

🎉 Elevate your sound game — party louder, live bolder!
The EarFun UBOOM L is a compact yet powerful 28W Bluetooth speaker featuring advanced DSP algorithms and JumboBass technology for rich, clear sound. Its rugged IP67 waterproof and dustproof build ensures durability for any environment, while Bluetooth 5.0 enables seamless wireless stereo pairing. With 16 hours of battery life and specialized indoor/outdoor modes, it’s designed to keep your music flowing wherever you go.



















| ASIN | B0B1PJ5SQ7 |
| Additional Features | 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 |
| Age Range Description | Adult |
| Antenna Location | For Smartphones or Tablets |
| Audio Driver Size | 55 Millimeters |
| Audio Driver Type | Dynamic Driver |
| Audio Encoding | Stereo |
| Audio Latency | 50 Milliseconds |
| Audio Output Mode | Stereo |
| Battery Average Life | 16 Hours |
| Battery Capacity | 5200 Milliamp Hours |
| Battery Charge Time | 4 Hours |
| Bluetooth Range | 10 Meters |
| Brand | EarFun |
| Built-In Media | 1×18-month Warranty Card, 1×EarFun UBOOM L Bluetooth Speaker, 1×Type C Charging Cable, 1×User manual |
| Color | Black |
| Compatible Devices | Gaming Console, Laptop, Smartphone, Tablet, Television |
| Connectivity Protocol | Bluetooth |
| Connectivity Technology | Bluetooth |
| Control Method | Touch |
| Controller Type | Button |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,022) |
| Enclosure Material | Composite |
| Frequency Response | 22 KHz |
| Input Voltage | 7.2 Volts |
| Is Electric | Yes |
| Is Waterproof | True |
| Item Dimensions D x W x H | 7.2D x 21W x 7.8H centimeters |
| Item Type Name | EarFun Uboom L-28W Bluetooth Speaker |
| Item Weight | 650 Grams |
| MP3 player | No |
| Manufacturer | EarFun |
| Maximum Range | 15 Meters |
| Model Name | EarFun UBOOM L |
| Model Number | SP300 |
| Mounting Type | Tabletop Mount/Freestanding |
| Number Of Circuits | 1 |
| Number of Audio Channels | 2.0 |
| Number of Batteries | 1 Lithium Ion batteries required. |
| Number of Items | 1 |
| Number of Power Levels | 1 |
| Power Source | Battery Powered |
| Series Number | 300 |
| Speaker Maximum Output Power | 28 Watts |
| Speaker Size | 55 Millimeters |
| Speaker Type | Subwoofer |
| Specific Uses For Product | Party |
| Subwoofer Connectivity Technology | Wireless |
| Subwoofer Diameter | 55 Millimeters |
| Tweeter Diameter | 1 Inches |
| Unit Count | 1 Count |
| Water Resistance Level | Waterproof |
| Wireless Technology | Bluetooth |
| Woofer Diameter | 55 Millimeters |
J**R
Sorprende la cantidad y sobretodo la calidad y naturalidad del sonido en un dispositivo tan compacto.
C**F
Latency when watching video is too high, even with the video mode enabled. Sound is ok but not great. Low on bass and general crispness of the sound. Volume controls directly control your devices audio, which i dont like because i cant control the sound volume as finely as id like. Ok build quality, ok price. Got this one because reviews where good. I do not agree and will not get a second unit as planned to try the stereo function.
Q**P
Excellent speaker and for the price, you won't be disappointed in the slightest. The equaliser takes a little playing around with, to get the best solution for your own ear preferences and the specific situation/room/ambience you are using the speaker in. I have had it for about 1 week. It seems to hold all frequencies of sound and clarity of music/vocals extremely well over any volume from low to max. I have a few other speakers and I feel this trumps the other ones for all-round quality of sound and is much more attractively priced. Good bang for your buck. I like it that much, that I am going to buy a second one so that I can pair them. It doesn't have a powerbank (no biggy), but it has a built in mic which is amazingly helpful for taking calls handsfree and the other person can hear you very clearly. Can't comment on durability yet as I haven't dropped it, or had it playing outside in the heat for any length of time. However, it looks and feels like it is solidly and professionally constructed. You can hold it in your hand easily, it's not too heavy. However, it could do with a wriststrap just for added convenience. I prefer it in all respects (price, quality of sound, loudness, features) over my comparable market bracket JBL Flip 2 and JBL Charge 6 speakers.
S**1
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.
K**E
Ich habe den Lautsprecher seit ca. 1 Monat und war so damit zufrieden das ich nach zwei Wochen mir noch einen besorgt habe (vor allem um Stereo/Party Modus im Garten zu Nutzen)! Der Lautsprecher ich sehr gut Verarbeitet und fühlt sich in der Hand sehr solide an. Es ist vielleicht nicht der Hingucker, aber es soll ja klingen und nicht aussehen! Es ist bis jetzt der grösster BT Lautsprecher in meiner kollektion (ich habe einen JBL und einen Denon) und er ist definitiv zu gross um Ihn einfach so mal in die Tasche zu werfen und überall mitnehmen, aber bei solchem Klang und Lautstärke ist es verständlich. Die größe entspricht ungefähr einer 1L Flasche - auf dem Fotos ist ein normales Feuerzeug als referenz. Die größe hat auch vorteile - die Lautstärke (dazu komme ich später) und die Laufzeit. Mit einer voll geladenem Akku hat bei mir der Lautsprecher 3 Parties durchgehalten (ca. 15 Stunden insgesamt). Der Lautsprecher wird mit USB-C geladen und in 3-4 Stunden wird das Akku voll. Die Bluetooth Verbindung ist sehr Stabil und die Reichweite ist gut genug für einen grossen Garten (Sehe Video Test#1). Einziges "aber" ist die Reichweite beim Stereo-Modus, und zwar nicht die Reichweite zwischen den Lautsprechern und dem Handy sondern die Reichweite zwischen den zwei Lautsprechern! Meine Idee war es die Zwei Lautsprecher an verschiedenen Seiten des Gartens zu platzieren und damit gute Lautstärke überall zu haben, aber dieses geht leider nicht weil, wenn die zwei Lautsprecher mehr als 5m getrennt sind bricht die wiedergabe auf beiden Lautsprechern. Dieses Verhalten ist gut auf meinen Video zu sehen im Test#2. Im Dual-Modus sollten die Lautsprecher also nicht weit auseinander sein - in meinem Fall habe ich beide auf einem Tisch in der Mitte des Gartens in gegenüberliegende Seiten gedreht, so das der Sound in beide Richtungen geht. Das wichtigste an einem Lautsprecher ist aber der Sound und der ist in diesem Fall sehr gut! Das Gerät verfügt über zwei einstellunge - Indoor und Outdoor. Im Indoor modus ist der Klang sehr dynamisch - der Bass ist voll und kräftig und die hohen töne sehr klar und akzentuiert. Wenns um den Klang geht kann der Earfun lautsprecher ohne Probleme mit deutlich teureren Lautsprechern verglichen werden - mein Denon klingt nicht besser als dieser Gerät. Die Lautstärke ist mehr als genügend für ein Wohnzimmer. Im Outdoor Modus wird die Lautstärke höher und der Bass wird noch Kräftiger. Auf der ganzen Lautstärke Skala klingt der Lautsprecher gut - sowohl auf der niedrigsten wie auch höchsten Stufe gibt es keine unangenehmen Verzerrungen. Ich kann persönlich den Lautsprecher nur empfehlen - er klingt wie eine höhere Preisklasse und hat keine größeren Mängel (wenn man die Größe oder Stereo-Reichweite nicht als höchste prio sieht)
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