EarFun UBOOM L Portable Bluetooth Speaker


1000+ Head-Fier
Review: EarFun UBoom L - Dynamic Liberty
Pros: Great value
Excellent sound quality
Powerful even in outdoor
Cons: Lack of smartphone application

Where to Buy​

You can grab it at following sites:


EarFun was founded in 2018 by a collection of skilled designers, engineers, and music lovers. They share a goal: to develop next-generation wireless audio devices that incorporate the most cutting-edge technologies to resolve current-generation wireless audio device obstacles.

EarFun thinks that technology has the potential to enrich modern lifestyles and seamlessly integrate with our daily activities. Their tagline reinforces this belief, "Better Sound, Better Life." - EarFun.

EarFun includes the latest R&D results into every release, including the UBoom L. Features like Dual Passive Radiators and Dynamic Bass Boost Drivers showcase EarFun's R&D results. They are the selling points for UBoom L.

EarFun's "tradition" has been to surprise its users with all these enhancements in their products. Our objective in this article is to determine whether these enhancements are mere marketing pitches or if they lead to improved performance.



With dimensions of 210 x 78 x 72mm and a weight of 2.1 pounds, the EarFun UBoom L speaker is relatively easy to hold with one hand, even if you have small hands. It is covered in black woven fabric and has a rubbery coating over its frame, providing some additional grip.

The UBoom L looks like (almost) any other Bluetooth speaker on the market, which is both good and bad. Unlike other party speakers, there are no flashy light shows or spotlights on the EarFun UBoom L.

You can control the volume, power, Bluetooth, play/pause, and sound modes using the tactile buttons on the top. You can choose between indoor and outdoor modes, the latter of which amplifies bass and improves performance in noisy outdoor settings.

A rubber cover on the back of the device protects the 3.5mm aux input and USB-C port from damage. It does not include a charging plug, but it does include a USB-C cable. Since the EarFun UBoom L is waterproof, you will not have to worry about it getting wet while hiking in adverse weather conditions or even while swimming.

Although the EarFun UBoom L is designed to sit horizontally, it can also be placed vertically on most surfaces. However, from a sound perspective, it is best to keep it horizontal.

The EarFun UBoom L speaker offers up to 16 hours of battery life. This device has a 5,200 mAh battery that will keep you going all day long without any issues. In addition, Bluetooth 5.0 ensured that our connection was never interrupted.


Sound Quality​

The EarFun UBoom L features two 55mm drivers and two passive bass radiators. This combination results in a reasonably strong audio experience. Audiophiles passionate about bass will find that the bass response is adequate.

You can still benefit from a wide soundstage even with a single speaker. Adding a second speaker will improve the bass and widen the soundstage, but one speaker will still immerse you in the music.

You can hear some detailed mids and crisp trebles with the Indoor mode. It is not harsh in any way. The UBoom L produces the same results when listening to classical music - a smooth, comfortable sound.

The bass is boosted somewhat when you switch to Outdoors mode, so you may choose to do so as needed. It is still possible to hear each note clearly, as this mode ensures you can listen to it above background noise. Since there is no app for tweaking the equalizer, you will have to change modes to customize your listening experience.



It cannot be denied that the EarFun UBoom L speaker is a superb value.

Earfun's UBoom L offers excellent sound-per-dollar value, regardless of how you look at it.

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