Alrighty, been a long time since I made a detailed comparison post, so here we go! Today I’m sharing my thoughts on my journey with TWS ANC IEMs (and, as always, YMMV).
The contenders
- Soundcore Liberty Air 2 Pro (called Air 2 Pro from now; discontinued; RRP £110)
- SoundPEATS mini pro HS (called mini pro from now; RRP £63)
- AKG N400NC (called AKG from now; between 48 - 150 USD).
Btw, all 3 IEMs have been reviewed by more knowledgeable folks than me, so check out YouTube as well.
Before I begin, I want to give a big shoutout to @nymz for his Santa gift - AKG N400NC. They were almost brand new, all accessories included, in perfect condition. Thanks again for your generosity, amigo - you da best
Santa's gift
Ok, so here we go with the IEM comparison!
Usability (fit, comfort, app support, ANC, connectivity, touch controls)
I think usability is one of the important criterion when assessing TWS. I use TWS when I’m cooking, cleaning, commuting, travelling, or walking. I’m willing to compromise some sound quality for going wireless and getting ANC. So, rankings in this section:
- mini pro
- Air 2 Pro
- AKG
Overall, I found mini pro the most comfortable and easy to use. They fit my ears perfectly, they are light, and the case is the perfect pocket-size. I’ve worn them for >3hrs and did not have any pain. They connect via BT in a couple seconds at max, and haven’t had any lost connections. ANC is average: sufficient to dull out the kitchen fan noise or a 2-hr flight, but it was clearly inferior to ANC and Air 2 Pro. Touch controls work ok, on par with Air 2 Pro. Unfortunately, mini pro doesn’t pause music when one shell is removed, and its app is pretty basic.
I had issues getting Air 2 Pro to connect from time to time, which required a “reboot” via the case. It also took the longest to connect to my Android phone. I also found it uncomfortable to wear for more than 1-2 hrs at a time. Air 2 Pro app was the best, however, offering preset and custom EQ, custom ANC, different ANC modes.
AKG is a mixed bag: it feels the most premium out of the three by a long mile. The case has a nice weight, and the unboxing experience was A-class. It was also pretty quick to connect to my phone. But… it has the worst app ever. It forces you to turn on location support, and even then, it can fail to find the earphones. Also, it offers the best ANC, but its touch controls are finnicky as hell so turning it off on the go to hear something quickly is non-trivial, and the shells are big and heavy compared to the other two. Also, AKG is the only one to not offer LDAC.
Sound quality
This is a pretty easy exercise:
- AKG
- mini pro
- Air 2 Pro
There are squig graphs available for AKG N400NC (e.g. Squiglink - IEM frequency response database by IEM World) and mini pro (Squiglink - IEM frequency response database by Paul Wasabii), but not for Air 2 Pro. I’m pretty sure I can tell you what that graph will look like though - a big ass V. Air 2 Pro is sibilant, and bass is boomy. It can rumble, yes, but a bit too much bleed. I had to EQ the treble right down to stomach some YouTubers and podcasts. Overall though, I used Air 2 Pro because it was my first TWS IEM, but once I had other options, I barely touched it. And yes, you can probably EQ it to sound better, so if that’s your thing, then maybe it’ll sound ok with some work.
The first time I listened to the AKG, however, I could tell this had a polished tuning. However, I was really surprised at how bassy it was - AKG is tuned to the Harmon target, but apparently that’s really bassy to my ears! Lots of nice rumble and good noteweight, but it did bleed into the mids. Mids sounded pretty good, and instruments have the best timbre of the three (although not on par with nice wired single DD IEMs; saxophone and trumpet sound a bit unnatural). The treble sounded a bit recessed to my ears. e.g., cymbals sounded recessed at times. Stage has decent width but not much depth or height.
Interestingly, if you look at mini pro FR graph, you might think it’s super bassy, and that’s true, but it has nice texture (I believe they use a biofibre DD), and by applying some DSP magic, it doesn’t bleed into the mids much. The treble can get a bit hot (e.g., Adele’s Crazy for You), but nowhere near as bad as in Air 2 Pro. The noteweight is a tad thin compared to AKG, but better than Air 2 Pro. Mini pro has the best stage (for a TWS - not as good as Olina, for example).
Conclusion
I know that AKG is the premium earbud - it has the most “polished” tuning, excellent build, best ANC, and the “Crin approval,” and yet, I don’t reach for it when I’m on the go. Instead, I use the SoundPEATS mini pro HS 75% of the time due to the usability factor. I’m still trying to work the AKG into my daily routine, but if I can’t, then I’m pretty sure @nymz will be more than happy for that item to find a new home