Marshall Emberton III

Name: Marshall Emberton III
Brand: Marshall
SKU: 18374

Manufacturer: Marshall

The Marshall Emberton III is a compact portable speaker from Marshall's established lineup, built around a rugged, IP67-rated waterproof enclosure that can withstand submersion up to one meter. Weighing 670 g and measuring 160 × 76.9 × 68 mm, it strikes a balance between portability and physical presence, with a control panel mounted directly on the device for straightforward operation.

Audio output is handled by two drivers delivering a combined 20W of power, supported by a passive radiator and a frequency range spanning 65 Hz to 20,000 Hz with a sound pressure level of 90 dB/mW. Connectivity relies on Bluetooth 5.3 with a stated range of 100 m, and the speaker supports both LE Audio and Auracast. Battery life is rated at 32 hours with a two-hour charge time via USB Type-C. Additional features include a sleep timer, voice prompts, battery level indication, and smartphone remote support, while the speaker operates entirely wirelessly with no AUX or 3.5 mm jack input.

Pros

IP67 waterproof rating with a 1 m submersion tolerance makes it suitable for outdoor and wet environments
32-hour battery life allows extended use between charges, with a relatively short 2-hour charge time
Bluetooth 5.3 with a 100 m maximum range provides a wide wireless coverage area
Supports LE Audio and Auracast, enabling multi-speaker broadcast use cases
Stereo speaker configuration with a passive radiator extends low-frequency reproduction without a dedicated subwoofer
Sleep timer and smartphone remote support add practical convenience for everyday use

Cons

No 3.5 mm audio jack or AUX input limits playback to Bluetooth only, with no wired audio fallback
Lacks wireless charging, requiring a cable for every recharge
No fast pairing support, which can slow down the initial connection process
Does not function as a power bank, so it cannot charge other devices
The single microphone has no noise cancellation, which may affect call clarity in noisy conditions
No travel bag is included, offering no built-in protection solution for transport

Who is this for?

This speaker is well-suited to users who frequently take their audio outdoors, as the IP67 waterproof rating and 1 m submersion tolerance make it reliable in rain, at the beach, or around water. The 32-hour battery life makes it a practical choice for extended trips or multi-day use without regular access to power, and the compact dimensions keep it portable enough to carry without much effort. Users who want to link multiple speakers together will also find value in the Auracast and LE Audio support, and those comfortable managing playback entirely over Bluetooth will appreciate the 100 m wireless range combined with smartphone remote control.

Who is this NOT for?

Users who rely on a wired audio connection will find this speaker limiting, as there is no 3.5 mm jack or AUX input of any kind. It is equally unsuitable for those who expect advanced codec support such as aptX, LDAC, or AAC, since none of these are available, which may be a drawback for listeners who prioritize higher-quality wireless audio transmission. Additionally, users looking for a speaker that doubles as a power bank for charging other devices, or those who need a noise-canceling microphone for clear hands-free calls in loud environments, will find the feature set insufficient for those specific needs.

Design:

Ingress Protection (IP) rating	IP67
volume	836.672 cm³
drivers count	2
has a neodymium magnet	✕
control panel placed on a device	✓
water resistance	Waterproof
travel bag is included	✕
has a touch screen	✕
has RGB lighting	✕
has a detachable cable	✕
is a neckband speaker	✕
has a remote control	✕
weight	670 g
waterproof depth rating	1 m
height	76.9 mm
width	160 mm
thickness	68 mm

The Marshall Emberton III is a compact portable speaker measuring 160 × 76.9 × 68 mm with a total volume of 836.672 cm³ and a weight of 670 g, making it reasonably portable without being ultralight. It carries an IP67 rating, classifying it as fully waterproof and dustproof, with a submersion depth tolerance of up to 1 m. The enclosure houses two drivers and features a control panel mounted directly on the unit for straightforward physical access. It does not include a travel bag, remote control, touch screen, RGB lighting, detachable cable, or neodymium magnets, and it is not a neckband-style speaker.

Sound quality:

has stereo speakers	✓
has a subwoofer	✕
highest frequency	20000 Hz
lowest frequency	65 Hz
audio output power	2 x 10W
Has a passive radiator	✓
number of microphones	1
has a noise-canceling microphone	✕
sound pressure level	90 dB/mW
has a magnetic shielding	✕

The Emberton III operates as a stereo speaker, delivering 2 x 10W of audio output power across a frequency range of 65 Hz to 20,000 Hz, and reaches a sound pressure level of 90 dB/mW. It does not include a subwoofer, but a passive radiator is present to reinforce low-end response. The speaker includes a single microphone, which does not feature noise cancellation, and there is no magnetic shielding on the unit.

Power:

Battery life	32 hours
charge time	2 hours
has a battery level indicator	✓
has a rechargeable battery	✓
has a removable battery	✕
has wireless charging	✕

The Emberton III is equipped with a built-in rechargeable battery rated for 32 hours of playback, and it fully recharges in 2 hours. A battery level indicator is included so the remaining charge is visible at a glance. The battery is not removable, and the speaker does not support wireless charging.

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	✕
has Chromecast built-in	✕
has Auracast	✓
has Bluetooth LE Audio	✓
maximum Bluetooth range	100 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 Emberton III connects wirelessly via Bluetooth 5.3 with a maximum range of 100 m, and supports both LE Audio and Auracast, enabling multi-speaker broadcast scenarios. It does not support NFC pairing, Wi-Fi, AirPlay, Chromecast, or DLNA, and none of the aptX variants, LDAC, or AAC codecs are present. On the wired side, the speaker includes a single USB Type-C port but lacks a 3.5 mm audio jack socket, AUX input, 3.5 mm male connector, microphone input, external memory slot, and Ethernet connectivity.

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 Emberton III is designed for fully wireless use and supports smartphone remote control, allowing playback management from a paired device. It includes voice prompts for on-device audio feedback and a sleep timer for automatic shutoff. Fast pairing, voice commands, a mute function, radio reception, and power bank functionality are not available on this speaker.

Final Verdict

The Marshall Emberton III is a capable portable speaker that earns its place through a combination of rugged build quality and endurance, with its IP67 waterproof rating and 32-hour battery life standing out as the most compelling reasons to consider it for outdoor and on-the-go use. Bluetooth 5.3 with LE Audio and Auracast support reflects a forward-looking connectivity approach, while the stereo driver configuration and passive radiator deliver a reasonably complete audio setup in a compact form. Its reliance on Bluetooth as the sole audio input and the absence of advanced codec support mean it suits wireless-first users rather than those with more demanding audio transmission requirements. Overall, the Emberton III is a well-defined product for users who prioritize durability, long battery runtime, and wireless convenience in a portable speaker.