EarFun Air Pro 4 Review

Our EarFun Air Pro 4 Experience

The EarFun Air Pro is compatible with both Apple and Android devices. It supports simultaneous dual device connections, and pairing is easy with charged buds and the pairing button on the case. The earbuds reliably remember previous pairings even after switching devices.

The case is surprisingly small given that the stems protrude horizontally instead of sliding into a crevasse. It features interior lights that illuminate the buds, making them easy to see in low-light conditions. The two sides are labeled R and L sides, though we suspect putting them in incorrectly isn't common. Overall, it feels less refined than more expensive competitors, but it is easy to use, and the lights are a nice touch.

The buds include a robust app with an overwhelming number of features and a subpar interface. It almost feels like it is trying too hard, like a desperate first date who keeps telling you all the hobbies they did in high school and never asks you about yourself. The EarFun also has touch controls that you can customize somewhat in the app. We had trouble with the one-touch volume adjustment being too sensitive, and accidentally changed the volume when adjusting the bud for fit. We didn't turn it off, but you can if it bothers you.

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 we forget them, they're comfortable enough for about three hours, though they created pressure points for some. When handling them, the slick, hard plastic exterior can be tricky to grip and scratches easily, but the long stems help. An IPX5 rating protects them from splashes and a little sweat.

These buds can be as loud as you'd like, and there's no sign of distortion even at the highest levels. While we enjoy listening to them 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 the treble range 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.

The EarFun is equipped with noise cancellation (ANC), but it tends to dull noises rather than block them. Everyday sounds, like typing, are muted. Sharp, high-pitched noises, like clinking glasses or a barking dog, are still easy to hear. However, they performed better than most and were on par or better than the more expensive options. They did an adequate job of reducing sound clutter from our commute and helped us focus at work and at the climbing gym.

Our Analysis and Test Results

Sound Quality

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, seemingly a step behind the lower notes, and lacking the drive 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 sound nicely.

We map the Air Pro 4 earbuds' frequency response and compared it to our GearLab House Curve. The EarFun closely matches the upper mid and lower treble ranges while toning down the lower mid, upper bass, and mid treble frequencies.

Soundstage

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. While the pianist is tickling the ivories to your right, you can tell when the singer takes center stage. While the stage is reasonably wide, it has low ceilings, failing to give the music enough height to soar.

EarFun Air Pro 4 Apple AirPods Pro 2

Comfort and Fit

These earbuds strike a good balance between comfort and practicality. Multiple ear tips make it easy to get a solid seal and a reliable fit. While not as comfortable as some competitors, they are about average for the group, with no significant complaints of discomfort like we saw on some options that were immediately a hard no.

Whether climbing at the gym, running, or taking a quick nap, these buds stay put and are pretty stable. They might require occasional twists or tweaks to keep them solidly placed, but they didn't fall out.

Noise Cancellation

The Air Pro 4 offers good passive noise isolation (blocking the ear canal) of high frequencies. Just putting them in your ears does a lot to quiet a noisy cafe. The EarFun also has active noise cancellation, quieting the room's low hum, while some higher-pitched sounds of plates clinking still cut in. Its performance is good enough to put it among the best at this price.

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 dB. It's not enough to top the best performers, but it's pretty impressive.

These earbuds have an impressive transparency mode called Ambient Sound that records and plays the surroundings through the buds to help maintain awareness. While your surroundings can sound slightly unnatural or distorted, it makes it easy to follow conversations and track what's happening around you. Unfortunately, wind sounds jarring in transparency mode, and the wind noise cancellation mode didn't help much.

App Features

The EarFun Air Pro 4 packs a ton of features into an affordable package. The app is overwhelming with features we suspect most won't bother using, including 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. There is even a “find my earbuds” feature that plays a chime if you drop one, though it won't help you locate the case if the entire kit goes missing.

The EarFun includes LE (low energy) Audio support, the next generation of Bluetooth connectivity. It enhances audio quality, connection stability, and battery life.

Battery Life

Offering a battery life of around 7 hours and 48 minutes on a single charge with the ANC on, these buds fall short of the manufacturer's 11-hour claim, and the average run time in the group, which is closer to 8.5 hours. Depending on how you plan to use your buds, this could mean repeateded downtime in your day waiting for buds to charge.

The charging case holds up to four full charges. A quick 10-minute charge provides two additional hours of listening, 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 most significant downsides of the EarFun earbuds is their call quality. Voices sound grainy, and you can hear almost everything in the background, leading to frustration with not being heard.

They performed best in our baseline calls, with no background noise, but they are only slightly above average. The sound is grainy with a subtle echo that gives it a hollow quality, but it is loud and clear enough to be understood. Moving into an office, voices come through pretty clearly, but so do all the other sounds. Background sounds aren't masked or blocked, so it all blends together, making it muddied and voices harder to decipher.