KZ - Castor IEM


For Beginner Audiophiles iem under 2000

Dual Dynamic Driver | 10mm Dual Magnetic Dynamic Driver + 8mm Dynamic Driver for Outstanding Audio Quality | 2 Variants for Harman Target Version or Harman Target with Improved Bass Version | 4 Tuning Switches for 16 Different Sound Styles | High Precision 3D Printing Technology | Detachable 2-Pin 0.75mm Connector | 3.5mm Plug | In-Line Microphone

₹ 1,349 ₹ 2,199 Save ₹ 850

Tax & Shipping Included

Tax IncludedShipping Included

Color: Harman Target
Harman Target with Improved Bass
Size: No Mic
No Mic

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Free Shipping on Prepaid Orders

Same day dispatch, if ordered before 2:00 PM. Info Order Placed before 2:00 PM will be shipped within 24 hrs. (Except Sunday and Holidays)

Cash on Delivery Available Info Cash on delivery applicable for order under ₹ 15000

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10 Days Replacement Policy for Manufacturing defects. Info All products are covered by 10 Day Replacement Guarantee. This product is eligible for a free replacement, in case you receive a damaged, defective or different item. Please keep the product in its original condition with all accessories & packaging for a successful return. We may contact you to assess the damage or defect before issuing a replacement. Accessories like cables and eartips are not backed up the manufacturer's warranty.

Please note that physical damage cases need to be brought to our notice within 24 hours.

Simply Contact us through the chat window if you find any issues with your order.


1 Year Manufacturer's Warranty


Enhance Your Listening Experience and Comfort with KZ Castor


The KZ Castor features 10mm dual magnetic dynamic driver + 8mm dynamic driver with top and bottom stacked cavity structure for exceptional audio quality and an enhanced listening experience. By crafting each driver with a distinct purpose, KZ guarantees a seamless fusion of dynamic low frequencies and impeccably defined middle and high tones. The KZ Castor delivers superior sound quality and excellent control over a wide range of frequencies.


HARMAN TARGET VERSION: It depicts the perfectly balanced 3 frequency response with complimentary different genres of music. HARMAN TARGET WITH IMPROVED BASS VERSION: Harman Target Version: This variant has been tuned following the famous Harman Target frequency curve. it promises outstanding clarity with a harmonious midrange and quick lower-end response. It definitely sounds perfectly balanced and complements different genres of music well


The KZ Castor includes four tuning switches, each offering two-stage adjustments for low and high frequencies. These switches allow to create 16 unique audio profiles tailored to their individual preferences, suitable for various music genres. Each profile is finely tuned with specific impedance and sensitivity settings, ensuring the best possible audio output to match diverse sound preferences.


The KZ Castor includes a flat, transparent black cable with a 0.75mm 2-pin plug design to elevate audio quality. It also features slicon ear tips with optimized physical structure to reduce teeth clenching noise. The slow rebound memory sponge material enhances wearing comfort and provides excellent noise reduction and sound isolation effects.


The KZ Castor In-ear monitor features integrated injection molding process to create a high-precision integrated acoustic filtering nozzle. This advanced manufacturing technique allows for the accurate and intricate printing of complex internal structures within the earphone cavity. The tolerance range of 3D printing is around 0.1mm, but the precision of KZ Castor internal support structure is around 0.01mm. As a result, the KZ Castor achieves efficient and uniform sound reproduction, enhancing the overall audio quality and providing a more immersive listening experience.


This IEM features an in-line microphone that is compatible with standard mobile phone calls. It also has in-line media controls that allows for call pickup/disconnection, short press for pause/play, press-twice to switch songs, etc.


It provides an excellent wearing experience with prolonged comfort and no fatigue. The iem is designed to have a secure fit, ensuring they do not fall out. The ergonomic design promotes a natural fit, minimizing discomfort even during extended use. With these features, KZ Castor is a perfect choice for everyday wear.


Product Name
KZ Castor
Harman Target Version: 31-35ΩHarman Target with Improved Bass Version: 16-20Ω
Harman Target Version: 105±3dB Harman Target with Improved Bass Version: 103±3dB
Plug Type
Pin Type
Cable Type
Flat transparent black cable
Cable length
Available In
Mic/No Mic

Box Content

    What will you get
  • KZ Castor Earphones
  • Silicone Ear Tips
  • Silver-Plated Cable
  • Tuning Lever
  • Instruction Book
  • Eco-Friendly Packaging
  • Note: Memory Foam ear tips does not include in box



Don't worry, KZ - Castor IEM comes with a 1 Year warranty against manufacturing defects. We guarantee that every product on Concept Kart is genuine and backed by the Manufacturer's warranty.

Read more about Concept Kart's warranty policy.

Shipping Policy


We usually ship orders on same day if ordered before 2 pm or within 24 hours if ordered later (except on holidays/sunday, where processing times may be higher) from one of our domestic warehouses based out of Delhi. It normally takes around 1 to 5 business days for delivery. We use premium service partners such as Blue dart, DTDC and Delivery for faster and reliable service. A tracking number will be provided upon shipment.

In very rare cases when order is not received after 10 business days of shipment (extended by number of days when the govt. Restricts movement of goods due to factors such as coronavirus pandemic), please contact us and we will provide you a support.

Customer Reviews

Based on 58 reviews
R. (Chennai, IN)
Good bass

KZ's new design much appreciatable for two dynamic drivers bonded together,good bass,mids are laid back,good treble,no harshness,switches slightly noticeable,over all good iem for 1500 but I like kz ESX most for its thump and sub bass extension

Thank you so much for taking the time to leave us this amazing review.

Love Lohar (Jaipur, IN)
Best balance and details under 2000 Rs.

Everything is perfect whether it's details, balance or bass texture. Very neutral nothing much to complain about it. To be honest, I love it ❤️
Thanks ConceptKart

Thank you so much for taking the time to leave us this amazing review.

P.P.k. (Chennai, IN)
Good but I get wrong product

I ordered black veriont but I get silver veriont and that don't have foam bots

Arnab ghosh (Durgapur, IN)
V- shaped, good choice to bass heavy songs

As a budding audiophile, I've begun to immerse myself in the world of music, discovering through Apple Music the intricacies of sound profiles, from the detailed (neutral) to the bass-heavy and detailed (V-shaped), and even the warm (warm-curved) tones in between.

Currently, I own two entry-level In-Ear Monitors (IEMs): the Salnotes Zero and the KZ - Castor Harman Bass Improved. I've recently acquired the KZ Castor, which contrasts starkly with the Salnotes Zero, yet I have no regrets about selecting it among the sub-2k budget IEMs. The Salnotes Zero excels with rock, metal, and any song where detail is paramount, as found on Apple Music. Conversely, the KZ Castor rounds out my music preferences with its V-shaped tuning, making it ideal for EDM, electronic, bass guitar, and any genre that benefits from a bass-forward or warm sound signature.

I had the opportunity to experience the QKZ × HBB for about two to three months, courtesy of a friend. This left me uncertain about which model to purchase. However, I've concluded that both are commendable in terms of bass response, and one wouldn't regret acquiring any of the following IEMs: QKZ × HBB, 7hz Salnotes Zero (neutral-detailed) / Zero 2 (detailed with slightly more bass than the Zero), Truthear Hola (warm), and the KZ - Castor Harman BASS Improved Version. While there may be other IEMs that perform well, I haven't had the chance to listen to them and therefore cannot offer a comparison.

Hi there! Thank you for taking the time to leave such a detailed review of our KZ - Castor IEM. We're so glad to hear that you're enjoying the V-shaped sound profile and finding it to be a good choice for bass-heavy songs.

S.L. (Bhilai, IN)
Impressive Sound and Comfort with KZ Castor Bass!

The KZ Castor Bass truly delivers on its promises. From the moment I unboxed it, I was captivated by its sleek design and solid build quality. Despite initial concerns about its bulkier design due to the tuning keys, it surprisingly fits snugly in my ears without any discomfort. (I use the small ear tips since they fit better in my ears, giving me passive noise cancellation)

Sound-wise, it's a revelation. The level of detail and clarity it offers is outstanding. Whether I'm listening to my favourite tracks or diving into a podcast, every nuance is brought to life with remarkable precision. Plus, the bass response is punchy and powerful, adding depth to the listening experience. I am tuning all keys up as a personal preference.

However, there's a slight hiccup. While the packaging claimed to include memory foam ear tips, mine came with silicon tips instead. It's a minor inconvenience, but worth noting nonetheless.

One tip I've found useful is to listen at lower volumes. Despite its capability to crank out high volume levels, I've noticed that the Castor Bass truly shines when listened to at a moderate volume. It allows for a more balanced and nuanced sound reproduction.

Overall, the KZ Castor Bass has exceeded my expectations. Its combination of stunning design, detailed sound, and comfortable fit make it a standout choice for anyone in the market for quality in-ear monitors. Highly recommended!

Thank you for taking the time to share your experience with the KZ Castor IEM! We're delighted to hear that you are impressed with its sound quality and comfort. We apologize for the mix-up with the ear tips and will make sure to address this with our team. Thank you for the helpful tip about listening at lower volume levels for a more balanced sound. Your recommendation is greatly appreciated. Enjoy your Castor Bass and happy listening!