KZ Castor in ear Monitor, Harman Bass Edition IEM with Dual Dynamic Drivers, Tunable Sound Wired Headphones Gaming Earbuds with 4-Level Adjusting Switch, Noise-isolating (Heavy Bass Version, With Mic)

Sound is a personal subjective experience. In my journey, I started with the expensive brands (before chi-fi iems exploded) with all different types of drivers: BA, planar, electrostatic, and dynamic. Right now, I can buy several pairs of chi-fi sets for the price of one of the other brands. UE (before logitech buyout), Etymotic, SHURE, Klipsh, and Sony were the brands I tried. After that, I tried a brand called 1more. After over 3 dozen pairs, what I finally found out is that I prefer IEMs with only dynamic drivers. This one fits the bill. It sounds to me most like the speakers I listened to growing up - which were mostly AR while they were still AR in the 1970s. Again, music is very subjective and it seems like my preference has converged on IEMs with 2 or more dynamic drivers per ear and no other type of driver. The brands I tend to buy are CCA, Kbear, Revonext, and TRN. The TRN V90s were my goto pair until I saw these dynamic only multiple driver models. I bought every pair that was multiple dynamic drivers under a specific price point. This model was one of them. These sound most like speakers to me and all 2-3 dynamic driver models I've listened to fit the bill and I regularly use all of them. The difference is really in the shell construction and the presence of the dip switches for passive EQ. For gaming, I use very light ones with transparent plastic shells and no dip switches. If I want to monitor a vocal performance, I'll use this model or one like it. These sound most like the AR-3a that I listened to during my younger influential years and I suppose, my brain think that's the way things should sound. I still have the speakers, but they are heavy and huge and really difficult to drive - so they stay in the basement. For my home theater setup, I use the smaller speakers (dynamic woofer and dome tweeter) and a sub. But the AR-3a and these iems still sound better, except the ARs and the IEMs are only 2.0.

Ended up getting the Bass version and was fairly impressed with what I had received. I wasn't expecting much from what the price is but these are very nice sounding. The Castor's have a sleek look to them and they fit very nicely in the ears, I get no pain from them. They feel durable and made out of good materials, These are for sure the best entry level IEMs I have seen on Amazon. The mic isn't impressive but at least there is an option to have one or not.

This was a Christmas gift and my grandson’s friend seemed very pleased with the purchase! The sounds was good and they seemed well made.

Cool

This is the first time I get some IEMs and I absolutely loved the, the bass version are super good. The standard version although it lacks the depth on the bass it doesn’t lack a rich full band

These were really great while I had them, but they broke incredibly fast and there was no option to refund or exchange it.

There grate headphones. Sound quality is excellent i highly recommend

These sound perfectly good to me and they are comfortable, but the sound went very quiet in the right earbud in two pairs of these I bought. I tested with my computer and my phone. I listened to the left earbud with my right ear to make sure I wasn't going deaf in my right ear and my newer pair actually had worse sound in the right earbud right out of the package. I am not sure how much effect the tiny switches have had but experimenting with them didn't help the low sound. It is apparently a gamble whether you will get a good pair or whether they will last. Also, I might have gotten a used pair, because the sizes of the rubber tips were mismatched and there were no replacement rubber pieces I recommend different earbuds from the same brand which worked well for me and lasted almost 2 years(with somewhat rough treatment). https://www.amazon.com/dp/B08DNHYQTL?ref=ppx_yo2ov_dt_b_fed_asin_title

Bon ecouteurs mais juste pour etre vraiment bien avec il faut régler le son sinon tres bien

The KZ Castor IEMs genuinely surprised me. For the price, I expected “okay” sound, but these came through like they were auditioning for a promotion. The bass is punchy and present without drowning everything else. The mids are clear, vocals sound clean, and the highs stay smooth without turning into ear-shredding sparkle. Legit balanced. Comfort is solid too. I wore these for hours while working and forgot they were even in. The build quality feels reliable, not luxury, but definitely way better than what you’d expect at this tier. The cable works fine and doesn’t fight me, which is refreshing. The value here is the real highlight. You’re getting entry-level audiophile performance without having to sell a kidney. If you want something that sounds great, feels comfortable, and doesn’t make your wallet cry, the Castor is a smart move. Zero regrets. Would buy again. These IEMs absolutely understood the assignment.

If you play FPS games like Valorant, Warzone, Apex Legends, or CS2 — don’t even think twice. The KZ Castor is seriously next-level for the price. The soundstage is wide, the imaging is sharp, and I can clearly hear enemies behind me, above me, and across the map. It’s not just “good for the price” — it’s actually better than a lot of expensive gaming headsets I’ve used!!!! There’s no built-in mic, but if you care about audio performance and competitive advantage, this IEM is a no-brainer. Top-tier sound for a low-tier price.

Me encantan, calidad excepcional, el micrófono no funciona muy bien.

Siehe Titel, werden als In Ear-Monitor in der Band benutzt, passen mir gut und klingen klasse. Manchmal muss man nicht mehr ausgeben