KZ Castor IEM, kz in Ear Monitor Earbuds with Dual Dynamic Drivers for Musicians Singers, Tunable in-Ear Earphones Headphones with 2dd Drivers, Adjusting Switch, Noise-isolating, Memory Foam Eartip

Used for drummer in ear monitor

I'm very impressed by the sound quality and variability of tweaking these earphones for their price. I will say however after an hour or two of wearing them they do tend to start becoming uncomfortable

Was looking for earphones like these for a while, and when tuned properly (Not a hard thing to do, just need to fidget with the switches), the Bass comes to life, it rumbles for certain tracks as well. Exactly what I needed, look amazing as well.

I wasn't expecting too much but I'm very very surprised. The bass is really deep and warm which I love. But the separation has really surprised me. You can hear each individual instrument with great clarity. I have both bass switches on full and the 1st mid range on but the 2nd one off and they sound sublime. I wouldnt say they are up there with my sennheiser hd25 but for the price these are incredible.

5*****

No matter the music, no matter the (admittedly cool, clever) dip switch options, everything sounded very tinny, trebbley. I wasn't expecting lots of bass, but some? Any? I tend to listen to a lot of Electronic which has no where near as much bass as other genres, but I was expecting what was there to come through. These IEMs seemed to just cut it out altogther.Maybe the plugs didn't fit right, none of them did. It came with three: Small, Large, and suspiciously similar to Large.I was expecting a lot more considering the £15 pair of Bluetooth buds that came free with my old phone, can deliver a lot more.

Came with rubber not memory foam buds which obviously won’t make them noise isolated, cannot figure out how to contact them to tell them, also came with a SIM card pin ejector weirdly

The sound isn't bad for £20. However the bass is really fatiguing and gets really uncomfy after 20-30 mins. My left ear was always in pain and i couldnt get used to it. I used this mainly for gaming (rainbow six seige). The directional audio is decent, soundstage isnt really a thing though. Wouldnt recommend for any sort of gaming. Wouldnt recommend at all due to discomfort and fatiguing bass, but everyone's ears are different. Returned this after a week

I have other KZ IEMs, The Zs10 Pro X and the ZEX. These Castors are another excellent IEM from KZ which delivers excellent sound quality for the money. Honestly, the sound quality out of these is comparable to something like Samsung Galaxy Buds 2 in my opinion, and definitely better than early version Apple Airpods... For $30CDN. It's a no brainer. Also this might be the cheapest IEM I've seen that has onboard EQ adjustments via 4 tiny switches on the actual IEMs themselves. I have nothing to complain about. For $30, this is a 10/10 IEM.

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.

Não vejo nenhum problema.

Bastante bien, suenan increíble, solo que tuve que devolverlos para adquirir la "Bass Version" que para mí son más importantes por ser baterista y neceisto sentir esa sensación de unos buenos graves, pero son lugar a duda para un guitarrista, tecladista o vocalista estos son geniales.

One star for that its well built. But the lack in sound quality is huge.Bought for listening to music, but all freq below 200hz is missing making it pretty much worthless for the intended purpose.