EarFun Air Pro 4 Review

August 6, 2024 4:38 pm

EarFun’s Air Pro line is a highlight of the budget true wireless market. Their latest is a continuation of that line, keeping to its inexpensive roots and adding tons of new features. For eighty dollars, the Air Pro 4 sure promises a lot, so let’s see if EarFun can deliver.

What You Get

Air Pro 4 earbuds
Charging case
USB-C charging cable
XS/S/M/L//XL ear tips
User manual

Look & Feel

In terms of appearance, the Air Pro 4 is pretty standard. It’s a stemmed design that resembles the previous design quite a bit. I’m only talking about the black version here, but there’s also a white-silver version that is more flashy and stylish. For what they are though, the simple design is welcome, especially when the fit is so secure and comfortable to wear for many hours.

Design & Functionality

The Air Pro 4 uses 10mm dynamic drivers with composite diaphragms. It uses a series of 6 microphones for calls and ANC backed by an AI algorithm that suppresses all types of noise. This leads to the Air Pro 4’s noise-canceling, which is by far the best you can get for a hundred dollars. I don’t think there are even over-ear headphones that have this good ANC for the price.

The app is home to a few other features like game mode, which reduces audio latency, customizable touch controls, LE Audio activation, and even a headphone finder where you can play a loud sound that will help you locate the Air Pro 4 if they’re missing. You can even switch between the left and right microphone to be fixed to one side.

EQ is one of the more notable features, and the EarFun app has a good one. I mainly used the custom EQ, but there is also a hearing test that will make you your own custom sound profile. This is a parametric EQ that you can’t adjust the Q size of, so it acts more as a graphic EQ. You get 10 different nodes representing the frequency spectrum, which is more than a lot of wireless headphone companion apps give you. There is also an assortment of presets that are fun to cycle through if you don’t feel like messing around with the nodes. They all make enough of a change to the sound to feel distinct.

Noise Canceling

There are five different modes of ANC, strong, balanced, environment, adaptive AI, and wind noise cancelation. Obviously, strong ANC brings out the most potential isolation, and it’s extremely effective. Only the highest frequency environmental noise can be perceived, and even then it’s super muddled. Everything else is almost completely silent aside from human voices. The AI adaptive ANC worked in a similar way in my environment, and the app also offers balanced ANC if you’re looking for something less drastic and more concentrated on comfortable isolation.

Bluetooth

The Air Pro 4 is surprisingly advanced for eighty-dollar true wireless earbuds in terms of Bluetooth. It’s built with a QCC3091 Soc from Qualcomm which offers Bluetooth version 5.4. With it, comes LE Audio integration from the latest LC3 audio CODEC. This also allows for Auracast compatibility. LDAC, and aptX adaptive CODECs are also supported. EarFun claims that their aptX Adaptive CODEC is lossless, and suppliedaudio data transmission of up to 24-bit/96kHz.

Battery Life

Seven and a half hours with ANC active is really good for eighty dollars. With noise-canceling turned off, you should get nearly eleven hours from a single charge, adding up to fifty-two hours off multiple charges from the case.

Soundstage

Seeing the price, and hearing how wide and full the Air Pro 4 appears in its soundstage is very exciting. It’s quite impressive with its channel balance, clearly identifying left and right sound elements for an immersive stereo presentation. Some natural height is also shown, especially when using the EQ regularly and boosting upper-mids and treble. Everything exists in an interior headspace, but the Air Pro 4 takes advantage of this space well. The sound consumes a ton of surface area, wrapping around and engulfing your head in layers of instruments and vocals. This is a lot for a pair of eighty-dollar true wireless earbuds to accomplish, and they consistently feel fresh.

Low End

In its default form, the bass is highly enjoyable. Its tone only expands with EQ, but its natural tuning still brings a solid foundation to the sound signature. It has a clear body that sits evenly with the low mids as a natural part of the frequency response. Without EQ the timbre is a bit plain, feeling more like a well of tone rather than a full bass. However, using the EQ, whether it be with presents or custom controls, adds more weight to the lows. You get tons of thump from the three simple bass boosts, which already gave me enough of an impression. The Dance, Electronic, and Rock presets also do a good job of showcasing a more theatrical slam. It becomes a bass response with a lot of personality once you get it to sit in the right place.

Mids

These mids are all about what is reduced and brought forward with EQ. Out of the box, the mids appear more expressive than what you’re used to hearing over true wireless earbuds, especially for eighty dollars. What’s holding the mids back the most is space. A lot of instruments tend to feel squished together, and the EQ decides which regions to push forward and back. The mids get seriously impressive in the upper mids though. There’s a snap to the performances that feels more detailed than you expect, highlighting vocals and instruments with a satisfying sheen of texture.

Highs

I enjoyed the high-end response quite a bit. EQ helps make the details slightly brighter, but you’ll never hear the Air Pro 4 approach harsh territory. The highs feature a consistent tick and ring that always adds to the personality of each performance. EQ allows you to control how crisp the treble is, how much height is allowed, and how much the sound elements are underlined. There isn’t a ton of presence or control in the upper highs though, which makes them quite linear.

Summary

The EarFun Air Pro 4 is packed to the brim with sound quality and features that raise it above and beyond its generous asking price. Its variety of presets and custom EQ options bring a ton of personalization on top of the earbud’s already finely tuned sound signature. This is also one of the best uses of ANC I’ve heard over true wireless that isn’t named the Sony WF-1000XM5. On top of that is one of the best companion apps you can get for true wireless earbuds, as it offers tons of features that most brands don’t offer. If you’re not committed to purchasing the top-tier true wireless earphones out there, look no further than the Air Pro 4.