EarFun Air Pro 4 Review

While these earbuds don't excel in any one area, they offer features normally reserved for far more expensive offerings, and they sound pretty good, too.

Sound Quality

While we enjoy listening to these earbuds and happily recommend them for the price, they don't deliver the most sophisticated experience. The soundstage is solid, the bass is rich, and the mids sound realistic. But while the treble range is bright, it lacks power and sparkle. These earbuds excel at delivering clean, precise separations between instruments and vocals, but fail to dazzle. Still, no matter the genre, they consistently polish our favorite songs to a soft shine.

These buds build a decent soundstage. While they don't create a broad, immersive sonic experience, they do give songs room to breathe. The separation between individual instruments and vocals is clear enough to place them in space and time. While the pianist is tickling the ivories to your right, you can tell when the singer takes center stage. Higher-scoring earbuds are more precise, and while the stage is reasonably wide, it has low ceilings, failing to give the music enough height to soar.

The frequency mix is pleasantly balanced, with the bass range delivering a deep, rich sound that avoids sounding bloated or overpowering the upper ranges. The lower notes are generally clear and accurate, with only occasional hints of muddiness. While the bass lacks the playful, indulgent bounce we prefer, it more than makes up for it with impressive precision and control.

The midtones are particularly enjoyable, with clean and realistically textured vocals that maintain a natural timbre. Instruments sound robust and well-spaced, and never feel muddled. In Beyoncé's dreamy track “XO”, for instance, a high harmony at the 1:09 mark distinctly swirls in from the right without drowning out the emotional lead vocals.

The high, treble notes are clean, bright, and lively, but they can sound distant and less precise. At times, they almost lag in the mix, seemingly a step behind the lower notes, and lacking the drive they need to stand out. Using the app's adjustable EQ could boost the Air Pro 4 buds' performance if you prefer a more sparkling top end.

Still, the treble and mids work well together. In “Early Mornings” by Koshun Nakao, the spacious stage highlights subtle details throughout this track — the faint rustle of a wooden bench at 0:24 or soft key depressions at 0:48 — over the reflective piano solo wandering by. The piano sounds warm, gentle, and clearly positioned in the mid-distance. While it could benefit from a touch more presence, these earbuds translate the sound nicely.

These buds are capable of getting as loud as you'd like, and there's no sign of distortion even at the highest levels.

To add rigor to our subjective listening, we enlisted our Brüel & Kjaer Type 5128 Head Simulator to map the Air Pro 4 earbuds' frequency response. Compared to our GearLab House Curve, the earbuds closely match the upper mid and lower treble ranges while toning down the lower mid, upper bass, and mid treble frequencies.

EarFun Air Pro 4 Apple AirPods Pro 2

Comfort and Fit

These earbuds strike a good balance between comfort and practicality. Five ear tips allow customization of their lightweight, AirPod-esque design. The streamlined design doesn't extend too deeply into the ear canal, and the long stem with touch controls adds convenience with minimal weight. While they aren't so comfortable that you forget them, they're comfortable enough for about three hours, though they create pressure points for some.

Stability

The EarFun are pretty stable. Multiple ear tips make it easy to get a solid seal and a reliable fit. Whether climbing at the gym, running, or taking a quick nap, these buds stay put. When handling them, the slick, hard plastic exterior can be tricky to grip and scratches easily, but the long stem helps. An IPX5 rating protects them from splashes and a little sweat.

Noise Cancellation

The EarFun Air Pro 4 are equipped with noise cancellation (ANC), but they tend to dull noises rather than block them. Every day sounds, like typing, are muted. Sharp, high-pitched noises, like the clink of a glass or a dog barking, come through more clearly.

The passive noise isolation (blocking the ear canal) works particularly well with high-frequency sounds, and the Air Pro 4 are good at this. Just putting them in your ears does a lot to quiet a noisy cafe.

The EarFun also includes ANC, which uses microphones and processing to cancel incoming sound, and works best on lower tones. The EarFun ANC quiets the low hum of the room, while some higher-pitched sounds of glasses and plates clinking still cut in. Its performance is good enough to put it among the best at this price, and in the middle of the pack overall.

We ranked each earbud's ANC and passive isolation using our experience and testing with Darwin's ears using SoundCheck software. Across most frequencies, the ANC reduces volume levels by 15 to 30 decibels (dB), with a notable peak around 10,000 Hz in the treble range, where it cuts noise by up to 40 decibels. It's not enough to top the best performers, but it's pretty impressive for the price.

These earbuds have an impressive transparency mode called Ambient Sound. This feature records your surroundings and plays them through the internal microphones, helping offset the natural isolation from the earbud seal. While your surroundings can sound slightly unnatural or distorted, it makes it easy to follow conversations and stay aware of what's happening around you.

On the downside, wind can sound jarring in transparency mode. Interestingly, they include a wind noise cancellation mode, but we couldn't tell much difference between that and the regular ANC setting.

Ease of Use

With a slightly over-engineered but useful app, the EarFun Air Pro 4 earbuds work well.

App Features

These earbuds work with Apple and Android devices, and EarFun offers a robust app with an overwhelming number of features. There is a game mode to reduce lag between audio and visuals, manual EQ adjustments, around 30 frequency curve presets, and a wind-specific setting, among others. The app can be challenging with so many features and a subpar interface.

The case features bright interior lights, making it easy to grab them in low-lighting. The LE (low energy) Audio support represents the next generation of Bluetooth connectivity. It enhances audio quality, connection stability, and battery life. The EarFun Air Pro 4 pack a ton of features into an affordable package. A “find my earbuds” feature also plays a chime if you drop one, though it won't help you locate the case if the entire kit goes missing.

Connectivity

The app supports dual device connection, allowing you to switch between two paired devices. The earbuds reliably remember previous pairings even after switching devices.

Battery Life

For battery life, we kept the music playing at 75% volume until they died. Offering a battery life of around 7 hours and 48 minutes on a single charge with the ANC on. While this falls short of the manufacturer's 11-hour claim, it provides enough time for most uses.

The charging case holds up to four full charges. A quick charge feature provides 2 hours of playback from 10 minutes of charging, making it easy to top up on the go. The case also supports wireless charging for an extra layer of convenience.

Call Quality

One of the biggest downsides of the EarFun earbuds is their call quality. Voices sound grainy, and you can hear almost everything in the background. We ran lab tests with Darwin, playing recordings of male and female voices through the speaker in Darwin's mouth, then captured how they sounded through the earbuds.

They performed best in our baseline call quality test, with no background noise, still, only slightly above average. The sound is grainy with a slight echo that gives it a hollow feel, but it is still loud and clear enough to understand without much effort. Moving into an office, your voice still comes through pretty clearly, but so does everything else. Background sounds aren't masked or blocked, so it all blends together, making it hard to hear.

While the voices are understandable, the intense background noise from the subway station challenges them both. The effect is loud and chaotic, making it hard to focus. The competing sounds also seem to exaggerate the grainy texture in the voices, adding to the disorienting feel.

Should You Buy the Bose QuietComfort Ultra?

The EarFun Air Pro 4 earbuds are a great fit for budget-conscious listeners who want a taste of premium features without paying top dollar. They're ideal for casual music lovers, indoor commutes, and office dwellers who want solid sound quality, effective noise cancellation, and lots of customization in a feature-packed app. If you want decent performance, with perks like transparency mode, wireless charging, and multipoint pairing, these earbuds are worth a look.

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