First impression: simple, but purposeful
The UBoom L doesn’t try to stand out visually. It looks like what it is—a practical, no-nonsense portable speaker.
Cylindrical design (very familiar if you’ve seen JBL Flip or UE Boom)
Fabric mesh exterior with rubberized controls
Lightweight (~650g), easy to carry anywhere
What you notice quickly is usability. The buttons are large, easy to press, and spaced well. You don’t need to look at it to control it—and that matters in real life.
It’s not premium. But it doesn’t feel cheap either. Just… functional.
Sound quality: surprisingly well-tuned (for the price)
A speaker “tuned” to sound good
One of the more interesting things about the UBoom L is that it was tuned with input from audio enthusiast Olaf Lubanski (Oluv)
And you can actually hear that.
Bass: decent, but not dominant
The UBoom L uses:
2 x 55mm drivers
Passive radiators on both sides
The result:
Clean bass, not overly boomy
Enough punch for casual listening
Lacks deep sub-bass (you won’t “feel” it much)
If you’re into EDM or heavy hip-hop, it might feel a bit light. But for general music, it’s balanced.
Midrange: the real strength
This is where the UBoom L stands out.
Vocals are:
Clear
Forward
Easy to understand
Even objective reviews note that voices and lead instruments are clearly reproduced
Podcasts, acoustic tracks, YouTube videos—it handles these really well.
Treble: safe and slightly rolled off
High frequencies are present, but not very detailed.
No harshness
Slight lack of sparkle
Can feel a bit “flat” at times
This makes it easy to listen to for long sessions—but not ideal for critical listening.
Overall sound character
The best way to describe it:
Balanced – clean – slightly soft
It doesn’t try to impress with bass or brightness. It just sounds… correct.
Loudness & performance
For a 28W speaker, the UBoom L performs decently:
Works well in small to medium rooms
Fine for small outdoor groups
Struggles a bit in large open spaces
It’s not a “party speaker”—but it’s loud enough for everyday use.
Sound modes: actually useful
Unlike many budget speakers, the UBoom L includes three sound modes:
Indoor mode: balanced, cleaner sound
Outdoor mode: boosts bass + treble for open spaces
Video mode: reduces Bluetooth latency
These aren’t gimmicks—they genuinely change how the speaker behaves depending on your situation.
Battery life: good, but realistic
EarFun claims around 16 hours of playback
In real use:
Moderate volume → ~12–14 hours
Higher volume → less
It’s solid, but not class-leading.
Charging takes about 4 hours via USB-C, which is reasonable.
Durability: built for outdoor use
The UBoom L is rated IP67:
Waterproof
Dustproof
Even floats on water
In practice, it handles:
Rain
Poolside use
Dusty environments
That said, like all electronics, long-term water exposure is still a risk (real users have mixed experiences).
Connectivity & features
You get the essentials:
Bluetooth 5.0
Stereo pairing (connect two speakers)
AUX input (rare at this price)
Built-in mic for calls
No app. No advanced EQ. No smart features.
Simple—but effective.
Downsides (keeping it honest)
Bass lacks depth compared to bigger speakers
Treble isn’t very detailed
No app or advanced EQ
Not loud enough for big outdoor use
Some firmware-related inconsistency
Final verdict
The EarFun UBoom L is not trying to be the best speaker.
It’s trying to be the smartest buy—and in many ways, it succeeds.
It gives you:
Clean, balanced sound
Practical features (modes, AUX, stereo pairing)
Solid durability for outdoor use
It’s not exciting. It’s not premium.
But it’s reliable, easy to use, and surprisingly well-tuned for the price.
And sometimes—that’s exactly what you need.