---
product_id: 449974898
title: "UBOOM L Bluetooth Speaker, Portable Speaker 28W Loud Stereo Sound, Rich Bass, IP67 Waterproof & Dustproof, Dual Pairing, Built-in Mic, Low Latency, Wireless Speakers for Party, Indoor & Outdoor"
brand: "earfun"
price: "€ 127.68"
currency: EUR
in_stock: true
reviews_count: 9
category: "Ear Fun"
url: https://www.desertcart.sk/products/449974898-uboom-l-bluetooth-speaker-portable-speaker-28w-loud-stereo-sound
store_origin: SK
region: Slovakia
---

# IP67 waterproof & dustproof 28W loud stereo power True Wireless Stereo dual pairing UBOOM L Bluetooth Speaker, Portable Speaker 28W Loud Stereo Sound, Rich Bass, IP67 Waterproof & Dustproof, Dual Pairing, Built-in Mic, Low Latency, Wireless Speakers for Party, Indoor & Outdoor

**Brand:** earfun
**Price:** € 127.68
**Availability:** ✅ In Stock

## Summary

> 🎉 Elevate your sound game—wherever life takes you!

## Quick Answers

- **What is this?** UBOOM L Bluetooth Speaker, Portable Speaker 28W Loud Stereo Sound, Rich Bass, IP67 Waterproof & Dustproof, Dual Pairing, Built-in Mic, Low Latency, Wireless Speakers for Party, Indoor & Outdoor by earfun
- **How much does it cost?** € 127.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/449974898-uboom-l-bluetooth-speaker-portable-speaker-28w-loud-stereo-sound)

## Best For

- earfun enthusiasts

## Why This Product

- Trusted earfun brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seamless Dual Pairing:** Double the volume, double the vibe—wirelessly pair two UBOOM L speakers for an epic stereo experience that neighbors will envy.
- • **Immersive 28W Stereo Sound:** Feel every beat with powerful dual 55mm drivers and passive radiators delivering booming bass and crystal-clear clarity.
- • **All-Weather Ready with IP67:** Take your party anywhere—rain, pool, or dust storms—this speaker floats and keeps playing with full waterproof and dustproof protection.
- • **Smart Indoor & Outdoor Modes:** Tailor your soundscape with EQ presets designed by sound engineers for perfect bass and clarity whether inside or out.
- • **Low Latency Video Mode & Built-in Mic:** Sync your audio flawlessly with video and take calls hands-free, making this speaker your ultimate multitasking companion.

## Overview

The EarFun UBOOM L is a compact yet powerful 28W Bluetooth speaker featuring dual 55mm drivers and passive radiators for rich stereo sound and deep bass. Engineered with advanced DSP algorithms and customizable indoor/outdoor EQ modes, it delivers clear, immersive audio tailored to your environment. Its IP67 rating ensures full waterproof and dustproof durability, making it perfect for any adventure. With True Wireless Stereo pairing, low latency video mode, and a built-in mic, the UBOOM L is designed for seamless connectivity and versatile use, whether at home, on the go, or hosting the ultimate party.

## Description

desertcart.com: EarFun UBOOM L Bluetooth Speaker, Portable Speaker 28W Loud Stereo Sound, Rich Bass, IP67 Waterproof & Dustproof, Dual Pairing, Built-in Mic, Low Latency, Wireless Speakers for Party, Indoor & Outdoor : Electronics

Review: Excellent speaker with good low end and clarity - This is an excellent Bluetooth speaker if you are looking for a Bose-type replacement at a great price. I had the original generation Bose SoundLink, but it became a paperweight due to the battery no longer holding charge (and not working off a cable either). This Earfun UBoom L has a similar sound profile at lower volumes, offers great Bluetooth connectivity, and has clear, believable sound listening in small spaces or at low or moderate volumes. I'm not a sound engineer or audio expert, but from my interest in stereo and guitar equipment, I became aware of something called the Fletcher-Munson Effect. Basically, the human ear is more sensitive to mid-range frequencies (roughly between 2kHz and 5kHz). This means that lower volumes, the sound you are perceive will seem to have less bass than if the same EQ were applied at a louder volume. As a result, manufacturers of small-format speakers figured out that you need to boost certain frequencies at low volumes and generally reshape the EQ for your ears to perceive what would be a "flat" setting at a louder volume. Bose was a pioneer in popularizing this concept, but it's widely used in all types of affordable Bluetooth speakers, and the UBoom L is a great example of that. It sounds great out of the box, but with a phone app, you can apply special indoor and outdoor EQ settings from a sound engineer named "Oluv". If you're like me and frequently use Bluetooth speakers to play background music at very low volumes (while working, studying, or just for general ambience), then you'll appreciate this. There was a whole "Beats vs. Bose" thing about 15 years ago where people became obsessed with having as much bass as possible. Similar to a Bose unit, the UBoom L has plenty of low end, but with the Oluv EQ, it retains clarity and does not overwhelm the other frequencies. I will say that there is plenty of low end in this speaker, and there are presets and custom EQ's you can play with if you prefer a bassier sound. The internal battery charges with a USB-C cable, and I appreciated that they included an AUX jack. Some of these speakers are great to use with other audio equipment and instruments that either do not have Bluetooth, or would suffer from latency. There are plenty of great budget and premium Bluetooth speaker options nowadays, but this is a great all-around product. UPDATE (08/20/25): Need to make a slight correction to my review above - the UBoom L has a significant latency (audio delay between input and sound playing through speaker) when using the AUX 3.5mm jack. Apparently, this is a common issue not just with the Earfun units, specifically, but with most Bluetooth speakers that use any type of digital processing or EQ to produce sound. The latency is significant - around 250 milliseconds, I believe - which is far too large to use it effectively to play sound from any instrument. However, since this is a very "niche" use of this otherwise excellent Bluetooth speaker, I am not downgrading my review score.
Review: Great speaker - superb value - Not the loudest but great audio quality. Oluv tuning really makes the speaker sound wonderful. Can’t beat the price and quality. I think it sounds better than models that cost more. Good battery life. Connects to phone quickly. Solid build. Doesn’t have a travel case which frustrating. You make a sacrifice for sound loudness and quality, so this model goes loud but not as loud as some similar models that sound worse.

## Features

- 🎤[Remarkable DSP Algorithms, A Sound You’ll Want to Share] The advanced Digital Signal Processing (DSP) keeps the noise at bay for a clean sound while still preserving the sonic details of your favorite tracks. With EarFun’s proprietary JumboBass Technology, a magic music world in huge stereo sound is opened for you.
- 🎤[Two 55mm Drivers and Passive Radiators, To Feel The Booming Bass] The enhanced 2 high-sensitivity drivers deliver breathtaking stereo sound with exceptional clarity and zero distortion. The dual external passive radiators will demonstrate how powerful this Bluetooth speaker is. You can hear the bass, feel the bass and see the bass.
- 🎤[Indoor & Outdoor Mode, Bring the Party Anywhere] Indoor modes deliver full bass and balanced sound, whereas outdoor modes deliver louder sound and longer battery life. You can also turn the video mode on with super low latency for better video experience while indoors. EarFun Bluetooth speaker size is small, but you can enjoy the powerful sound through the large output of 28W outdoors.
- 🎤[IP67 Dustproof & Waterproof, Ideal Bathroom Speaker] The wireless speaker is IP67 Fully Waterproof with EarFun’s Innovative Sweatshield Technology, and it’s crafted and sealed with waterproof materials so there is no problem washing, and it floats too. If you drop it in the pool, it will pop to the surface in seconds.
- 🎤[Wireless Stereo Pairing, To Get More Powerful Sound] Using the latest True Wireless Stereo Technology, you can Pair two UBOOM L via a single device for double the volume or huge stereo sound. The party mode make it possible if you want to share the your music with others next door.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B1PJ5SQ7 |
| Audio Driver Size | 55 Millimeters |
| Audio Driver Type | Dynamic Driver |
| Batteries | 1 Lithium Ion batteries required. |
| Best Sellers Rank | #18,891 in Electronics ( See Top 100 in Electronics ) #504 in Portable Bluetooth Speakers |
| Bluetooth Range | 10 Meters |
| Charging Time | 4 Hours |
| Color | Black |
| Compatible Devices | any Bluetooth-enabled device |
| Control Method | Touch |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,103) |
| Date First Available | May 19, 2022 |
| Included Components | 1×18-month Warranty Card, 1×EarFun UBOOM L Bluetooth Speaker, 1×Type C Charging Cable, 1×User manual |
| Input Voltage | 7.2 Volts |
| Is Waterproof | True |
| Item Weight | 1.43 pounds |
| Item model number | SP300 |
| Language | English |
| Manufacturer | EarFun |
| Material | Composite |
| Maximum Range | 15 Meters |
| Model Name | EarFun UBOOM L |
| Mounting Type | Tabletop Mount/Freestanding |
| Number of Batteries | 1 Lithium Ion batteries required. |
| Number of Items | 1 |
| Number of Power Levels | 1 |
| Power Source | Battery Powered |
| Product Dimensions | 2.83"D x 8.27"W x 3.07"H |
| Recommended Uses For Product | For Smartphones or Tablets |
| Series Number | 300 |
| Shape | rectangular prism |
| Speaker Size | 55 Millimeters |
| Speaker Type | Subwoofer |
| Special Feature | Bluetooth 5.0 connection; Huge Stereo Sound with Intense Bass;Dual Passive Radiators; DSP Algorithms;16 hours Play Time, Indoor & Outdoor Mode; Video Mode; IP67 Dustproof & Waterproof; Wireless Stereo Pairing |
| Specific Uses For Product | Party |
| Subwoofer Diameter | 55 Millimeters |
| Surround Sound Channel Configuration | 2.0 |
| Unit Count | 1 Count |
| Warranty Type | Limited |
| Water Resistance Level | Waterproof |
| Wireless Communication Technology | Bluetooth |
| Woofer Diameter | 55 Millimeters |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** EarFun
- **Connectivity Technology:** Bluetooth
- **Frequency Response:** 20 KHz
- **Speaker Maximum Output Power:** 28 Watts

## Images

![UBOOM L Bluetooth Speaker, Portable Speaker 28W Loud Stereo Sound, Rich Bass, IP67 Waterproof & Dustproof, Dual Pairing, Built-in Mic, Low Latency, Wireless Speakers for Party, Indoor & Outdoor - Image 1](https://m.media-amazon.com/images/I/710olipTCvL.jpg)

## Questions & Answers

**Q: Why is you tube sound not playing through the speaker?**
A: What phone are you using. Mine works fine. I’m just having quality control issues with mine. The fabric is fraying. I’m going to exchange it for another one.

**Q: I just received mine, has anyone experienced any clipping sound issues ?**
A: I have two bought at different times and have not had any issues at all. Is the clipping all the time or only when playing loud? Try a different device and different source for your music. I have been using Tidal without any issues and the high res files sound great.

**Q: First time using my speaker. I turn it on and it turns right off. I cant find any answers in the manual. Any ideas?**
A: Did you charge it before using. The Directions tell you to do so. you will see four lights together when fully charged, If It doesn't change send it back

**Q: How is this compared to Ultimate Ears WonderBoom 3 WRT balanced neutral sound quality?**
A: I don't know about your speakers, but the sound quality is A1. I have a flat speakers to go in my studio and they are flat. The frequency is on paper. However the bass is not very good. They lack bass.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent speaker with good low end and clarity
*by S***1 on August 14, 2025*

This is an excellent Bluetooth speaker if you are looking for a Bose-type replacement at a great price. I had the original generation Bose SoundLink, but it became a paperweight due to the battery no longer holding charge (and not working off a cable either). This Earfun UBoom L has a similar sound profile at lower volumes, offers great Bluetooth connectivity, and has clear, believable sound listening in small spaces or at low or moderate volumes. I'm not a sound engineer or audio expert, but from my interest in stereo and guitar equipment, I became aware of something called the Fletcher-Munson Effect. Basically, the human ear is more sensitive to mid-range frequencies (roughly between 2kHz and 5kHz). This means that lower volumes, the sound you are perceive will seem to have less bass than if the same EQ were applied at a louder volume. As a result, manufacturers of small-format speakers figured out that you need to boost certain frequencies at low volumes and generally reshape the EQ for your ears to perceive what would be a "flat" setting at a louder volume. Bose was a pioneer in popularizing this concept, but it's widely used in all types of affordable Bluetooth speakers, and the UBoom L is a great example of that. It sounds great out of the box, but with a phone app, you can apply special indoor and outdoor EQ settings from a sound engineer named "Oluv". If you're like me and frequently use Bluetooth speakers to play background music at very low volumes (while working, studying, or just for general ambience), then you'll appreciate this. There was a whole "Beats vs. Bose" thing about 15 years ago where people became obsessed with having as much bass as possible. Similar to a Bose unit, the UBoom L has plenty of low end, but with the Oluv EQ, it retains clarity and does not overwhelm the other frequencies. I will say that there is plenty of low end in this speaker, and there are presets and custom EQ's you can play with if you prefer a bassier sound. The internal battery charges with a USB-C cable, and I appreciated that they included an AUX jack. Some of these speakers are great to use with other audio equipment and instruments that either do not have Bluetooth, or would suffer from latency. There are plenty of great budget and premium Bluetooth speaker options nowadays, but this is a great all-around product. UPDATE (08/20/25): Need to make a slight correction to my review above - the UBoom L has a significant latency (audio delay between input and sound playing through speaker) when using the AUX 3.5mm jack. Apparently, this is a common issue not just with the Earfun units, specifically, but with most Bluetooth speakers that use any type of digital processing or EQ to produce sound. The latency is significant - around 250 milliseconds, I believe - which is far too large to use it effectively to play sound from any instrument. However, since this is a very "niche" use of this otherwise excellent Bluetooth speaker, I am not downgrading my review score.

### ⭐⭐⭐⭐⭐ Great speaker - superb value
*by D***P on November 17, 2025*

Not the loudest but great audio quality. Oluv tuning really makes the speaker sound wonderful. Can’t beat the price and quality. I think it sounds better than models that cost more. Good battery life. Connects to phone quickly. Solid build. Doesn’t have a travel case which frustrating. You make a sacrifice for sound loudness and quality, so this model goes loud but not as loud as some similar models that sound worse.

### ⭐⭐⭐⭐⭐ Speaker with versatile Indoor/Outdoor tuning. Tuned by Oluv.
*by S***R on July 12, 2022*

EDIT: I’ve slightly updated this review, because I ended up purchasing another speaker for stereo sound. I own two of the original UBOOM’s. This new larger UBOOM L has a different form factor and sounds much better tuned by Oluv. Keep in mind everyone’s ear is different. My ear wants bass, but I don’t want bass that is boomy and that takes away from overall clarity. Oluv’s tuning does two things in my opinion. Indoor Mode allows you to listen in your home and even at very low levels. You won’t disturb your neighbors in an apartment setting and you can still enjoy full and balanced sound at lower volume settings. The bass is there, but it’s not boomy bass. Maybe a bass head won’t like that? Personally, I’m not a fan of boomy bass that overwhelms the clarity of the music. If you want a little more bass, Outdoor Mode is the way to go. There’s more bass in that mode, but still tuned so it doesn’t overwhelm everything. Oluv gave people choices here, which I like. I see myself using both modes, when it’s appropriate in my environment and still have balanced tuning either way at any volume level. I ended up purchasing two of these speakers for stereo sound. There’s plenty of volume with one speaker, but the L/R stereo separation playing two together is so worth it in my opinion. Overall this an excellent speaker, at a great price point. The UBOOM L gives you the performance and sound of much more costly speakers. There are plenty of Bluetooth speakers released without much thought to tuning. Some have too much bass and others too much treble. This tuning is balanced and neutral. I like that Oluv collaborated with Earfun. I hope he does more of this in the future. In regards to the firmware. It can be found at Earfun’s website under Support/Product Guides, then click on UBOOM L. Just download the media product tool, firmware and instructions. It’s pretty straightforward. Just make sure you have a USB-C data cable. Less than a minute to run the update. After the update, forget the device in your Bluetooth settings and reconnect. I’ve attached photos and a video clip of the speakers connected in Stereo playing a track from the Spotify playlist of NCS/NoCopyrightSounds. They’re playing in Indoor Mode. Please use your headphone’s or ear bud’s to listen. (If you listen with a mobile device or tablet, you won’t get the full effect). You can hear the combination of clarity, bass and stereo separation in the video. I hope this video helps. I would definitely recommend giving this speaker a try. Music / NoCopyrightSounds: “Slow Down” by Jim Yosef, Shiah Maisel

## Frequently Bought Together

- EarFun UBOOM L Bluetooth Speaker, Portable Speaker 28W Loud Stereo Sound, Rich Bass, IP67 Waterproof & Dustproof, Dual Pairing, Built-in Mic, Low Latency, Wireless Speakers for Party, Indoor & Outdoor
- EarFun UBOOM X Portable Bluetooth Speaker, 80W Stereo with JumboBass, IP67 Waterproof Outdoor Speaker, RGB Light, 30H Playtime, Custom EQ, PowerBank, Bluetooth 5.3 Speakers for Outdoor, Camping, Beach

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-04*