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Boult Audio Shadow specifications and in-depth review

Boult Audio Shadow

Manufacturer: Boult Audio

The Boult Audio Shadow are true wireless earbuds designed for everyday use, sitting securely in the ear without any cables or neckband. They carry an IPX5 water resistance rating, making them suitable for workouts and light outdoor use. A carrying case is included in the box, and voice prompts help keep the user informed during operation.

Audio is handled by a 13 mm driver covering a frequency range of 20 Hz to 20,000 Hz, while passive noise isolation helps reduce ambient sound during playback. Connectivity runs on Bluetooth 5.3 with a quoted range of 10 m and an audio latency of 45 ms. The earbuds offer 7 hours of playback on a single charge, with the included case extending total battery life to 28 hours. Charging is done via USB Type-C, and fast charging is supported, with a full charge taking around 1.5 hours. A quad-microphone setup with noise cancellation handles calls and voice input.

Pros
  • IPX5 water resistance makes them suitable for workouts and outdoor use in light rain
  • Bluetooth 5.3 ensures a relatively stable wireless connection
  • The charging case extends total battery life to 28 hours, reducing the need for frequent recharging
  • Fast charging support helps minimize downtime when the battery runs low
  • Four microphones with noise cancellation support cleaner call quality
  • A travel bag is included in the box, adding practical value for carrying and storage
Cons
  • No active noise cancellation, which limits use in louder environments
  • Wireless charging is not supported, requiring a cable every time the case needs charging
  • The maximum Bluetooth range of 10 m is relatively short for a wireless earbud
  • No in/on-ear detection, so music will not automatically pause when an earbud is removed
  • There is no find device feature, making it harder to locate misplaced earbuds
  • No ambient sound mode, which restricts awareness of surroundings during use
Who is this for?

The Boult Audio Shadow are well-suited to users who need a reliable pair of wireless earbuds for active daily use and exercise, given their IPX5 water resistance and secure in-ear fit. The 28-hour combined battery life makes them practical for frequent travellers or commuters who need extended use without constant recharging. Their quad-microphone setup with noise cancellation also makes them a reasonable choice for people who regularly take calls or use voice input throughout the day.

Who is this NOT for?

Users who prioritize advanced audio features such as active noise cancellation, spatial audio, or high-resolution codec support like LDAC or aptX will find this product lacking. The earbuds are also less suited to those who work in noisy environments where ANC would be essential for focus. Additionally, users who expect smart conveniences like automatic ear detection or a find device function will miss those features, which can affect day-to-day usability.

Design:

Fit In-ear
Ingress Protection (IP) rating IPX5
water resistance Water resistant
has no wires or cables ✓
are neckband earbuds ✕
wingtips included ✕
has RGB lighting ✕
has stereo speakers ✓
has UV light ✕
Has a display ✕

The Boult Audio Shadow follow an in-ear fit and operate as true wireless earbuds, meaning there are no cables or neckband involved. They carry an IPX5 ingress protection rating, classifying them as water resistant and suitable for use in light rain or during exercise. Stereo speakers are present, while there is no RGB lighting, UV light, wingtips, or any built-in display.

Sound quality:

has active noise cancellation (ANC) ✕
has passive noise reduction ✓
driver unit size 13 mm
lowest frequency 20 Hz
highest frequency 20000 Hz
supports spatial audio ✕
has Dolby Atmos ✕
has Dirac Virtuo ✕
has a neodymium magnet ✕

The Boult Audio Shadow use a 13 mm driver unit and cover a frequency range of 20 Hz to 20,000 Hz. Passive noise reduction is present, helping to block out ambient sound through the physical seal of the in-ear fit, though active noise cancellation is not supported. There is no neodymium magnet, and the earbuds do not support spatial audio, Dolby Atmos, or Dirac Virtuo.

Power:

Battery life 7 hours
Battery life of charging case 28 hours
charge time 1.5 hours
has wireless charging ✕
Has a solar power battery ✕
has a battery level indicator ✓
has a rechargeable battery ✓

The Boult Audio Shadow offer 7 hours of battery life per charge, with the included charging case extending the total to 28 hours. A full charge takes 1.5 hours, and the earbuds feature a rechargeable battery along with a battery level indicator. Wireless charging and solar power are not supported.

Connectivity:

has fast pairing ✕
Has USB Type-C ✓
Bluetooth version 5.3
has LDAC ✕
has LDHC ✕
has Bluetooth LE Audio ✕
has aptX Adaptive ✕
has aptX Low Latency ✕
has aptX HD ✕
has aptX ✕
has aptX Lossless ✕
audio latency 45 ms
has aptX Voice ✕
has Auracast ✕
maximum Bluetooth range 10 m
supports Bluetooth pairing using NFC ✕
Can be used wirelessly ✓
has AAC ✕

The Boult Audio Shadow connect wirelessly using Bluetooth 5.3, with a maximum quoted range of 10 m and an audio latency of 45 ms. Charging is handled via USB Type-C, though wireless charging is not available. The earbuds do not support fast pairing, NFC pairing, AAC, LDAC, LDHC, Auracast, or any variant of the aptX codec family, including aptX, aptX HD, aptX Adaptive, aptX Low Latency, aptX Lossless, and aptX Voice. Bluetooth LE Audio is also absent.

Features:

has ambient sound mode ✕
has in/on-ear detection ✕
has find device feature ✕
Supports fast charging ✓
can read notifications ✕
has a mute function ✓
can be used as a headset ✓
control panel placed on a device ✓
Has voice prompts ✓
travel bag is included ✓
Has an in-line control panel ✕
Has a temperature sensor ✕
Has a built-in camera remote control function ✕

The Boult Audio Shadow support fast charging and can function as a headset, making them usable for calls in addition to music playback. Controls are placed on the device itself rather than an in-line panel, and voice prompts are available to guide the user during use. A mute function is also included, and a travel bag comes in the box. The earbuds do not offer ambient sound mode, in/on-ear detection, a find device feature, notification reading, a temperature sensor, or a built-in camera remote.

Microphone:

number of microphones 4
has a noise-canceling microphone ✓

The Boult Audio Shadow feature a quad-microphone setup with noise cancellation, allowing the microphones to filter out background sound during calls and voice input.

Final Verdict

The Boult Audio Shadow present a straightforward set of true wireless earbuds aimed at everyday users who value practicality over advanced audio technology. With 28 hours of combined battery life, IPX5 water resistance, fast charging support, and a four-microphone noise-canceling setup, the earbuds cover the essentials for active use and regular calls without overcomplicating the experience. Those expecting active noise cancellation, high-resolution codec support, or smart features like ear detection will find the specification sheet limited, but for users whose needs are more routine, the Boult Audio Shadow deliver a functional and well-rounded package.