hours
has a battery level indicator	✕
has a rechargeable battery	✓
has wireless charging	✕

The ULT Field 1 is powered by a rechargeable 3,000 mAh battery that provides up to 12 hours of playback on a full charge, which takes approximately 5 hours to complete. Charging is handled via cable, as the speaker does not support wireless charging. There is no battery level indicator on the device, so remaining charge is not displayed directly on the unit.

Connectivity:

Bluetooth version	5.3
supports Bluetooth pairing using NFC	✕
has a socket for a 3.5 mm audio jack	✕
has an AUX input	✕
has aptX Lossless	✕
has LDAC	✕
has aptX Adaptive	✕
has aptX HD	✕
has aptX	✕
has aptX Low Latency	✕
has AAC	✓
has AirPlay	✕
maximum Bluetooth range	10 m
supports Wi-Fi	✕
USB ports	1
Has USB Type-C	✓
has a 3.5mm male connector	✕
has an external memory slot	✕
is DLNA-certified	✕
supports Ethernet	✕
has a microphone input	✕

The ULT Field 1 connects wirelessly via Bluetooth 5.3 with a maximum range of 10 m and supports the AAC codec for audio transmission, though aptX variants (including aptX, aptX HD, aptX Adaptive, aptX Lossless, and aptX Low Latency), LDAC, and AirPlay are not supported. Pairing is done through standard Bluetooth without NFC, and there is no Wi-Fi, Ethernet, or DLNA connectivity. For wired connections, the speaker includes a single USB Type-C port used for charging, but it does not offer a 3.5 mm audio jack socket, an AUX input, a 3.5 mm male connector, a microphone input, or an external memory slot.

Features:

Can be used wirelessly	✓
supports a remote smartphone	✓
has fast pairing	✓
has voice commands	✕
Has a radio	✕
Has voice prompts	✓
has a mute function	✕
works as a power bank	✕
has a sleep timer	✓

The ULT Field 1 can be used fully wirelessly and supports smartphone remote control, allowing playback management from a paired device. It includes fast pairing for quicker Bluetooth setup and provides voice prompts to guide the user through actions such as pairing and power states. A sleep timer is also available as a built-in convenience feature. The speaker does not support voice commands, has no built-in radio, lacks a mute function, and cannot function as a power bank for charging other devices.

Miscellaneous:

supports pairing for stereo sound	✓

The ULT Field 1 supports stereo pairing, allowing two compatible units to be paired together to produce a stereo sound configuration.

Final Verdict

The Sony ULT Field 1 presents itself as a practically oriented portable speaker built around durability and everyday wireless convenience. Its IP67 rating combined with 30W of total output power gives it a solid foundation for outdoor use, and features like fast pairing, smartphone remote support, and stereo pairing capability add genuine usability without unnecessary complexity. Where it falls short — the absence of wired audio inputs, high-resolution Bluetooth codec support, and a battery level indicator — reflects clear trade-offs that narrow its appeal to users with specific listening habits. For those whose priority is a rugged, wire-free speaker that handles the elements and delivers reliable performance over extended sessions, the ULT Field 1 makes a coherent and well-specified choice.