KZ Castor Pro in Ear Monitor, Dual 10mm Dynamic Driver, Harman Target Improved Bass for Hi-Res Audio Quality, 4 Tuning Switch, Oxygen Free Copper Flat Cable, 0.78mm 2Pin & 3.5mm Plug Compatible

It's more than what I had expected, the sound quality is just too good to be true.First of all the lows are amazing and with the tweaking u can adjust it as per your likings, the vocals and mids are clear and u can literally separate each and every instrument. Even at high volumes the quality isn't distorted. It also works great with a 3.5mm to type converter no loss or anything. I even used these for FPS games and the sound the footsteps and everything is pinpoint. But the wire being a bit small it would be better to have a male to female 3.5mm extender. For long use I would definetlt recommend these. But yes u will have to be a bit careful with the wire it's a bit delicate. Other then that the bass is good i don't think u will be disappointed it's not too powerful it's not too less it's just perfect doesn't overpower or anything. And I would suggest you to go with the microphone version except that, very easy to use, connectivity is great since it's wired no latency of whatsoever. If this is your first iem I would suggest you to just go for it don't think just buy it.

Works pretty well. Built quality is good.Mic is not very good. It is not too comfortable. But one may use it for 2 hrs straight without feeling any discomfort.Audio quality is as good as they claim.One down side is sometimes when I connect it with my phone, the phone glitches and it's volume is decreased to zero and sometimes when on a call, my screen freezes and mic stops (my phone normally never freezes, slows down or glitches.. it's a good phone)I use it with a DAC connector. So maybe it's the earphone, the DAC or the phone(I don't think).

The KZ Castor Pro Harman Silver Version has completely exceeded my expectations! The build quality is rock solid and premium in hand. Its tremendous performance and crystal-clear sound detailing make every note and instrument stand out with absolute clarity.The HD MIC is another standout feature—super clear and crisp voice capture during calls or recordings. Whether you're a casual listener or an audiophile, this IEM is a game changer.Truly value for money, and I can confidently say you won't regret this purchase. All music lovers—don’t miss this one. KZ has nailed it with the Castor Pro Harman Tuning!

Very much good, only little problem is soft music are not preferable for this...Yes mic was very goodnoise are not hearableLoud bit music was good performanceFiting was good but it's little bit heavy

The product is good has a decent sound & mic but it is too big n heavy to my ear not comfortable for long time wear the other side stop working after 2 months (5-8 hours used a day) so I gave 3 star

I purchased the KZ Castor Pro primarily for use with my MacBook Air (M4) and as a budget-friendly alternative to my older premium headphones (Airpods Pro 2(music, movies, meetings) and Hyperx cloud alpha(Gaming)). After using it for a few days, I’m impressed with its performance for the price point. Sound Quality:The audio performance is excellent. The bass response is tight and punchy without overpowering the mids, and the treble is crisp yet smooth, avoiding any harshness. It works well for a variety of genres, from EDM to acoustic tracks. Instrument separation is decent, and the overall soundstage feels slightly wider than most wired IEMs in this price range.Build Quality & Comfort:The build feels sturdy enough for daily use, and the ear tips provide a good seal for passive noise isolation. The fit is comfortable even during extended listening sessions, but as my ears are small, the outer part rubs on my ear outer muscle, which pains after 1-2 hr continuous use, though the cable feels slightly thin and could have been more premium.Compatibility & Features:On macOS, the earphones are recognized as a standard wired headset. If you’re expecting Apple’s Spatial Audio feature to work, keep in mind that it’s exclusive to AirPods (Pro/Max/3rd Gen) and some Beats models. You can still achieve a surround-like effect on the MacBook using third-party apps like Boom 3D or eqMac, but native Spatial Audio is not supported.Pros:Excellent audio quality with balanced tuning, Comfortable fit for long sessions, Great value for moneyCons:No native support for Apple Spatial AudioCable could have been better in terms of thickness and flexibility Final Verdict:The KZ Castor Pro is a fantastic option if you’re looking for wired IEMs with great sound quality on a budget. While it lacks support for Apple’s ecosystem features like Spatial Audio, it delivers where it matters most: clear, enjoyable sound. Highly recommended for music lovers who don’t need wireless or Apple-specific features.Settings: All Down.

The cable isn't working after few months and to claim warranty you have to ship your earphones at your expense and then also after approval you get your problem solved or may be notAudio quality is great but incase any problem arises it's hard to claim warranty so in my opinion don't waste your money on the product

This is my very first in-ear monitor (IEM), and I’m absolutely blown away. The KZ Castor Pro has completely changed how I hear the world—tiny details in music and audio that I never noticed before are now crystal clear. The dual 10mm dynamic drivers and Harman Target tuning truly deliver rich, immersive sound with improved bass that doesn't overpower the mids or highs.The build quality feels premium with the oxygen-free copper flat cable and sturdy 2-pin connector. The HD mic performs well for calls, and the tuning switches let me customize the sound to my taste.Honestly, I didn't expect such clarity and performance at this price. It’s a game-changer and I’m loving every minute with it!