I needed to upgrade the firmware. Without upgrade it was not so good. The hardware on the other had is good. A combinati... Show Full Review
Durable
Best in Sound Quality
Technologically Advanced
Value
Comfort
Expert Support
18-Month Warranty
Secure payment
30-Day Money-Back
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JumboBass™ TECHNOLOGY
EarFun's JumboBass technology is a one-of-a-kind bass boost algorithm. Developed exclusively for enhancing bass frequencies and power by integrating the customized digital signal processor and multiple dynamic range controllers. This means the bass can be enhanced while still managing to produce high-pitched vocals.
SOUND YOU'LL WANT TO SHARE
Enjoy deep, punchy bass sound with EarFun innovative JumboBass™ technology UBOOM L speaker. Dual passive radiators work together with the 55mm dynamic bass booster speakers to enhance low-end tones, giving a clearly punchy bass sonic experience.
![speaker]()
SIDE PASSIVE RADIATORS
The layout of the side passive radiators has been optimized to reproduce clear bass sound.
![Passive Radiators]()
GET PARTY BOOMING WITH STEREO PAIRING
Pair two UBOOM L speakers together for stereo and bigger sound, so everyone dances to the same beat.
TOTALLY WATERPROOF AND WASHABLE
With an IP67 rating, your speaker is waterproof and salt-water-resistant -- so you've no worries using it by the sea or the pool -- and there's no problem washing it either. Plus, it floats too. So if you drop it in the pool, it will pop to the surface in seconds–ready to rage.
ALWAYS ON CALL
The speakerphone function offers a convenient way to talk hands-free, whether it's a conference call for work or a chat with friends.
HEAR IT IN YOUR WAY
Multi Sound Modes
![sound mode]()
Indoor / Outdoor / Video Mode
Dimensional experience with DSP technology and switchable three sound mode.
![In/out]()
[A]: Outdoor mode On | [B]: Indoor mode On
Send your music to a wider area, creating a festival vibe, wherever you are.
KEEPS UP WITH YOU ALL DAY
16 hours Playback
Built-in 5200 mAh rechargeable batteries allow for up to 16 hours of playtime on a full charge.
USB Type-C® ports
The USB Type-C® ports provide convenient connectivity.
Aux Input
3.5mm auxiliary input allows you to connect to other sources.
Reviews
5
70REVIEWS
-Rating Snapshot
- 5 100%
- 4 0%
- 3 0%
- 2 0%
- 1 0%
-Average Customer Ratings
- Overall 5
- Durable 4.8
- Best in Sound Quality 4.9
- Technologically Advanced 4.5
- Value 5
- Comfort 4.7
- Most Helpful Favorable Review
· 05 Aug 2022
- Good office speaker for near field listeting
6 of 6 people found this helpful
5 of 70 User Reviews
· 18 Oct 2025
EarFun UBOOM L (2 of them for TWS)
I have to say that this is an absolute no brainer, especially for that action price. After upgrading firmware to v1.2.7 and using the presets from Oluv'sone I am really blown away by the sound quality they offer. They have for exmaple better bass than my Sonys SRS-XB100 in stereo, ofc they are bigger, but for +- the same price as the Sony's I can only highly recommend them guys. What I've found is that by these smaller speakers is important to always buy 2 for stereo (it has to be supported ofc). Good job earfun and especially thanks to Oluv for tuning them. Cheers! :) -> 1 Minus for me is that the back cover of ports is a little bit hard to open with nails, but so big issue.
Durable
Best in Sound Quality
Technologically Advanced
Value
Comfort
Helpful?
· 17 Sep 2025
Earfun UBOOM L
Only had the speaker for a couple of days, but so far, very impressed with the build and sound quality, especially for the discounted price (48 USD). Now that the speaker is available in the Earfun App, it makes things a lot easier for customising the sound to your taste.
Durable
Best in Sound Quality
Technologically Advanced
Value
Comfort
Helpful?
· 29 Jul 2025
love it
Best value for money bluetooth speaker.
Durable
Best in Sound Quality
Technologically Advanced
Value
Comfort
Helpful?
· 24 Jul 2025
Natural out of the box (Oluv), can be made more "fun" with app EQ
Like it quite a lot. Wasn't fan of included presets, but EQ a bit and it sounds very good. Definitely for home/office use, loses basically all bass on higher volumes. Or rather other frequencies drown it out. Bought it during sale so for the price have literally nothing to complain about.
Although sometimes video mode can cause weird crackling, but it disappears after reconnecting
Durable
Best in Sound Quality
Technologically Advanced
Value
Comfort
Helpful?
· 10 Nov 2024
Bravo earfun
In the category,I never hear something better.
And what a price!
Durable
Best in Sound Quality
Technologically Advanced
Value
Comfort
Helpful?
Expert Support
18-Month Warranty
Secure payment
30-Day Money-Back
Global Shipping