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EarFun UBoom X specifications and in-depth review

EarFun UBoom X

Manufacturer: EarFun

The EarFun UBoom X is a sizeable portable speaker built around a four-driver configuration that includes a subwoofer and passive radiator for extended low-frequency output. It weighs 4,150 g and measures 400 × 251 × 117 mm, placing it firmly in the category of speakers designed for stationary or semi-portable use rather than on-the-go carry. IPX7 water resistance makes it capable of handling submersion, which adds a degree of durability for outdoor settings. Controls are placed directly on the device, and stereo pairing with a second compatible unit is supported.

The speaker delivers 4 × 20W of audio output through its stereo driver arrangement and connects wirelessly via Bluetooth 5.3 with a maximum range of 10 m. An AUX input is available for wired sources, and two USB ports including a USB Type-C connection are on board — one of which supports power bank functionality for charging external devices. The 8,400 mAh rechargeable battery provides up to 30 hours of playback, with a full charge taking 6 hours. Voice commands and voice prompts are supported, a sleep timer is included, and a battery level indicator keeps track of remaining charge. Wireless charging is not available, and no advanced Bluetooth codecs such as aptX or LDAC are supported.

Pros
  • 30 hours of battery life from an 8,400 mAh battery makes it well-suited for extended outdoor sessions without needing a recharge
  • IPX7 water resistance allows the speaker to handle submersion, not just splashing, which adds meaningful durability for outdoor use
  • The built-in power bank function lets users charge external devices directly from the speaker's battery
  • A stereo subwoofer and passive radiator configuration, combined with 80W total output across four drivers, provides a more substantial low-end presence than typical portable speakers
  • Stereo pairing with a second unit is supported, expanding the soundstage when two speakers are available
  • Voice commands and smartphone remote control add hands-free and remote playback management without needing to interact with the speaker directly
Cons
  • No advanced Bluetooth codecs are supported — including AAC, LDAC, aptX, and all aptX variants — limiting wireless audio quality to standard transmission
  • A 6-hour charge time is relatively long, and wireless charging is not available to offer a more convenient alternative
  • At 4,150 g and 400 mm wide, the speaker is bulky and heavy, making it less practical to carry frequently or over longer distances
  • No travel bag is included, which is a notable omission given the speaker's size
  • The single microphone lacks noise-canceling capability, which may affect call clarity in louder environments
  • Fast pairing is not supported, adding a small but consistent friction point when connecting to new devices
Who is this for?

The EarFun UBoom X is well-matched to users who want a speaker for extended outdoor gatherings, garden use, or pool-side settings where IPX7 water resistance provides genuine peace of mind beyond basic splash protection. The 30-hour battery life makes it a practical choice for all-day events without access to a power source, and the built-in power bank function adds utility for users who also need to keep other devices charged. Those who plan to use two units together will also benefit from stereo pairing support, which broadens the listening experience across a larger space.

Who is this NOT for?

Users who prioritize portability and ease of transport will find the UBoom X's 4,150 g weight and 400 mm width a genuine inconvenience — it is not a speaker designed for frequent carrying or backpack use, and the absence of a travel bag compounds this. Listeners who expect high-quality wireless audio transmission through codecs such as LDAC, AAC, or any aptX variant will be disappointed, as the speaker relies on standard Bluetooth audio without enhanced codec support. The 6-hour charge time and lack of wireless charging also make it a poor fit for users who need quick turnaround between uses.

Design:

Ingress Protection (IP) rating IPX7
volume 11746.8 cm³
drivers count 4
has a neodymium magnet ✕
control panel placed on a device ✓
water resistance Water resistant
travel bag is included ✕
has a touch screen ✕
has a detachable cable ✕
has a remote control ✕
weight 4150 g
height 251 mm
width 400 mm
thickness 117 mm

The EarFun UBoom X has a physical footprint of 400 × 251 × 117 mm and a volume of 11,746.8 cm³, placing it among the larger end of portable speakers at a weight of 4,150 g. It houses four drivers and carries an IPX7 water resistance rating, meaning it can withstand submersion rather than just splash exposure. Controls are built directly into the device body, while a touchscreen, remote control, and detachable cable are all absent. No travel bag is included in the box, and the drivers do not use neodymium magnets.

Sound quality:

has stereo speakers ✓
has a subwoofer ✓
audio output power 4 x 20W
Has a passive radiator ✓
number of microphones 1
has a noise-canceling microphone ✕
has a magnetic shielding ✕

The EarFun UBoom X delivers 4 × 20W of audio output through a stereo speaker arrangement that is complemented by a dedicated subwoofer and a passive radiator, the latter helping to extend low-end response without requiring additional active amplification. A single microphone is built in, though it does not feature noise-canceling capability. Magnetic shielding is not present in the design.

Power:

battery power 8400 mAh
Battery life 30 hours
charge time 6 hours
has a battery level indicator ✓
has a rechargeable battery ✓
has a removable battery ✕
has wireless charging ✕

The EarFun UBoom X is powered by an 8,400 mAh rechargeable battery that provides up to 30 hours of playback on a full charge, which takes approximately 6 hours to complete. A battery level indicator is included so remaining charge can be monitored at a glance. The battery is not removable, and wireless charging is not supported — charging is handled exclusively through a wired connection.

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 10 m
supports Wi-Fi ✕
USB ports 2
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 EarFun UBoom X connects wirelessly via Bluetooth 5.3 with a maximum range of 10 m, and also accepts a wired source through an AUX input. Two USB ports are on board, including a USB Type-C connection, though there is no 3.5 mm headphone socket, microphone input, or external memory slot. Wi-Fi, Ethernet, DLNA, AirPlay, Chromecast, and Auracast are all absent, as is NFC pairing. On the codec side, none of the advanced wireless audio formats are supported — including AAC, LDAC, LE Audio, aptX, aptX HD, aptX Adaptive, aptX Low Latency, and aptX Lossless — meaning the speaker relies on standard Bluetooth audio transmission without enhanced codec options.

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 EarFun UBoom X can be used wirelessly and supports smartphone remote control, allowing playback management from a connected device. Voice commands and voice prompts are both available, adding hands-free interaction to its feature set. A power bank function is built in, enabling the speaker to charge external devices directly from its battery. A sleep timer is also included for scheduled shutoff. Fast pairing, a mute function, and a built-in radio are not supported.

Miscellaneous:

supports pairing for stereo sound ✓

The EarFun UBoom X supports stereo pairing, allowing two compatible units to be linked together for a wider stereo soundstage.

Final Verdict

The EarFun UBoom X is a large-format portable speaker built around endurance and outdoor resilience rather than portability or audiophile-grade wireless transmission. Its 30-hour battery life paired with IPX7 water resistance gives it a clear identity as a speaker for extended outdoor use where durability and staying power matter more than compact form. The four-driver configuration with subwoofer and passive radiator rounds out a feature set that leans into output capacity. The trade-offs — a lengthy charge time, significant weight, and the absence of advanced codec support — are real, but they are consistent with what this type of speaker prioritizes. For users who need a durable, high-endurance speaker for stationary outdoor use and do not require frequent transport or lossless wireless audio, the UBoom X delivers a coherent and purposeful package.

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