🔌 4 tuning switches & Dual Dynamic Driver
🎧 Ideal for beginners: music enthusiasts, gamers, musicians
🎵 Bright sound: strong bass, lively & sparkly treble, clean mids
🔊 All-rounder and suitable for almost any music genre
🌟 Average wide soundstage
🏠🏞️ Indoor & outdoor use
⚡ Easy to drive, scales with portable DAC & AMP
🎤 In-line mic for calls, recording, meetings, gaming
⏯️ Play/pause
🛠️ Includes 3 pairs of silicone eartips, detachable 0.75mm 2Pin cable (Type-C)
📜 1-year IEM warranty, 1-month cable warranty
📧 For warranty claims: hello@theaudiostore.in
Description
KZ X AUDIOCULAR Castor Pro X Type-C IEM with Mic – High-Resolution Sound, Redefined
The KZ X AUDIOCULAR Castor Pro X Type-C IEM is the result of a groundbreaking collaboration between KZ and AUDIOCULAR—two brands with a shared mission: making Hi-Fi sound accessible without the premium price tag.
Engineered with the KT0211L chipset for stable digital signal transmission and equipped with dual dynamic drivers in each shell, the Castor Pro X delivers a high-fidelity listening experience that’s clean, powerful, and immersive.
🎵 Sound Signature
Bass: Deep, punchy, and controlled—perfect for EDM, hip-hop, and live recordings.
Mids: Rich and emotive—vocals and instruments sound natural and engaging.
Highs: Crisp, detailed, and airy—adding sparkle and width to your music.
The Type-C silver-plated cable ensures effortless plug-and-play compatibility with smartphones, tablets, and laptops while delivering cleaner, distortion-free sound. Paired with Audiocular Atmos eartips, this IEM offers superior fit, comfort, and isolation for extended listening sessions.
Perfect for audiophiles, gamers, and musicians, the Castor Pro X combines precision tuning, ergonomic design, and premium accessories into one versatile, professional-grade IEM.
Key Features
✔️ Dual 10mm Dynamic Drivers – One dedicated for bass, one for mids & highs, ensuring a wide soundstage and balanced audio. ✔️ Four-Switch Tuning System – Customize your sound across bass, mids, and treble for different genres & preferences. ✔️ Professional Acoustic Engineering – Designed with musicians in mind, offering smooth crossover transitions & accurate frequency response. ✔️ Premium Audiocular Accessories – Includes upgraded Atmos eartips and silver-plated Type-C cable for better comfort and cleaner sound. ✔️ Ergonomic Hybrid Shell – Lightweight resin-metal build for durability and all-day comfort. ✔️ Detachable Cable System – Upgrade or replace cables easily for longer product life. ✔️ Built-in Mic & Controls – High-sensitivity microphone for calls, voice chat, and media control.
Technical Specifications
Drivers: Dual 10mm Dynamic Drivers
Chipset: KT0211L Digital Processing Chip
Tuning: Four-Switch Adjustable System
Cable: Audiocular Silver-Plated Type-C Cable with Mic
Connector: Detachable 2-Pin 0.75mm
Shell Material: Hybrid Resin + Metal Faceplate
Sound Signature: Balanced Hi-Fi with customizable tuning
Compatibility: Smartphones, tablets, laptops, and devices with Type-C ports
Box Contents
1 × KZ X AUDIOCULAR Castor Pro X Type-C IEM with Mic
1 × Audiocular Silver-Plated Type-C Cable
3 × Pairs of Audiocular Atmos Eartips
Drivers: Dual 10mm Dynamic Drivers
Chipset: KT0211L Digital Processing Chip
Tuning: Four-Switch Adjustable System
Cable: Audiocular Silver-Plated Type-C Cable with Mic
Connector: Detachable 2-Pin 0.75mm
Shell Material: Hybrid Resin + Metal Faceplate
Sound Signature: Balanced Hi-Fi with customizable tuning
Compatibility: Smartphones, tablets, laptops, and devices with Type-C ports
Box Contents
1 × KZ X AUDIOCULAR Castor Pro Type-C IEM with Mic
1 × Audiocular Silver-Plated Type-C Cable
3 × Pairs of Audiocular Atmos Eartips
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form
Cable: 1-month warranty only for manufacturing defects only
KZ is a highly popular brand that has gained a lot of recognition in the audiophile community for its affordable yet high-quality In-ear monitors. They also offer after-market upgrades for IEMs, eartips, carry cases, and TWS wireless adapters.
Hey,
I recently purchased the KZ Castor Pro X, and the left side isn’t working properly — the sound is very low.
I’ve already tried switching the buttons, but it didn’t help. 😕
This is my first IEM, and I’ve used it for less than a week. Please help me out.
K
Krish Verdhan (New Delhi)
Harman Target with Improved Bass
Bass
I love the sound quality which top-notch in the tier. But I don't feel any difference when i switch the hardware Equalizer. And i personally think that wheter there is a additional driver for low frequency but still the clarity of vocals and mid faded bass.
S
Sai Vamsi (Chennai)
Harman Target with Improved Bass
I feel the IEMs are good but the collab is not good
I feel the IEMs are good but the collab is not good, the type c cable with inbuilt DAC is not giving the proper volume with android mobile but with laptop it is good, so, if you have an android , do not buy this, buy the one with 3.5 mm and a D07 DAC, KZ Castor pro is overall good iem but not this collab, it just does the job but not quality
A
Arvind (Virār)
Harman Target with Improved Bass
Not much superb sound quality
Not much superb sound quality. Same like others brand sound only e.g.. JBL & Boat. My Expectation to this IEM was that i will get the superb bass sound that i will enjoy while listening the music.
A
Anonymous (Pune)
Harman Target with Improved Bass
Excellent
I like the product it fulfills my needs.
Thank you
P
Pawan JADHAV (Pune)
Harman Target with Improved Bass
BEST IEM
I have used Moondrop Chu 2, but AUDIOCULAR X KZ Castor Pro iem feels better than Moondrop Chu 2
good sound and clear even without the dac and anything haven't tuned anything still clear sound!
TANCHJIM Bunny IEM With Mic - 3.5mm
10/03/2025
Nikesh Shrestha
End game (If there truly is one?)
After having owned a few kilo-buck IEMs, I was prepared to get something that was insane and probably endgame and rightly so Pritam sir recommended the FIR audio Xenon 6 and thus deep dived into this and I am sure this would be the end game IEM for me.
The XE6 is so wonderfully crafted looks like piece of jewelry and although a large IEM it is very comfortable for me for long sessions.
It sounded good from the start and was really different from the other IEMs. It started to sound even better and grew on to be the best I ever heard after listening to it for longer. I paired with Astell&Kern SP3000T and Hiby rs8 II and with desktop DAC Amps (FiiO K19, Topping D70. A70, Hifiman R2R and Xduoo TA 22) and the immersive, warm, musical and soundstage that filled my head all over. The sub bass is where it stands out the most, but the mids and highs are also so clear and crisp. I havent yet tried to change the atom modules as yet, I am sure this will make the XE6 even more great than that it already is.
The shells in the IEM I were crafted in the US (was crafted in China earlier, but as Trump wanted his MAGA force it had to be made in the US now)
This is definitely end game worthy!!!!
FiR Audio Xenon 6 IEM
10/01/2025
Shubham Karma
Moondrop Chu 2 Review (After 5 Months of Use)
I’ve been using the Moondrop Chu 2 for around 5 months, and I’m really happy with them overall. The size is very good – small, lightweight, and comfortable for long sessions. They fit well in the ears and don’t feel bulky at all.
In terms of sound, they’re excellent for the price. Clear mids, detailed highs, and a balanced tuning that works great for vocals and instruments. They still feel solid and well-built even after months of daily use.
The only drawback is the bass – while it’s clean and controlled, it’s not very strong. If you’re looking for heavy bass, these might not fully satisfy you.
But if you want clarity, balance, and detail in a compact design, the Chu 2 are a fantastic choice.
MOONDROP CHU II IEM
09/30/2025
ric ric
value for price
Very good value for its price range,
Solid build, durable metal shells
Comfortable fit and decent ergonomics
Tuning flexibility thanks to interchangeable nozzles
Soundstage depth isn’t exceptional (though width / height are decent)
The black nozzle for brighter tuning is a bit aggressive.
KEFINE Klean IEM
09/30/2025
Akash Nath
Awesome Product
This is my first IEM..so I'm not knowledgeable enough to decide if it's the best or not..but definitely a good buy..go for it guys..and don't forget to pair it up with a good dac....
KZ Castor Pro IEM With Mic
09/30/2025
Aditya Shetty
Nice upgrade cable for the price
I got these cables for my CHU II because I broke the stock cable.
For the following reasons I would say it's a solid recommendation for it's price.
The cables themselves are not as heavy as they might look and more importantly, they are not "stiff, ear hooks are also fairly comfortable.
Also, they don't particularly retain shapes and seem to be freer and tangle free.
The quality on the cables is good, it's been almost two weeks, and I haven't seen any quality issues come out.
The mic quality on calls is decent, very serviceable.
Don't expect upgrade cables to change the tonality of your IEMs.
These don't have a chin-slider, I would have loved to see that.
(THE COOLEST PART, they include a free hard case and tbf it's actually a good case better than some listed even for around 300INR out there)
AUDIOCULAR C03 8-Core Silver-Plated Cable with 3.5mm Jack & Built-In Microphone For IEMs
09/27/2025
Anonymous
Tuned like a blessing formy ears
Tuned like a blessing formy ears, Go for it
SIMGOT EW300 IEM
09/27/2025
Hari Charan
For the price... it's performs seriously... no joke
I use the moondrop free dsp mini with my hidizs mp145 planar iems and the response is amazing. Micro details are good mids are just right. The bass is tight. You'll love it.
MOONDROP FreeDSP Mini CS43198 Portable DAC & AMP - 3.5mm
09/26/2025
Abhishek Survase
First EarBuds Ever!
After searching for around 7 days, I finally ordered these. I have received them just an hour ago. Will update the review in few days. Initial impressions are too good.
MOONDROP SPACE TRAVEL 2 Ultra True Wireless Earbuds
09/25/2025
Devadath SL
THE BEST BUDGET IEM UPGRADE CABLE
The Audiocular C03 is an exceptional value for money upgrade cable in the market with a decent mike and in line controls along with amazing build quality thank you The Audio Store for fast Delivery
AUDIOCULAR C03 8-Core Silver-Plated Cable with 3.5mm Jack & Built-In Microphone For IEMs
09/22/2025
Subhansh Gupta
Best Hybrid
Good for Gaming and Multimedia both
SIMGOT EW200 IEM
09/22/2025
soli
smooth audio with wide and clear soundstage
these iems are so clear with wide soundstage and these are small and lightweight and sits flat in ear without building out if u use small tips according to your ear , this is my second iem the first one was kz edx and it was bass heavy after listening to this , i find out that this is what we call iem neutral soundstage. this dsp version allows you to set a fix eq to the dsp and now you can use same eq anywhere you want if it is laptop or tablet or pc without installing an eq software, the app also have community driven eq sharing where individuals can share there eqs you can pick eqs from there to suit your preference
TANCHJIM Bunny Type-C DSP Plug with Mic IEM
09/21/2025
Soumyadeep Mondal
Fabulous Purchase
It is really really good and the vocals clarity is much more higher than the traditional default 3.5mm ports of smartphones. I think, it is a great investment.
AUDIOCULAR SPARK Hi-Res Portable DAC Dongle CX31993 + MAX Amp - Black
09/21/2025
Vijay B. Chavan
Best product
Anc & Transparency mode nice, Battery hrs fullfill & Mic quality top notch,
Soft touch Key function.
KZ AN01 ANC Enabled True Wireless Adapter for IEMs
09/21/2025
Manish M
Best IEM under 5K
Best IEM under 5K. You'll be surprised by the value you're getting.
KEFINE Klean IEM
09/19/2025
STAY TUNED ON EVERY PLATFORM
Brand Warranty
100% Original products with brand warranty
7 Days Replacement
On all orders*
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Ships in 24 Hours*
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Reshav Sarkar
GREAT FOR EXPERIENCING
it was an amazing product, really help you know how different eartips change the sound
AUDIOCULAR SuperMix 6 Hybrid Premium Eartips for IEMs
Aditya Joshi
Dammn!! it's good!!
good sound and clear even without the dac and anything haven't tuned anything still clear sound!
TANCHJIM Bunny IEM With Mic - 3.5mm
Savitr Sastri
I really like the fit
I really like the fit. Not sure how much of a difference the steel makes though.