SoundPEATS Air4

General Information


Size (mm)
Earphones: 18.3*19.1*34.4
Charging Case: 53.5*24*58
Net Weight (g)Single Earbud: 4g
Earbuds+Charger: 38.8g
Package Gross Weight (g)140g
Bluetooth VersionBT5.3
Supported Bluetooth ProfilesHSP/HFP/A2DP/AVRCP
Supported Bluetooth CodecaptX Lossless/aptx adaptive/aptx/AAC/SBC
Battery Capacity35mAh*2 + 330mAh
Charging portType-C
Noise CancellationAdaptive ANC
Control TypeTouch Control
Charge TimeEarbuds ≤1.5H
Charging Case ≤2H
Total Music Play Time at 60% volume (SBC)Earbuds: >6.5H
Charging Case Charging Times3
Total Standby Time>40H
water resistanceIPX4
Charging Input5V/1A
Frequency Response20Hz-20KHz
Driver size13mm
Battery componentsLi-ion Polymer
Mutiple ConnectionYes
One earbuds use?Yes
Auto-turn off function if it is disconnected?3min
Game ModeYes
What's included in package1. Earbuds x 1 pair,Charging Case x 1
2. Charging Cable x 1
3. User Manual x 1
4. App Guide x 1

Latest reviews


100+ Head-Fier
The best got better, but is it better enough?
Pros: Improved ergonomics
Excellent latency
Solid (if slightly boomy) call quality
Outstanding (although at times overly aggressive) noise reduction
Decent audio (with ANC on)
Lots of codec choice
Cons: No mappable controls
No spatial audio
No LE audio (yet)
No in-ear detection sensors
Touch controls still a little over-sensitive
No quick charge
ANC has introduced some difficulties
How I review: (See Previous Reviews)
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Socials: Biolink

Model: SoundPEATS Air4
Price: £52.79 - Amazon UK
Review Reference: RC105

Manufacturer Specification:
  • Brand: SoundPEATS
  • Model: Air4
  • Driver: 13mm Dynamic Driver
  • Chipset: Qualcomm QCC3071
  • Mic: 6 mics with CvC environmental noise reduction for calls
  • ANC: Yes - approx. 20dB
  • Codecs: AAC, SBC, Aptx-Adaptive, Snapdragon Sound
  • App Support: Yes
  • Multipoint: Yes
  • Customisable Controls: No
  • Gaming Mode: Yes
  • Earbud Weight: 4.19g
  • Earbud Dimensions: 33.3mm stem, 18.8mm maximum depth
  • Gross Case & Buds Weight: 38.62g
  • Case Dimensions: 54mm {maximum} (width) x 58mm (height) x 24mm (depth)
  • Case Charge Capacity: 330mAh
  • Quick Charge: No
  • Wireless Charging: No
  • Charge Time: approx. 60 minutes (buds), 90 minutes (buds and case)
  • Single Use Playtime: Up to 6.5 hours
  • Playtime with Charge Case: Up to 26 hours
  • Bluetooth Range: 10m advertised
  • Bluetooth: Bluetooth® 5.3
  • Bluetooth Protocols: BLE/ HFP 1.7/ A2DP 1.3/ AVRCP 1.5
  • Water Resistance: IPX4

1 x Pair Wireless Earbuds
1 x USB Type-C Charge Case
1 x USB Type-C Charge Cable
1 x User Manual

YouTube Review:



After taking the summer off, I've come back to a big pile of the latest and possibly greatest earbuds for 2023, but being a connoisseur of the semi-in-ear style of TWS, I think it's fair to say few were as eagerly anticipated as the SoundPEATS Air4. It's been a busy year for SoundPEATS, with the launch of their sub-brand TrueFree, LDAC re-rubs of their popular models hitting the market, and now the sequel to their esteemed Air3 series in two flavours - the 'Lite', and the regular. Whilst I haven't had chance to check out the Lite yet, I've been testing the Air4 for a good few weeks now, and with semi-in-ear being 'my thing', I've plenty of others on the market to benchmark it against.

Whereas the Lite version mimicked the Capsule3 Pro, Mini Pro HS and others released during 2023 in using the WUQI WQ70XX series chipset, the Air4 has seen SoundPEATS going back to Qualcomm, showcasing the QCC3071chip used previously by Earfun in their disappointing Air Pro 3. Like Earfun, SoundPEATS haven't flexed the full capability of the chip, with LE audio and Google Fast Pair not implemented at this stage. Even so, they've still included some nice features, such as Multipoint connectivity and support for the 'Snapdragon Sound' suite, which includes 'lossless' transmission of up to 44.1kHz/16bit and AptX-voice for wideband voice calls for phones with the Snapdragon 8 processor and above. Most interestingly, they've also decided to implement Active Noise Cancellation, which is dangerous given some will always try to compare the performance with in-ear designs (despite SoundPEATS' protestations otherwise in their marketing material!)

I reviewed the Air3 Deluxe HS a while ago here at Headfi, and have been a huge fan of this range ever since the TrueAir2, but for the first time in the trifecta they've made a notable change to the ergonomics, with the Air4 now more akin to the Apple AirPod 3 than the second generation. Would this somehow scupper SoundPEATS' bid to retain their crown as the best budget Airpod-clone? Read on.....



Since the Air3 Deluxe HS, SoundPEATS have been edging the professionalism and 'premiumness' of their unboxing experience upwards a notch with almost every release, and the Air4 thus follow the Engine4 and Wings2 with a smart outer enclosure that is now punching above the lower-midrange price point at which SoundPEATS typical retail. The SoundPEATS logo and Air4 text have a metallic shimmer, matching the accents on the product itself, and on the back you've got most of the key parameters.

Inside it is the usual fare of SoundPEATS manual and basic USB A-C charge cable. The manual is very good - as always coming in 7 different languages, with text and diagrams used well to convey their simple instructions. You've also got a small booklet telling you how to install and use the SoundPEATS app.

Charge Case


The charge case on the Air4 is instantly recognisable as being from the SoundPEATS stable - it has the matte, mono, two-tone look of the Capsule3 Pro, whilst the green LED resembles that which was used on their bassy in-ear stem release, the SoundPEATS Life. The LED on this case is actually a bit of a disappointment - it's rather dim, difficult to see in well-lit rooms even, but it does the job - letting you know when the case battery is dropping - staying green up until it drops below 50% where it turns amber until you've got below 10%, when it turns red. There's a slightly different percentage alignment when you plug the case in, where amber represents 20-69% whilst charging. You have to say it is pretty weird how they come up with these random numbers, so just follow the colour scheme and you'll be fine, unless you're colour blind....if you are, I don't think I have any answers for you! You've also got a small reset/pairing button on the front, which isn't easy to see here but is much easier to use than the fiddly buttons on the back and side you get with some earbud cases.


I think it would be a stretch to call the case premium-feeling - like most SoundPEATS cases, it's functional, but whether it's built to last the distance is less clear. Even so, it has been in my bag and pocket for the last 4-6 weeks, scratched up with my keys and covered in sun tan lotion on the sunlounger in Rhodes, and unlike the Air3 Case which scuffed up pretty quickly, most of the marks are not really visible. When compared to the Air3 case it is clearly more well-built - the hinge, lid, and general feel to the case are all 'next level up' although admittedly the Air3 case was one of their flimsier efforts.

The hinge to the lid has two positions - open and closed, and there's a hard friction stop at 90 degrees. Open the case and hall-switch mode will immediately trigger the pairing or connection to your last connected device.


In terms of size, SoundPEATS have been increasing the case dimensions steadily since the Air3, but they've also been enhancing battery life too. We've gone from 17 hours on the Air3, to 20 on the Deluxe HS, to up to 26 on the Air4. Just bear in mind if you're using ANC, that will erode a bit quicker. There's no quick charge feature and no wireless charging.



The Air4 are, like the Air3 series before them, a stem-based semi-in-ear design earbud, which are ideal for those who don't like the invasiveness of silicone tips. SoundPEATS are widely recognised as the budget leader in this area due to their ability to tune their drivers to offer punchy basslines without distortion, something the likes of Edifier and 1More haven't successfully been able to achieve.

The touch control area, denoted by the gold accent and SoundPEATS logo, has increased ever-so-slightly in diameter, with the touch sensor remaining the same. This means they aren't quite so prone to accidental touches, but they're still in a bloody awkward place - exactly the position you will inevitably touch if you need to adjust them. You've got pretty much full control from the earbuds, except track back, because as with all SoundPEATS ANC models, holding the left bud for a couple of seconds toggles your ANC mode instead (whereas holding the right bud cycles tracks forward). This isn't a deal breaker for me, but I know others bemoan it.

You do have volume control (single tap) but unfortunately there's no option to customise the touch controls, and with even budget brands like QCY and Baseus now offering at least some customisation, it feels a little disappointing that SoundPEATS aren't even trying to address this.


The Air4, from the outside at least, are hardly an imaginative upgrade, and they still suffer from the problem of having a touch control sensor precisely where you need to adjust them if they start to come loose, but turn the bud around and you see a genuine difference. Firstly, the neck has been slightly elongated - an upgrade which, by itself, isn't going to do much, but when combined with a more targeted, narrower but longer nozzle, this has provided the Air4 with far greater stability than the previous iterations. They now not only pass the shake test, but require little additional readjustment if at all. This added stability makes them much better suited to taking out and about on the daily commute, for example. It's not the most original amendment - Apple did the same when they went from AirPod Gen 2 to Gen 3 - but it is most welcome, and I found the fit much more secure when out walking, although I still probably wouldn't run with them other than a light jog if I'm late for the train.


Otherwise, the only other real differences are cosmetic - the driver shroud is now copper-coloured, to match the accents on the back of the case and the SoundPEATS logo on the touch control area, and the section that sits on your ear is shiny rather than matte, but this doesn't detract from the 'grippiness' in any way. The flat ring around the driver nozzle (as opposed to protruding) is another micro-adjustment that has a very minor comfort benefit, and having brought this to SoundPEATS' attention myself in the past, I'm definitely going to fool myself into thinking someone in R&D read that email and thought - 'yeah, that's what I was thinking Regancipher - I'll change that next time around'!

Stems are still 33mm, charge connectors are still at the base, mics are in the same place, etc - evolution rather than revolution. The buds are IPX4 moisture resistant - as always with SoundPEATS buds, this means sweat and rain are fine, but anything else and you may find yourself invalidating the warranty if they go wrong.

It's possible to use the earbuds in single mode - you get stereo sound through the one channel. The earbuds will automatically shut down after three minutes of inactivity.

Audio & Sound Signature

The Air4, like previous SoundPEATS models, use a large dynamic driver (although it has been reduced from 14.2mm to 13mm) but with the SoC being from Qualcomm, instead of offering LDAC the hi-res codec support comes from the Qualcomm stable - namely aptX Lossless, one of the core tenets of the Snapdragon Sound suite. Lossless isn't strictly lossless here - 16bit/44.1kHz transmission is achieved at between 1,100 - 1200kbps, whereas a CD file is 1,411kbps, but it's very close, and beats the highest performing LDAC transmission of 990kbps.

Regardless of codec, the fundamentals to improving sound are via the drivers and the tuning. It's quite evident very quickly that the resolution and imaging are not really improved at all from previous versions. Despite my phone supporting Snapdragon Sound, I don't feel wowed by the texture or precision like I occasionally am with wired IEM's. I do come to expect this, as semi in-ear and wireless are hardly a killer combination for audiophiles, but it feels like the Air4 are just the Air3 Deluxe HS with a slightly different sound signature, and despite the strides SoundPEATS have made in other areas, I'd have liked to have seen a bit of progression here to truly distinguish between the regular and the Lite and demonstrate some genuine progress.

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One of the problems with the Air3 DHS was the constrained midrange - in particular the upper mids, which could leave vocals sounding a little whispered. Well, on the Air4 they've gone the other way, with a peak and then drop between 1-2k, before a gradual climb up to around 5k which sustains until around 7kHz before a sharp drop. As a result vocals pop out a lot more than on the A3DHS, but it borders on shrill at times, with higher male vocals in particular.

This profile of sound is a little more like the original Air3, and I guess the idea here was to lift the bass a little and contrast that with greater attack to instruments and percussion and crisper vocals. And it kinda works, most of the time, but when it doesn't, you're left with an imbalanced and slightly awkward sound that benefits hugely from some minor, and some major, adjustments.

On 'Something Got Me Started' by Simply Red, the acoustic guitars come through with good harmonics and a warmer tone, and drums also have decent presence and body. The limitations are more evident when the vocals come in - Mick Hucknall hits as high as B4 in this track, and when he does it's just a bit too overpowering. With the woodwind instruments set too far back, you get an excessively sharp, bordering on shrill impact, which very quickly becomes fatiguing. A deeper voice - Curt Smith from Tears for Fears, for example, sounds much more balanced, and if you like opera, tenors are also better represented.

Female vocals on the other hand pop - Katy Perry on 'California Gurls' has great clarity, and the lisps and gasps in Cecilia Krull's 'My Life Is Going On' translate well to the representation. 'Side to Side' by Ariana Grande in particular sounds great - it's not too complicated in terms of arrangement and it plays well to the Air4's strengths, with Ariana's vocal taking centre stage, the bassline coming through quite thick and lots of texture to the percussion.

On a more simple house track like 'Wombass' by Oliver Heldens, the combination works arguably even better - bass is fast, subbass is resonant, midbass is more balanced than the Air3 DHS and the kick drum has body, weight and punch. The coarse trebles work well, giving the illusion of detail as shakers come to the fore, and percussion sounds crispy - but it's on these type of tracks where the Air4, like the original Air3, are by some distance at their most comfortable - introduce complexity into the arrangement and they aren't anywhere near at home. The trebles in particular struggle with separation where you have a variety of clashes, cymbals and other percussive elements, and even on their own can at times sound a shade artificial in terms of their texture.

If you found the Air3 DHS too big a side-step from the rawer-sounding Air3, you'll probably welcome the return to this more energetic sound signature, and despite a just satisfactory staging, they are still a pretty enjoyable listen and can be fine-tuned with the EQ to bring a more natural sound to vocals. Of the presets, 'Pop' is almost a half-way house between the Air3 DHS and Air4, taking a little of the harshness out of trebles and upper mids - for more longevity and less fatigue, give this preset a try. If you're a basshead, maybe try bass boost - the lower frequencies can sound a bit bloated depending on what you're listening to, but this preset also rolls off the harshness of the higher frequencies, whilst retaining energy and drive.

You could also try my custom EQ: 1, -1, -1, -1, 0, 1, 2, -3, -1, 0. It isn't as energetic as SoundPEATS Classic, but it's more balanced and, IMO, makes them a far more palatable listen across each genre, taking the inconsistencies out of the treble and trimming the fat out of the bass.


And by the way, all of these observations are with ANC on - without ANC they are simply unusable. Even with the 'Bass Boost' preset activated, there's simply nowhere near enough depth to the sound. This obviously has implications on the battery life, as we will come to shortly.....

Active Noise Cancellation

Now being late to the party on this review, I've had chance to watch and read some other reviews especially on the ANC, and it doesn't cease to amaze me how many are disappointed by the performance. What exactly are you expecting?! Semi-in-ear style earbuds don't have a seal, and it's the seal which contributes the most in typical ANC buds, especially with the middle and higher frequency environmental sounds. So already, the Air4 are at a huge disadvantage due to their design. And yet, despite this, you can still hear the ANC kicking in immediately, as soon as you put the buds in your ears.

I tested them in a variety of environments - even on a plane, and whilst they aren't ever going to match the effect you get on an IEM-shaped bud, to dismiss it as 'non-existent' is harsh to say the least. If you're expecting them to negate voices or screaming kids, think again - it just isn't going to happen. However, if you're out and about or at home doing work and you get bothered by lower frequency sounds - the sound of engines, aircon or computer fans, then you'll notice these are subdued completely. Subdue is probably the best word to describe ANC - noises aren't cancelled, but they can make your environment much more comfortable, and having experienced this conundrum previously with the Samsung Galaxy Buds Live, I can honestly say the Air4 are miles ahead of those, for me, with my fit, at least. I've heard of other semi-in-ear models having this feature now - such as Huawei FreeBuds 5 and Edifier W320TN, so it will be an interesting comparison to see how they fare in relation to those models.

In case you were wondering - there's no selectable ambient mode, because there's no seal, so ANC off is the equivalent to your typical passthrough with ANC in-ears.

Call Quality

The Air4 boast 6 mics, which work harmoniously to facilitate the cVc noise reduction native to the Qualcomm chipset. As you'll see in the YouTube review, I tested the Air4 in a bunch of different real life environments - including a commuter train, a busy coffee shop, and outdoors on a windy day. After some initial problems with the mic not activating, the air4 settled down into a solid call performance. The Air4 are, in particular, first-class at negating background noise - only a very strong gust of wind was clearly heard out of all of those scenarios, and you can quite clearly see a couple conversing right next to me on the coffee shop scene, with none of that being relayed through the Air4.

The only drawback is on particularly busy indoor scenes, where your voice can soften a little, and with the boomy nature of the mids already making your voice sound quite bassy, it can leave you a little less coherent than you would like. Even so, it's a huge upgrade from the Air3, a tangible improvement from the Air3 DHS, and probably the best semi-in-ear performer alongside the Edifier W220T.


The Air4 have a host of codecs - AptX-Lossless, AptX-Adaptive, AptX, AAC & SBC. This makes them a great choice if you own a Snapdragon-based Android phone in particular, but if you own a Google Pixel or older phone, you'll still benefit from the presence of AptX. If you're lucky enough to have a newer Snapdragon phone, you'll benefit from superb latency. With gaming mode activated, the Air4 perform well on casual games, only falling a shade short on first-person shooters. Along with the Air3 Pro, this is SoundPEATS' best gaming performance so far.

Multipoint is adequate. It's a bit of a faff to set it up (you need to disconnect from your primary device, then connect to the secondary, then reconnect to the primary) and to initiate you need to pause the primary device and the secondary device plays a second or two later. However, if you then pause the secondary device, playback does not resume on the primary device - I found I had to disconnect and reconnect again. There's no ability to see which devices are connected in the app, unlike the Realme/Oppo/OnePlus range, which is a shame - you may find yourself (like I did) hearing the 'Connected' voice prompt twice and wondering what else you're connected to.

There's no quick charge, no wireless charging, no in-ear detection (unlike the Air3) and no spatial audio, which we've started to see creep into even budget models recently (albeit badly) such as Oppo Enco Air3.

The SoundPEATS app is one we've discussed many times before, and having prioritised stability over features, is reasonably mature albeit a bit lacking. Adaptive EQ is back (and again, didn't really work for me). In case you haven't seen it, it's similar to Soundcore's 'Hear ID', with tones generated at different frequencies, requiring you to tap the screen when you hear something. At the end, you get a hearing curve customised to your hearing, but the reality is less exciting - stick to the equalisers and custom EQ.

The custom EQ section is very useful, with ten bands. It isn't parametric, but it does seem to give you the most customisation at the points where you probably need it the most. If you're on Android, you always have Wavelet to fall back on if you don't want to use the app.

The app also gives you the ability to toggle ANC and gaming mode, and you can also switch off touch controls altogether.

Bluetooth version is 5.3, and when connected to my Sony Xperia 1 IV I got an impressive 15m line of sight - a strong connection performance. Outdoors, even in congested areas, the Air4 seemingly prioritise connection, dropping the quality as opposed to intermittent dropouts when you try and push them to their distance limits.

Battery Life

Some comparisons (advertised):

TrueFree T3 - 7 hours / 28 hours
Tronsmart Onyx Ace Pro - 6.5 hours / 27 hours
SoundPEATS Air4 - (up to) 6.5 hours / 26 hours
FIIL CC2 - 5 hours / 27 hours
SoundPEATS TrueAir2+ - 5 hours / 25 hours
Haylou Moripods - 5 hours / 25 hours
Tronsmart Battle - 5 hours / 25 hours
1More Comfobuds 2 - 6 hours / 24 hours
FIIL KEY - 5 hours / 24 hours
SoundPEATS Air3 Deluxe - 5 hours / 22 hours
QCY T20 - 5.5 hours / 20 hours
SoundPEATS Air3 Deluxe HS - 5 hours / 20 hours
QCY T12 - 4 hours / 20 hours
TaoTronics SoundLiberty 80 - 4 hours / 20 hours
SoundPEATS Air3 - 5 hours / 17.5 hours

Battery life on the Air4 is, on the face of it, very strong - up to 4.5 hours with ANC on, and 6.5 hours with ANC off, with 20 additional hours from the case puts them some way ahead of the Air3 and Air3 DHS. However, in reality, you're not going to use these without ANC on due to the dearth of lower frequency in the sound signature. With ANC on, my readings varied between 4 hours 4 minutes and 4 hours 19 minutes, using aptX-adaptive, 60% volume and taking the odd call. With ANC off, again I got around the advertised, with 5 hours 52 being my shortest and 6 hours 17 minutes being my longest. Semi-in-ear buds have always struggled with battery life, I suspect due to the larger drivers.


Let's start with the positives. SoundPEATS have basically done exactly what I said they would do in the comments of my review of the Air3 DHS - offer options for different consumers of different primary source devices. The Air4 and Air4 Lite show they aren't afraid to try to cater for everyone. Using the Qualcomm chips - not cheap - is a bold move that benefits in particular Snapdragon-based device owners, and they've integrated some nice features, like multipoint connectivity, lots of codecs and a subtle ANC that is an added bonus for seasoned semi-in-ear connoisseurs. Call Quality is amongst the best in class, and the superb latency performance will be a big benefit to casual gamers.

The problems that ANC has brought, however - diminished battery life and a sound signature that simply isn't viable without it activated, not to mention the inconsistencies in the tuning this has inadvertently introduced, might leave the market wondering if it was really worth it. For me, I think it's a bold and justified experiment, but a big part of me is left wondering what might have been - SoundPEATS still haven't bottomed out ensuring all of the fundamentals are met in the design brief, and an earbud in 2023 without quick charge, in-ear detection and mappable controls feels like SoundPEATS may lose ground with the competition if they aren't careful, in trying to be a little too extravagant.

The sound is good by semi-in-ear standards with a decent weight to lower frequencies when ANC is on. With some adjustments on the EQ, you can get the sound signature to a quite nice state, but it didn't seem that long ago that SoundPEATS were miles ahead of the competition here, and now....well, they are still probably the pick of the budget options, but the gap is closing. By downgrading the driver size and focusing most of the energy into features with this release, it feels a bit like SoundPEATS have accepted critical listening isn't for semi-in-ear wireless buds.....and you can see the logic in that, but it would surely be dangerous to relinquish their lofty position at the top of the budget tree without a fight?!

Despite my protestations, it's still hard to argue against the Air4 once again capturing the hearts and wallets of the budget semi-in-ear crowd - but next time around I'd love to see the evolution improving the audio even more, and adding some of those fundamentals we've been banging on about like Quick Charge and mappable controls.

SoundPEATS Review Inventory:

SoundPEATS Engine4
SoundPEATS RunFree Lite
SoundPEATS Life Classic
SoundPEATS Opera05
SoundPEATS Capsule3 Pro
SoundPEATS Mini Pro HS
SoundPEATS Air3 Deluxe HS
SoundPEATS Air3 Pro
SoundPEATS Mini Pro
SoundPEATS Mini
SoundPEATS Air3
SoundPEATS TrueAir2+
SoundPEATS TrueAir 2
SoundPEATS Sonic

About SoundPEATS:

SoundPEATS seem to have become an overnight sensation, wiping up a large portion of budget TWS earbud market share with a business model that has served them (and Anker before them) exceptionally well - good distribution channels (via Amazon), good support, a catchy name and product that performs well at a very competitive price point. In reality, they have been around a long time - whilst Shenzhen SoundSOUL IT Co LTD is a different trading name to Ginto E-Commerce, they share the same business address (including room number) as them - you may know their brand name better as Dudios. With Dudios not sounding quite so cool as Soundpeats, maybe the brand transition has been instrumental in their success, but having been around since 2010 and patents in Bluetooth tech stretching back to 2015, they are not the plucky upstarts that some may think - they know their stuff, have a great network of contacts, and now a very solid brand in Europe, and deservedly so.

The thing that sets SoundPEATS apart from other vendors, and makes them my favourite budget earbud vendor, is that they are completely transparent over their components. Whether they use Realtek, Qualcomm or Airoha chips in their buds, they are totally open about it, and as a reviewer this really helps, because whilst I have, and do, dismantle buds to check the way that certain things have been implemented (such as the power management, mems mics, etc) and I really don't like having to do it with every set of earbuds, because they then become unusable.
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Already using Air3 for more than 6 months, I'll wait for Air5 instead, right?


100+ Head-Fier
Soundpeats Air4 Review
Pros: Fun V shaped sound
App compatibility
Various BT codecs available
Good battery life
Cons: ANC performance largely depending on the fit (nit picking)

General Info/Build/Comfort/Packaging
Soundpeats is a reputable company which produces high performance as well as cost effective TWS earbuds. I have reviewed several Soundpeats products over the past few months and I have positive experience towards the products in general. I have the Air4 today which is a successor of Air3 Deluxe HS i believe.

Build quality is very solid, the TWS itself is very light and I don't feel any weight on my ears when I'm using the Air4. Air4 is not an in ear TWS, it is half in ear design which is similar to the widely popular Apple’s Airpod, hence do not expect good isolation, but but but, what’s different from the Air3 and Air4 is the addition of adaptive ANC.
Packaging itself is rather straightforward, a charging cable, the charging case and the TWS itself. Minimal and straightforward.
As for comfort, Air4 fits well on my ears, I have no issues with the fitting and the weight itself is very light, they literally disappear on your ear when you are wearing them.


Size (mm)
Earphones: 18.3*19.1*34.4
Charging Case: 53.5*24*58
Net Weight (g)Single Earbud: 4g
Earbuds+Charger: 38.8g
Package Gross Weight (g)140g
Bluetooth VersionBT5.3
Supported Bluetooth ProfilesHSP/HFP/A2DP/AVRCP
Supported Bluetooth CodecaptX Lossless/aptx adaptive/aptx/AAC/SBC
Battery Capacity35mAh*2 + 330mAh
Charging portType-C
Noise CancellationAdaptive ANC
Control TypeTouch Control
Charge TimeEarbuds ≤1.5H
Charging Case ≤2H
Total Music Play Time at 60% volume (SBC)Earbuds: >6.5H
Charging Case Charging Times3
Total Standby Time>40H
water resistanceIPX4
Charging Input5V/1A
Frequency Response20Hz-20KHz
Driver size13mm
Battery componentsLi-ion Polymer
Mutiple ConnectionYes
One earbuds use?Yes
Auto-turn off function if it is disconnected?3min
Game ModeYes
What's included in package1. Earbuds x 1 pair,Charging Case x 1
2. Charging Cable x 1
3. User Manual x 1
4. App Guide x 1

Battery Life
  • The battery life of Air4 while playing music with aptx codec is approximately 6 hours+- with the volume level at 50%, via my Google Pixel 5
  • The battery life is quite fair and recharging is fast via the charging case, hence not really an issue in terms of the battery life
  • aptX Lossless/aptx adaptive/aptx/AAC/SBC are supported and i’m mainly using aptx with Pixel 5 due to it only supports aptx and not the aptx adaptive and AAC with my iPhone 12 Mini
  • Pixel 5 uses Bluetooth version 5.0 while Air4 supports up to 5.3 , despite connected to a Bluetooth 5.0 device, the connection remained solid without any dropouts
  • However, i do notice a slight interference or stuttering when i’m out in the public, not sure if this is something to do with my device itself or it is due to the RF interference, but after disconnecting and reconnecting it, the issue seems to go away
App Functionality
  • Air4 is compatible with Soundpeats app
  • The app offers the functionality to change the EQ, either preset EQs or your own customisation
  • It also supports adaptive EQ, which the app will play some tones at various frequencies and you will determine if you’re able to hear them or not, then the app will generate a curve which will serve as the compensation to your hearing via the EQ
  • You are also able to cycle through ANC on or Off (Normal mode)
  • Firmware upgrade of the Air4 is also possible via the app itself
  • The app also offers the overview of battery life on both the L and R earbuds as well as to toggle game mode on or off


Sound Impression (Based on default EQ preset Soundpeats Classic)
Air4 sound tuning is tilting towards V-Shaped to my ears. Bass and the treble is boosted whereas the mids are a little recessed. In terms of timbre, they are not too bad being a dynamic driver, but it's not the most accurate timbre either, nonetheless, this TWS is not meant for critical listening anyway, so the expectation has to be right

  • Bass is certainly being emphasised here, sub bass rumbles whenever the track calls for it
  • Mid bass has good punch to it, it is very pleasant and fun to listen to overall
  • Bass has good texture and in terms of speed, it is doing quite well as it handled Slipknot’s People = crap! effortlessly without sounding muddy
  • Mids are not as forward as the bass, it does sound a little recessed but not to the point where it is bad
  • Male vocal sounded slightly recessed whereas female vocal sounds a little forward
  • Male vocal has good texture whereas female vocal does sound a little thin sometimes
  • Treble on the Air4 is smooth with a little energy, but not overly bright or offensive
  • It has good amount of air so it doesn’t really sound very congested
  • Soundstage is not overly wide nor tall, average in my opinion
  • Imaging is average in my opinion, it does well on normal track but during complex track where many instruments are playing at the same time
  • with all that aside, considering the price point, it is actually pretty good
Noise Cancellation Performance
  • ANC performance is hit or miss as it largely depending on the seal, being a half in ear, getting a good seal is crucial in order for the ANC to work properly
  • With a good seal, some low frequency noise is being cancelled, however, when i’m typing with my mechanical keyboard, the sound is still very much noticeable
  • It does cancel out some minor noise such as engine noise when i’m out and about
  • Consider the ANC a bonus and one should not have high expectation for it


Final Thoughts
Air4 is a very solid TWS overall. If I were to score it from an audiophile’s perspective, it would be a 3.5 out of 5. If I were to rate it based on the general consumer’s perspective, it will be an easy 4.5 out of 5. The reason why is because the sound of Air4 is tilting towards the preference of general consumer, an as a general consumer, the sound coming from Air4 is very easily likeable, whereas for audiophile, the demand and preference is slightly different in terms of sound preference, critical listening capability and technical performance (in terms of audio’s technical performance). Nonetheless, I find myself enjoying Air4 when I'm out and about. Even when I'm riding my mountain bike on the trail, the semi open design allows me to hear my surroundings and not be completely sealed off. Let's be real, who listens critically when they’re out and about?

*Big thanks to Ellen from Soundpeats for sending the Air4 over for the purpose of this review, All thoughts are of my own.

Air4 will be launching in Amazon on the 22nd Aug.
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Great detailed review. They look like a great half ear tws.
Bought Air 3 about half year ago, should i upgrade to this one?


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