【KBEAR KB02】Super Bass In-ear Monitor Earphones Beryllium-plated Dynamic Driver Hybrid HiFi Elastic-piece Type Bone Conduction IEM Headphones for singers

It is a very balanced IEM. Punchy bass and mids. Waiting to get more out it after burning. You can't get any other better sounding IEM in this price range. Before ordering, I was having few queries. All were responded very well by Keephifi support team.

음질, 성능 모두 만족합니다.
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Buen producto adecuado a su precio y la entrega se ha realizado de forma trazable y rápida. Estoy contento con la compra y lo recomiendo

Super fast delivery......, iem are still in testing.

Pros: Nice shells
small box
3 different kind of tips
Cons: very thin cable
KB ear KB02 Documented experience

I got KB Ear KB02 directly from the manufacturer in exchange for a review. I am free to write what I want however these are only one man's opinion.

Allow me not to do photos: my photo skill are average at best.

I am 56.6 years old dude with no musical study or talent but no detected hearing loss either. My hearing "ends" at about 12.5 kHz.

Box is not big but right: IEMs are safe in hard sponge; cable and 3 different kind of tips are in plastic bags in a box. Outer box has a sleeve with detailed info printed on the backside. Not a KZ cheap one, mmmkay ?

Shells are mid size with a bit of CIEM-like shape on the inside; faceplates are blue-purple pearl-like with silver KB EAR logo. Except the metal nozzle ( mid length, 5.2mm wide with 6.3mm wide lips ) whole shell is plastic (resin or acryl: I do not know). Sockets are flat 0.78mm kind; there is a small hole next to them. Shells resonate if got a hit or knock.

IEM has 1 DD + 1 BC driver.

Cable is a disgrace to the metal and plastic it is made of; yeah it is working, but I have lot thicker shoelaces; flat 0.78mm / 3.5mm connectors. I tried and switched to the original cable of the TSMR X; all tests are made with it.

I did not try the tips but they look identical in 3 different colors. Tips feel thin but usable.

Sensitivity: 108 db/mW
Impedance: 40Ω

Moderately hard to drive; needs more juice than the Celest Wyvern.

I did not feel driver flex but I rarely feel it.

FR says subbass is stronger than midbass, but feeling is opposite; I miss the rumble. I am a lover volume listener; after I gave juice subbass just came out of the cave but rumble is still not strong.

Mids are recessed and does not feel clear; maybe "muddy" is a bit strong word here.

Treble is quite right: it is present, not shouty, but not silky or airy either. Sure it is not comparable to 200+ USD sets but no complain in this area.

Soundstage is good but not overly big.

Details are bearable but not a strong point of the IEM.

For 40 USD, this set is optimal to try Bone Conduction.

My rating ? For 40 USD: this is a solid 4 star. Not checking the price but comparing to the whole range ? 3 stars.
3.5 stars in average.