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Boult Audio Derby specifications and in-depth review

Boult Audio Derby

Manufacturer: Boult Audio

The Boult Audio Derby are true wireless earbuds designed for everyday use, offering a straightforward in-ear fit without neckbands or wingtips. They carry an IPX5 sweat-resistance rating, making them a reasonable companion for workouts and outdoor activity. The earbuds connect over Bluetooth 5.4, support multipoint pairing with up to two devices simultaneously, and include a charging case that extends total playback to a notable 92 hours.

Each earbud houses a 13 mm driver unit covering a frequency range of 20 Hz to 20,000 Hz, with passive noise isolation handling ambient sound reduction. The four-microphone array with noise-canceling capability supports hands-free headset use, while audio latency is rated at 45 ms over the AAC codec. Fast charging is supported via USB Type-C, and a full charge from empty takes around 1.5 hours. Additional features include voice prompts, a mute function, an on-device control panel, and a travel bag included in the box.

Pros
  • The charging case holds enough power to extend total playtime to 92 hours, making it suitable for extended use without frequent recharging
  • Multipoint connectivity allows simultaneous pairing with two devices, reducing the need to manually switch connections
  • A four-microphone array with noise cancellation supports cleaner voice pickup during calls
  • Fast charging is supported, reducing downtime when the battery runs low
  • IPX5 sweat resistance makes the earbuds practical for workouts and outdoor use
  • A travel bag is included in the box, providing a ready-to-use storage option
Cons
  • Active noise cancellation is not available, so sound isolation relies entirely on the passive seal of the in-ear fit
  • No ambient sound mode means external audio awareness requires physically removing the earbuds
  • Fast pairing and NFC pairing are both absent, requiring manual Bluetooth setup each time with a new device
  • Wireless charging is not supported, limiting charging to wired connections only
  • None of the aptX codec variants are supported, leaving AAC as the only enhanced audio codec option
  • There is no find device feature, which can be inconvenient if the earbuds are misplaced
Who is this for?

The Boult Audio Derby are well suited to users who prioritize long all-day battery life, given the combination of 8-hour earbud runtime and a 92-hour charging case. The IPX5 sweat resistance makes them a practical choice for gym sessions and outdoor workouts, where moisture exposure is a regular concern. Users who frequently switch between two devices will also benefit from the built-in multipoint support, and those who take regular calls can rely on the four-microphone noise-canceling setup for reasonably clean voice communication.

Who is this NOT for?

Users who require active noise cancellation for commuting, open-plan offices, or noisy travel environments will find these earbuds limiting, as sound isolation depends solely on the passive in-ear seal. The absence of high-resolution audio codecs such as LDAC or any aptX variant makes them a poor fit for audiophiles or listeners who prioritize lossless wireless audio quality. Additionally, anyone accustomed to smart features like in-ear detection, ambient sound passthrough, or a find-my-earbuds function will find the feature set noticeably bare in those areas.

Design:

Fit In-ear
Ingress Protection (IP) rating IPX5
water resistance Sweat resistant
has no wires or cables ✓
are neckband earbuds ✕
wingtips included ✕
has stereo speakers ✓

The Boult Audio Derby follow a true wireless, in-ear design with no cables, neckband, or wingtips involved. They carry an IPX5 ingress protection rating, meaning they are built to handle sweat and moisture during physical activity. Stereo speakers are present, while the overall form factor stays compact and wire-free for everyday portability.

Sound quality:

has active noise cancellation (ANC) ✕
has passive noise reduction ✓
driver unit size 13 mm
lowest frequency 20 Hz
highest frequency 20000 Hz
has a neodymium magnet ✕

The Boult Audio Derby use a 13 mm driver unit and cover a frequency range of 20 Hz to 20,000 Hz. Ambient noise is handled through passive noise reduction rather than active noise cancellation, which is not supported. The earbuds do not incorporate a neodymium magnet in their driver configuration.

Power:

Battery life 8 hours
Battery life of charging case 92 hours
charge time 1.5 hours
has wireless charging ✕
has a battery level indicator ✓
has a rechargeable battery ✓

The Boult Audio Derby offer 8 hours of battery life per charge, with the included charging case extending total playtime to 92 hours. A full recharge takes 1.5 hours, and the earbuds feature a rechargeable battery with a battery level indicator to keep track of remaining power. Wireless charging is not supported, so the case relies on a wired connection for charging.

Connectivity:

has fast pairing ✕
Has USB Type-C ✓
Bluetooth version 5.4
has LDAC ✕
has LDHC ✕
has aptX Adaptive ✕
has aptX Low Latency ✕
has aptX HD ✕
has aptX ✕
has aptX Lossless ✕
audio latency 45 ms
has aptX Voice ✕
maximum Bluetooth range 10 m
supports Bluetooth pairing using NFC ✕
Can be used wirelessly ✓
has AAC ✓

The Boult Audio Derby connect wirelessly via Bluetooth 5.4 with a maximum range of 10 m and an audio latency of 45 ms. The AAC codec is supported, while higher-end audio codecs including LDAC, LDHC, aptX, aptX HD, aptX Adaptive, aptX Low Latency, aptX Lossless, and aptX Voice are not available. Pairing is handled through standard Bluetooth without fast pairing or NFC support, and the charging case uses USB Type-C for wired charging.

Features:

has ambient sound mode ✕
has in/on-ear detection ✕
has find device feature ✕
Supports fast charging ✓
multipoint count 2
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 ✕

The Boult Audio Derby support multipoint connectivity with up to two devices simultaneously and can function as a headset for calls, backed by a mute function and voice prompts. Fast charging is supported, and controls are handled through an on-device panel rather than an in-line control panel. A travel bag is included in the box, adding a practical storage option. Ambient sound mode, in/on-ear detection, a find device feature, and a body temperature sensor are not part of the feature set.

Microphone:

number of microphones 4
has a noise-canceling microphone ✓

The Boult Audio Derby feature a four-microphone array with noise-canceling capability, allowing the earbuds to reduce unwanted background sound during calls and voice interactions.

Final Verdict

The Boult Audio Derby present a straightforward true wireless earbud option that delivers where everyday practicality matters most. The standout attribute is its combined 92-hour battery system, which alongside fast charging makes it a reliable choice for users who dislike frequent recharging. IPX5 sweat resistance and dual-device multipoint support add real-world convenience, particularly for active users and those juggling multiple devices. However, the lack of active noise cancellation, ambient sound mode, and advanced audio codecs signals that the Derby is positioned firmly as a functional daily driver rather than a feature-rich or audiophile-grade product. For users whose priorities align with endurance, call quality, and straightforward wireless use, the Boult Audio Derby covers the essentials competently.

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