EarFun Air Pro 4+ Earphones Review: The Perfect Upgrade

Can the budget true wireless earphones market get even more competitive than it already is? Well, the answer is yes, now that EarFun is back with another update to their popular Air Pro line.

The EarFun Air Pro 4+ earphones take the already excellent Air Pro 4 and make a genuine leap forward in one important area: sound quality. That new dual-driver hybrid setup isn’t just marketing talk – it actually delivers audio that punches well above its price point.

Battery life has been bumped up slightly, the app’s custom EQ hearing test genuinely works, and you’re still getting all the features you’d expect from earphones costing twice as much.

But it’s not all good news. The Active Noise Cancelling hasn’t improved (though it’s still decent for the price), the new vertical charging case is more fiddly than the old design, and the app’s ANC options have somehow become even more confusing.

So are these worth your money – and should Air Pro 4 owners bother upgrading? Read on for the full lowdown…

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Who Are The EarFun Air Pro 4+ Earphones For?

EarFun has been on quite a roll in recent years, churning out new earphone models at an impressive pace. It feels like every few months, another iteration lands on my desk that somehow improves on what came before.

The Air Pro 4+ arrives less than a year after the Air Pro 4 (see my review), which might have you wondering about the naming choice. Why not just call it the Air Pro 5?

I asked EarFun about this, and they told me they “decided to go with Air Pro 4+ instead of Air Pro 5 because it’s an enhanced version of the Air Pro 4, focusing on refined performance and user experience rather than a completely new generation.”

Fair enough. When you look at what’s actually changed, it makes sense. The design is similar, and most of the features carry over.

The real upgrades are happening under the hood – particularly with that new dual-driver hybrid setup.

EarFun has always been good at packing in features you’d normally expect from models costing twice as much. The Air Pro 4+ keeps up that tradition, but this time, they’ve really outdone themselves on the sound quality front.

I mean it – these genuinely sound brilliant. Better than some earbuds I’ve tested that cost significantly more.

Now, I’m not saying you’re getting the meticulously tuned sound of £600 flagship earbuds. Let’s be realistic about what £89.99 can deliver. But if you’re after excellent audio, solid ANC, and a comprehensive feature list without spending a fortune, the Air Pro 4+ deserve serious consideration.

Using The EarFun Air Pro 4+

Size And Comfort

The Air Pro 4+ stick with the stem-style design that’s become EarFun’s signature look (on the Air models), and they’re still rocking that glossy finish that gives them a more premium feel than their price tag (and plastic) suggests.

The earbuds themselves are virtually identical to the Air Pro 4 in terms of size and weight. They nestle comfortably in the ear, and I’ve had no issues wearing them for several hours at a stretch during my month of testing.

As with the previous model, you get five ear tip sizes in the box, which should make it easy for most people to find their perfect fit. The in-ear seal remains excellent, which helps with both comfort and noise cancellation.

The earbuds maintain their IPX5 water and sweat resistance rating – though this has been upgraded to IP55, adding dust resistance to the mix. So they’re still perfectly fine for rainy days or sweaty workouts, but you’ll want to avoid dunking them in water.

The biggest change is the case itself. EarFun has switched to a vertical design, and I’ll be honest – it’s a bit of a mixed bag. It looks unique and modern, sure, but actually getting the earbuds in and out is more fiddly than before.

The problem is the placement. It’s hard to remove them (or put them back in) without accidentally pressing one of the touch-sensitive areas on the stems. I found myself triggering controls more than once while just trying to pop them in the case.

I preferred the old horizontal case design, and this feels a bit like change for change’s sake. That said, it’s not a deal breaker – you get used to it after a few days.

The case still supports wireless charging alongside the USB-C port, which is a nice convenience to have.

Pairing And Controlling The EarFun Air Pro 4+

Pairing the Air Pro 4+ with your phone is just as seamless as before – they go straight into pairing mode the moment you first open the case. Android users get the added bonus of Google Fast Pair support, which makes the initial setup even quicker.

Once paired, reconnecting to the same device is nearly instant – something I particularly appreciate when incoming calls start ringing.

Thanks to the upgraded Bluetooth 6.0, the connection is rock-solid. During my month of testing, I haven’t had a single disconnection or dropout, even in crowded areas where Bluetooth signals usually struggle.

Controlling the earphones is straightforward, with the touch-sensitive areas on the stems responding well to taps and long-presses. The usual controls are there for volume, playback, and switching between ANC modes.

And as always, you can customise these via the EarFun app if the defaults don’t suit you.

Speaking of the app, it’s still a tweaker’s paradise. You can switch ANC modes, customise controls, enable or disable nearly every feature, and fine-tune the EQ to your heart’s content.

One feature I was initially sceptical about is the custom EQ hearing test. The app plays a series of tones in both ears, you mark what you can and can’t hear, and it creates a personalised EQ profile based on your results.

I’ll admit, I thought it would be a gimmick. But it genuinely improved the sound quality for me – and I didn’t have to faff about with EQ sliders trying to get things just right.

The default, out-of-the-box treble was a bit too sharp for my liking, but the custom preset sorted that out without sacrificing the bass response.

As with the Air Pro 4, EarFun has been actively updating the firmware. During my testing period alone, there were already two updates with bug fixes and feature improvements. It’s reassuring to see ongoing support rather than a “ship it and forget it” approach.

The ‘Find Your Earphones’ feature is still there if you need to locate them under the sofa cushions, and in-ear detection makes a return – pull one earbud out and your music pauses automatically. Pop it back in, and it resumes.

EarFun Air Pro 4+ Audio Quality

The Air Pro 4+ represent a proper step up in the audio department, starting with the move to a dual-driver hybrid setup.

You’re getting a 10mm dynamic driver paired with EarFun’s “FeatherBA” balanced armature – their proprietary design that’s apparently the world’s smallest self-developed BA driver.

This is a significant upgrade from the Air Pro 4’s single 10mm composite dynamic driver, and it’s not just specs on paper.

On the codec front, all the acronyms and letters are present – there’s support for aptX Lossless, aptX Adaptive, LDAC, AAC, and SBC. Bluetooth 6.0 brings LE Audio and Auracast into the mix as well, along with Snapdragon Sound certification. The earbuds are also Hi-Res Audio certified.

iPhone users will still be limited to AAC, but Android users with compatible devices have access to some seriously high-quality audio options. The ultra-low latency mode (under 50ms) is there if you need it for gaming or watching videos (though I had no lip-sync issues at all when streaming video, even without the latency mode).

Now, EarFun has been pushing out new models at quite a clip – sometimes twice a year. With that pace, it often feels like the focus is on adding new features, with sound quality only taking tiny incremental steps forward.

That’s why the jump here genuinely surprised me. EarFun has pulled off something special with the Air Pro 4+.

There’s a real, noticeable improvement compared to the Air Pro 4, and these hold their own against other earphones not just in the same price bracket, but above it as well.

The balance feels spot-on. Bass has proper depth without overwhelming the mids, and the treble is detailed without getting harsh. They hold up brilliantly whether you’re listening quietly or cranking the volume up, which is surprisingly rare for earbuds at this price.

I put them through their paces with a few tracks I know well.

“Take On Me” by a-ha was first up. The mix pops the way it should. The synths shimmer, the drums snap, and the vocal stays right where you want it – bright and present without getting sharp. It almost feels like hearing the song fresh again.

Next came “As It Was” by Harry Styles. Warm, clean, and punchy. The bass moves but never swallows the track, and there’s still plenty of air around the vocal. Even at low volume, everything sits nicely, which says a lot about how well these are tuned.

Honestly, I didn’t expect them to sound this good. The balance between bass and clarity feels just right, and that holds true across different genres and volume levels.

Combined with the comfortable fit and long battery life, these are earbuds you can happily wear for hours on end without fatigue – whether you’re working through the day or getting lost in a lengthy playlist.

Active Noise Cancellation

The ANC on the Air Pro 4+ is… fine. It’s practically the same as what you got with the Air Pro 4, which was already very similar to the Air Pro 3. You get the point.

While the audio quality keeps improving with each iteration, the ANC seems to be stuck in place. I suppose there’s only so much you can do at certain price points – though it’s worth noting that the Air Pro 4+ still outperform some more expensive pairs I’ve tested, where ANC clearly wasn’t a priority.

They do well with constant background hum – the kind you get on trains or planes. They’ll also quiet down conversations around you to a degree.

But whether they can actually remove traffic noise or keyboard tapping depends largely on how loud the music you’re listening to is.

In true EarFun fashion, the ANC options in the app have become even MORE confusing than last time. There’s Ambient, Off, and Noise Cancelling as your main modes.

But then within Noise Cancelling, you can switch between “AI Ear Adaptive ANC”, “AI Environment Adaptive ANC”, and “Manual Adjustment” where you slide a bar between levels. Oh, and there’s “Wind Noise Cancelling” too – which isn’t grouped with the others but sits as a separate mode entirely.

Frankly, I have no idea what any of these actually do. And more importantly, when I switched between them during my testing, I could hardly notice any difference.

Maybe they behave differently in very specific situations or locations, but in my day-to-day usage, they were all practically the same. So I just stuck with the default option and stopped thinking about it.

When it comes to phone calls, the Air Pro 4+ have the same issue I encountered with the Air Pro 4. The 6-mic system with cVc 8.0 and AI processing can get a bit TOO sensitive.

EarFun’s AI – yes, the earphones now use AI – sometimes latches onto the wrong sounds to amplify. The person on the other end might hear you moving a spoon around the room far louder than they should.

Your voice still comes through clear enough in most situations, but be aware that background sounds might get more attention than you’d like.

EarFun Air Pro 4+ Battery Times

The Air Pro 4 already had impressive battery life, so there wasn’t much room for improvement – but EarFun has managed to push things even further.

You’re now looking at up to 12 hours on a single charge without ANC, and 8 hours with ANC on. That’s a proper bump from the Air Pro 4’s 11 and 7.5 hours respectively.

Factor in the additional charge from the case, and you’re looking at a total of up to 54 hours without ANC, and 36 hours with ANC on. That’s up from 52 and 35 hours on the previous model.

To put that into perspective, you could theoretically listen to music for more than two full days before needing to plug in the case. And indeed, during my weeks of testing, I’ve only had to charge the case a handful of times despite using these earphones daily.

That’s genuinely impressive staying power, especially given the size and weight of these things.

As always, your actual battery life will vary depending on volume levels, which audio codec you’re using, and the distance between the earbuds and your device.

But even accounting for real-world usage, these will easily last you through a full week of commuting.

The case charges via USB-C or wirelessly (though wireless charging takes longer – 2 hours via USB-C versus 3.5 hours wirelessly). The earbuds themselves take about an hour to fully charge, and the Quick Charge feature remains – a quick top-up will get you back up and running in no time when you’ve forgotten to charge before heading out.

Bottom Line: Are The EarFun Air Pro 4+ Earphones Worth It?

EarFun has really nailed it with the Air Pro 4 Plus. The jump in audio quality is the real story here – that dual-driver setup isn’t just marketing fluff, it genuinely delivers.

If you’ve already got the Air Pro 4, should you rush out for an upgrade? Probably not. These are genuinely better in terms of sound quality, but the Air Pro 4 should be good enough to last you another generation or two.

But if you’re in the market for new earphones and weighing up your options, the Air Pro 4+ are among the most impressive I’ve tested at this price level – and some levels above it, frankly. They feel like the culmination of EarFun’s yearly refinement process, bringing together everything they’ve learned over the past few years.

It’s a shame the ANC hasn’t made the same leap forward, and the new vertical case feels more gimmicky than genuinely useful. But if audio quality is your number one consideration, these offer amazing value for money.

At £89.99 (and usually less with discounts), you’re getting sound quality that rivals earbuds costing significantly more, excellent battery life, and a comprehensive feature set. That’s hard to argue with.

Note: The earphones were supplied by the manufacturer for this review. As always, this did not influence my unbiased opinion of the product.