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Source: A phone will do because it is very easy to be driven fully but a neutral or balanced source will greatly tighten and lessen a bass. I found the pre-fitted tips too big as the nozzle was quite long so replaced these with the smaller size ones and used the supplied cable. Thus equipped, I obtained a very comfortable fit and seal. I used an Xduoo X20 DAP as the primary source and also employed a Huawei smartphone and a CD player. The immediate impression was of a bold V-shaped signature with powerful bass and an energetic treble with good extension. Mids were recessed but still fairly present and the overall tonality was warmer than neutral in the bass and brighter in the high frequencies. The soundstage was a particularly good feature, being large in all dimensions and especially in width. This amounted to a "fun tuning" not dissimilar to the KZ ZS10 Pro.
The cable is a standard 4 core braided type similar to that supplied by KZ with a chunky plastic Y-split and no chin slider and is thus prone to tangling. The connectors are a 2-pin angled and hooded type with short pins and the termination is a 3.5 mm right angled plastic plug. In my opinion, the soundstage and imaging capabilities of the KBEAR KS2 is pretty good, not super impressive but it is there and at this asking price, it has got to be one of its strengths as compared ot other offerings in this price range! Male-vocals: Hiroyuki Sawano – Pretenders (00:57-01:17) recessed male vocals but quality is pretty good.TREBLES: Although there are no particular hisses or excesses generated by the balanced armature in the output nozzle, the highs are a bit confused and poorly controlled, especially in the frequencies between 4k and 8k there is a lot of confusion. That’s one more reason why drummers will not love this headset: the charlestones are a bit of a slap and the bass drums do not explode as they should (don't try listening to Dream Theater, you will cry). I would like to thank KBEAR for providing this review sample. It can be gotten here: https://www.aliexpress.com/item/4001134070208.html The sound isolation provided by the KBEAR KS2 is noticeable right away, with a respectably subdued perception of the environment with or without music. In the upper-bass and lower-midrange, the KS2 is leaner and more neutral while the mid-bass and the treble levels are similar. This gives the KS2 a deeper V-shape compared to the KS1. As a result, KS2 has more clarity and better resolution but the KS1 sounds more cohesive and organic.
If anyone wish to stop reading here, to me, the KS2 is easily a very good value iem, I’d grab one just for enjoyment sake.Ideally the modified set could possibly implement a planar driver configuration? The resulting boost in mids would create a far more full bodied & lush tonality - increasing instrument rendering, which in turn would consequently improve clarification of authenticity! Female-vocals: Hiroyuki Sawano – OldToday (01:25-01:52) the vocals are pretty average in how natural they are (for hybrids), but the issue is that it is recessed where it should be more forward (although not more forward than the instruments more like it needs to be in the middle). A very mixed review for both the KBEAR KS2 Earphones and the KBEAR S1 Bluetooth Cable. I love the audio quality of the earphones, but the original cable’s multi-function control button is quite limiting. Upgrading to the Bluetooth cable improves the user experience in terms of control but creates more nuisance in terms of poor audio quality.
The DT6 (1DD + 1BA + 1 Piezo) has worse timbre especially for acoustic instruments, but is more balanced and less V shaped than the KS2. It’s somewhat neutral-ish tonality and overall character very easy to just dive in and enjoy straight up. The cables itself is exactly the same as you have seen on many KZ, CCA and TRN models; while the 3.5mm connector has an L-shape and the inline 1-button remote/control is constructed in plastic. If you’re looking for a set with huge stage KBEAR KS2 represents amazing value. The soundt-stage & tuning of the single BA&DD configuration adds up to a bargain price. The main caveat being they have very average housings, & are tuned to emphasise treble - hence they might possibly be too genre specific for some?In The Ear The KS2 has a very familiar silhouette with the same shape and design to its face plate used by brands like KZ, FiiO, TFZ, among others. The rest of the shell doesn’t stray far either, except that it is quite a bit thinner giving the KS2 a tighter, lower profile fit. The plastics used feel in line in quality with KZs and CCAs, behind brands like FiiO with the FH1S, and above TRN with the V30. Fit and finish is quite good with all component parts lining up perfectly. Seams are impressively, well, pretty much absent. Can barely feel them even with a fingernail. Disclaimer: The KBEAR KS2 was provided at no charge by KBEAR, however thoughts and opinion on this product are entirely my own. The ZS10 Pro has better technicalities (except soundstage and imaging), but I found the timbre on both sets to be artificial for non-stringed acoustic instruments, with the KS2 being a worse offender in the timbre department.
The mids and highs are tuned quite well and they are the highlight of this IEM. The BA excels in delivering sibilance free highs with sufficient details. Vocals are fleshed out well – neither too forward nor recessed. There is some bass bleed into the lower mids, and it is noticeable, but not so pronounced to cause annoyance. The 2-pin connectors and Y-split are rubber while the right-angled 3.5mm termination is right-angled. It’s a fairly lightweight cable that handles reasonably well and doesn’t suffer from microphonics. Sound Bass is a tad too much for my taste… HOWEVER, it is clean, fast, punchy bass. Not muddy or wooly. Great for EDM stuff. How would you compare them to apple earbuds? I know apple earbuds typically have descent quality, but horrible leakage. I’m trying to find descent budget good quality, low leakage earbuds I can use for making and listening to music.
When it comes to music, the KB Ear KS2 is an IEM that excels at bass oriented music with low treble presence in the mix and no vocals. Specifically Lo-Fi. All other genres out the window! The KBEAR KS2 does a good job resolving a decent amount of detail and providing brightness as to escape from darkness territory while at the same time not becoming too fatiguing. The KBEAR S1 Bluetooth cable features the latest in wireless technology with a Qualcomm QCC3034 chip and V5.0+ APTX-HD Bluetooth connection. To use, you’ll need to power on the cable by pressing and holding the middle button, you’ll hear the usual robotic voice to confirm power on. Perform a search on your iOS/Android/Windows device for ‘KBEAR S1’ and connect to that option. Again, you’ll hear the other usual robotic voice confirming successful pairing.
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