Pros: Great sound, built and comfort

Cons: Bluetooth reception could be better, no storage case

First of all I’d like to thank Axgio and Michael for giving me a chance to check out the Axgio Sprint Bluetooth IEM.


The Axgio Sprint is available from Amazon:






I’m not in any way affiliated with Axgio and I do not gain any financial benefits from this review.


Short introduction to Axgio:

Axgio is a technology company that design smartphones and accessories. They like to be considered an engaged and intelligent company rather than a manufacturer


Let’s see how smart they’ve been when designing the Sprint.


About me:

I’m a 43 year old music and sound lover that changed my focus from speakers to headphones and IEM’s about five years ago. At that time I realized that it wasn’t realistic for me to have all the different setups that I wanted and still house a family of four children and a wife so my interest turned first to full sized headphones and later also IEM’s.


My preferences are towards full sized open headphones and I believe that also says something about what kind of sound signature I prefer (large soundstage in all directions, balanced and organic sound).


My music preferences are pretty much all over the place (only excluding classical music, jazz and really heavy metal). My all-time favorite band is Depeche Mode although I also listen to a lot of grunge/indie, singer/songwriter/acoustical stuff as well as the typical top 40 music.


I do not use EQ, ever.


I’m a sucker for value for money on most things in life, Head-Fi related stuff is no exception.


Built and accessories:

The Axgio Sprint is a Bluetooth IEM with over the ear fit and features a 7mm dynamic driver.


It’s only available in black color.



The accessory pack is decent when it comes to the included tips. Unfortunately the only other included accessory is a USB charging cable.



Built quality is top notch and the over ear fit make them sit close to your ears. I find the ergonomics on the Sprint to be excellent. Isolation is about average for an IEM. The Sprint is also sweat proof.



In spite of being a Bluetooth IEM the Sprint has got a cable connecting the housings to each other. This is also where the remote and mic unit is located. The cable is about 50 cm long and it feels like a perfect length to me.



Battery time is stated to be 8 hours and I find that to be correct and the microphone hosts a micro USB port for charging. Charging time is about 2 hours.



I’ve really enjoyed the Sprint and not having to worry about the cable getting stuck or bringing my phone with me every time I get up from my desk has been great. It’s also been very nice to be able to listen to music while moving around the house and while working out.








The accessories pack is decent for the price and includes the following:


3 pairs foam tips of god quality (S, M, L)


4 pairs silicon tips (XS,S,M,L)


(I’m sorry but I managed to misplace the foam tips for the photoshoot).


I would really have liked for Axgio to include a storage case or at least a soft pouch to keep them in when not in use.




The short cable is rather thin and smooth and features memory wire for a secure over the ear fit. The housings are all plastic but its high quality plastic and they seem very solid and well built.


Connecting the Sprint to you phone is very straight forward and you basically just turn them on and open up the Bluetooth settings on your phone to make the connection and you’re ready to go.


The remote control also works fully with my Xperia Z3 phone (something that’s not always the case) and the mic seem to be of good quality. There’s a small light on the microphone that shows whether the headset is turned on or not and it tells you by voice if you put them in your ears before turning them on, very nice.


The upper button is volume up (long press for next track), middle is volume down (long press to start the current track again) and the lowest one is play/pause and answering calls. Ideally I’d preferred the middle button to be play/pause/call since that’s what I’m used too from most of my other IEM’s with inline mic but this is not a big deal.



The only potentially drawback I’ve found on the functionality is that the Bluetooth reception isn’t the best. As long as I use them indoor it’s pretty decent but for outdoor usage I would’ve preferred a stronger receiver in them. I use one of those wallet phone cases and it seem as if it weakens the Bluetooth enough for the Sprint not even to work if I put the phone in my jeans pocket. If I use the case I need to put the phone in my jackets breast pocket for it to work properly. If I remove the wallet case I can easily put them in my jeans pocket while moving around outside. An armband for running does also work great.



My general impression is that the Sprint feels robust and well thought out and is a really convenient alternative when you’re moving around be so at the office, at home or while working out.




The Specs:
Chip: CSR8645 (with AptX)
Bluetooth Version: 4.1
Profile Supported: HSP, HFP, A2DP and AVRCP
Battery Capacity: 130mAh
Charging time: about 2 hr
Charging port: USB cable
Music time: 8hr
Talk time: 8hr
Driver Unit: 7mm (SPK)
Frequency Response: 20 Hz-20k Hz
Dimension: 13.7*13.7*18.3mm
Siri: Yes




I’ve let them play for over 50 hours and I’ve used them while working out, at the office and at home and I’ve not found any weaknesses to the way they’re constructed. I’ve been using them exclusively with my Sony Xperia Z3compact phone. I’ve owned them for a little more than two weeks.


Demo list:

Mark Knopfler – Sailing to Philadelphia

Røyksopp (Feat.Susanne Sundfør) – Save Me

Ane Brun – These Days

Michael Jackson – Dirty Diana

Metallica – Die Die My Darling

The Peter Malick Group – Immigrant

Eva Cassidy – Songbird

Thomas Dybdahl – A Lovestory

Norah Jones – Don’t Know Why

Celldweller – Unshakeable

Jack Johnson – Better Together

Seinabo Sey – Younger (Kygo remix)

Dire Straits- So Far Away


The overall sound signature of the Sprint is pretty well balanced with a warm, full, smooth presentation and a slight lift in the lower bass region.



To start from the lows the sub bass is present but far from overwhelming. It extends fairly low and does have enough impact to make the Sprint enjoyable with most kinds of music.  The mid- and higher bass is less noticeable and this makes for a clean and clear overall listening experience.



The midrange is smooth and liquid and feels well in balance with the rest of the frequencies (i.e. is not recessed). The mids feels like the strongest part of the Sprint’s presentation to my ears.



The treble is also full and smooth but lacks some extension in the top range. It does however blend in very well with the rest of the presentation.



Soundstage in all directions is about average for an IEM. Although micro details and clarity is not where they perform their best they still manage to deliver a good enough performance in that area to stay enjoyable.



In total the Axgio Sprint offers a non-offensive, warm and smooth sound that I think goes very well with the intended use of a Bluetooth IEM, when you’re on the move, out and about.  Without really excelling in any area they still manage to sound very good. I’d consider these to be a good performer in its price range even if they didn’t offer the Bluetooth functionality.




The Axgio Sprint offers a smooth and non-offensive listening experience that I believe most people will enjoy, I sure do. This combined with excellent ergonomics, 8 hours of battery life and a solid build quality makes them an easy recommendation for anyone looking for a Bluetooth IEM in the $50-100 range. I’d even go as far as to say that they’re the best sounding Bluetooth headset I’ve heard this far, well done Axgio.

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