Edifier Stax Spirit S10 review: fantastic-sounding earbuds with a few issues in the feature set

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Edifier Stax Spirit S10: Two-minute review

Since I started testing the Edifier Stax Spirit S10, I’ve dropped the words 'planar magnetic' into conversation when describing them a few times. Given the number of blank looks I received at the phrase, I feel it’s important for me to explain it, given that it is the key selling point of these premium earbuds – and they may still enter our best earbuds buying guide as 'best planar magnetic buy' or similar.

A planar magnetic driver is a kind of flat headphone or earbud driver that's fragile, expensive and typically bigger than dynamic (cone-shaped) drivers, but it can offer a wonderfully balanced, detailed sound with less distortion – when done well. Planar earbuds are, as opposed to the homophone, definitely not plainer than dynamic ones.

The vast majority of devices touting planar magnetic drivers are headphones, including Edifier’s Spirit Stax S3 and S5, so the trick the company has pulled with the Stax Spirit S10 is using this tech for a new set of wireless noise-cancelling earbuds.

Cue earbuds lovers asking what audiophiles already know: “Do the Stax Spirit S10 sound good?” The answer is a resounding yes: they sound fantastic for true wireless earbuds, offering better audio than beloved rivals from Apple and Samsung. The dynamic range is wonderful, with pronounced bass and crisp treble, and I found them great for listening to anything from acoustic pop to synthwave and post-rock. The maximum volume could do with being a touch higher, but beyond that, it’s impossible to fault the sound of the Edifiers.

So why don’t the Edifier Stax Spirit S10 deserve a five-star review? Well, it’s hard to give a five-star review to a product with a five-star price like the Edifiers, given how high expectations are when you’re paying more for them than rival AirPods and Galaxy Buds. But that’s not the reason that the Edifier sheds a whole star.

The real reason is that the S10 have a few rough edges in the usability department that many rivals do better. My first gripe was pairing: they literally wouldn’t pair to my phone to begin with (leading me to blow the buds off for another pair I was testing initially, and it was only when I was about to hit ‘send’ on a message to my editor to tell her that the buds weren’t working that they finally decided to get their act together). Of course, this was just my personal experience – I'm unable to promise you'll have the same issues when trying to pair a set to your phone or tablet – but as someone who's tested literally scores of wireless earbuds, it's unusual and note-worthy for buds to simply refuse to pair to my trusted source devices. 

All through the testing period, they were slow to connect to my phone, and the odd droppage here and there when I was out and about got in the way of my listening.

Lastly, the S10 are the first of Edifier’s Stax Spirit devices to have Active Noise Cancellation. But you might not be able to tell, because it’s incredibly light-touch. There are various modes to pick from, but even the strongest struggled to filter out moderate chatter in my office, and the adaptive mode was, there’s no other word for it, ‘janky’. 

It’d sometimes change modes when I was sitting still, leading to a noticeable change in my audio despite not affecting the noise levels beyond it too much – and it changes dramatically. I wish there was an antonym for ‘seamless’ in a tech context; whatever it is, that’s how the adaptive noise cancellation sounds.

Edifier also triggers my pet peeve of audio companies: having multiple different pairing apps. I spent half of the testing period with Edifier Connect on my phone, thinking that the Stax Spirit S10 didn’t have an app, and it took me a while to realize that I actually needed to have downloaded EDIFIER Connex. Come on, Edifier!

Audiophiles are probably used to overlooking annoying quality-of-life issues in the quest for perfect sound, and the Stax Spirit S10 will be an enjoyable stepping stone in that journey. A comfortable fit, support for a nice range of codecs and other branded technologies, plus a distinctive look all help me overlook the strange quirks of the buds. 

Edifier Stax Spirit S10 review: Price and release date

• Announced in September 2024
• On sale in the US
• Cost $299 (roughly £230, AU$450)

Edifier announced the Stax Spirit S10 in September 2024 and released them shortly afterwards, so they’re available to buy in some regions right now.

In the US, you can buy the Spirit S10 for $299 – that price converts to roughly £230 / AU$450. I can’t find them on sale from trusted retailers in the UK or Australia but Edifier does sell gadgets in both regions, so we could see it roll out the earbuds to those places in the future. 

As you can tell from this price, the Edifiers are premium earbuds aimed at discerning buyers. They match in price the Technics EAH-AZ80 which top our list of the best earbuds and cost more than the AirPods Pro 2 and Samsung Galaxy Buds 3 Pro (individually).

Edifier Stax Spirit S10 review: Specs

Edifier Stax Spirit S10 review: Features

• 5-hour buds battery, 18-hour with case, when ANC is on
• Noise cancellation leaves a lot to be desired
• Some connection issues

The Edifier Stax Spirit S10 offer all of the features you’d expect in premium headphones… but they don’t all work perfectly.

The battery life is an example. Edifier doesn’t offer a battery estimate for the buds themselves, but says the case will offer 18 hours of playback with ANC on or 28 with it turned off. That’s not a huge number compared to competitors.

In my own testing, the Spirit S10 buds didn’t even last for five hours of playback when ANC was turned on – that’s one of the weakest battery lives I’ve tested in earbuds (it's close to that of the much cheaper AirPods Pro 4 with ANC, with noise-nixing deployed). They got to 4:55:17 until one earbud ran out, and the other was left on 6%. Based on Edifier’s case predictions, I’d estimate that the buds would last for 7 hours of listening if you don’t use ANC.

I didn’t find the battery-sapping ANC that great either; it did a fairly poor job at cancelling background noises. In my office it only succeeded in taking the edge off low-level surrounding chatter or the hum of the microwave, and alongside busy roads and railways it barely made a difference.

There are several different ANC modes: high, medium, ambient sound, wind reduction, adaptive and off. I stuck to high due to the fact that, as I said, it still didn’t feel like much, however I fiddled around with the others too. In adaptive, the modes would change for seemingly no reason, making quite dramatic and sudden shifts from time to time – this was often more than a little distracting.

The ANC is controlled by the tie-in app: EDIFIER Connex, which isn’t Edifier’s only audio app, confusingly. I tried to set it up with Edifier Connect for a while, which isn’t the right app.

Connex lets you play with an equalizer (and two presets), toggle noise cancellation, turn on a high-latency gaming mode, change the function of the on-bud buttons, turn off (or on) wear detection, change your audio codec and do a few other functions which we see in wireless earbuds. There are also a few extras which you don’t: you can change how sensitive the bud buttons are, which I appreciate, and also change the volume of low battery and connectivity prompts.

Something else I need to raise is that I had real connection problems when first setting up the buds – I could pair them once, but after that my phone just couldn’t find the buds, The way I solved the problem (admittedly after a week) was by unpairing the device and re-pairing it several times. 

Also, even once the buds worked well, they’d always take a short while to connect to my phone. It wasn’t dramatic, but I’d always have to wait a few seconds before listening to music, wondering if they'd dropped out again. I even accidentally played my playlist out loud a few times, before getting wise to the fact that pairing from the case takes the Stax Spirit S10 a while longer than most earbuds I've tested.

• Features score: 3/5

Edifier Stax Spirit S10 review: Design

• Clamshell case which holds the buds
• Thick stems give a distinctive look
• Buds stay in the ear well

The Edifier Stax Spirit S10 come in a ‘clamshell’-style case, which you open up to reveal the buds within. This case weighs 56g, is just a hair bigger than a golf ball, and has a USB-C port for charging. It’s definitely not the smallest headphone case I’ve seen, but it protected its contents well.

The earbuds themselves are fairly distinctive looking due to the width of the stem; you’re not going to confuse these for AirPods any day. The large size doesn’t really add to the ‘bulk’ of the buds, so it’s not an issue – it didn’t affect their ear grip from my experience – and it screams to people “these are serious earbuds for serious audiophiles!”.

For most of my testing period, the Spirit S10 were reliable at sticking in my ears. This was even the case through most of a gym session, until I hit the treadmills, so I wouldn’t recommend them for running with. They also fell out when I was doing certain stretches on mats so, again, these aren’t work-out buds unless you’re doing slower and more upright exercises.

The stems bear touch controls which you can customize in the Edifier app, but you’re meant to ‘pinch’ to trigger the control and I could never work out the right place to squeeze to get a reliable result. 

You’re getting IP54-rated protection with both of the buds – this means that they’re mostly protected against solid particles (sand or dust), but can only survive splashes of water. Don’t wear them swimming, then.

• Design score: 3.5/5

Edifier Stax Spirit S10 review: Sound quality

• Planar magnetic drivers provide fantastic balanced sound
• Equalizer gives lots of customization over sound
• Max volume could be higher

Any downsides that come from planar magnetic drivers (here 12mm ones) are easily outmatched by the positives: The Edifier Stax Spirit S10 sound really, really fantastic. 

I most appreciate the balanced audio you’re getting from the S10. You can hear every line of music as though they’re spread out in Avid Pro before you, and they’re all totally equal, from the lowest rings of the bass guitar to the screechiest soprano; the whisper of the hi-hat and the sniffs of the cold-addled drummer are all even.

Such a balanced mix helps you appreciate the song as it was intended to be listened to, as Edifier isn’t blowing up the bass until it drowns out everything else, or positioning the treble as so dominant that you’d think every song is acapella.

If you like your music a certain way then there is an equalizer in the app (hidden in the ‘Sound effects’ menu) which lets you listen to the default balanced mix, Dynamic (ie bass-heavy), Electrostatic (treble-heavy) or a customized mode with an in-depth equalizer to play around with. However I found the default Original mix so great that I preferred it during testing. 

Don’t worry about any distortion here, as another effect of planar magnet drivers is that it’s far less frequent. In fact, I didn’t notice any distortion during testing, however that may be partly because the Stax Spirit S10 don’t go very loud.

At the maximum volume, I found the S10 to put out music at a comfortable listening level… when I was at home in my quiet flat. Out and about, I’d often find myself struggling to make out parts of a song, especially with the lackluster ANC doing the bare minimum to cancel noise. If I had to commute into an office much more than I do, I’d probably opt for alternate earbuds. These aren’t the worst buds I’ve tested for volume issues, with the Nothing Ear still wearing that – crown? – but the Edifier really could do with being a touch louder.

True audiophiles (or technophiles) will appreciate the range of tech standards and codecs that the S10 support. These earbuds connect using Bluetooth 5.4 and support Snapdragon Sound, Google Fast Pair, aptX Audio, aptX Adaptive, aptX Lossless, LHDC, LDAC and Hi-Res Audio Wireless. To use these better-quality protocols, you’ll need a streaming service that offers them (not Spotify), plus a source that can support them in addition to just using the Edifier buds – but if you want the highest resolution a wireless connection can bring, these earbuds will not be a barrier. 

• Sound quality: 4.5/5

Samsung Galaxy Buds 3 Pro review: Value

• High-price earbuds with sound quality to match
• Feature set needs to improve for better value

To answer simply on whether the Edifier Stax Spirit S10 offer value for money: of course they don’t. No premium earbuds do, not when great-sounding alternatives exist for under $100/£100/AU$200.

The nature of tech is that you get diminishing returns as you slide up the tower of price, and so the Stax Spirit were never going to offer you competitive value for money, and they’re not designed for shoppers on a budget. 

Sure, they sound better than rivals, but they also cost more than these competitors too. Plus the feature set doesn’t work perfectly, and beyond the audio output there are no killer features here worth paying top dollar for. The Edifier Stax Spirit S10 are for audiophiles who have money to spend on their passion, don't care about ANC, and don’t need to get the most efficient value for their money.

• Value: 3.5/5

Should I buy the Edifier Stax Spirit S10?

Buy them if...

Don’t buy them if…

Edifier Stax Spirit S10 review: Also consider

How I tested the Edifier Stax Spirit S10

• Tested for 4 weeks
• Tested at home, in the office and on walks

The Edifier Stax Spirit S10 enjoyed a prolonged testing period; I used them for roughly a month to write this review, which meant I could really put them through their paces. I used them alongside an Android phone, mostly – so I could benefit from their support for LDAC. 

I tested the buds at home, in the office, commuting between the two and on an international holiday; most of my listening was on Tidal or Netflix, but I tried other music and video streaming services as well as calls, podcasts and more.

My tech reviewing history for TechRadar spans more than five years now, including lots of earbuds – and a few pairs of Edifier headphones.

• First reviewed in October 2024

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