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)
$24.99 Original price was: $24.99.$23.74Current price is: $23.74.
Price: $24.99 - $23.74
(as of Feb 14, 2026 16:40:08 UTC – Details)
Product description
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Dual Dynamic Drivers Configuration, Seeking Deeper Bass 

4 tuning switches, achieve personalized customization 


Gray Color – More Shocking Bass Version
Customized for audiophiles seeking deeper bass, based on the harman FR curve, enhancing low-frequency sensitivity and dynamic performance, achieving an unstoppable low-frequency experience.

Silver Color – Harman Target Version
The harman FR curve as its tuning target, built upon the acclaimed harman FR curve within the hifi community, whether it’s in terms of parameter performance or sound perception, it outperforms most IEM.

Comfortable Wearing These IEMs deliver an extremely fun and engaging experience
with clean, crisp notes throughout the full spectrum.They come with 3 pairs silicone eartips which provide both comfort and effective noise isolation, enhancing the listening experience.


IEM Headphone from Yinyoo Audio
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Customer Reviews
4.2 out of 5 stars 388
4.3 out of 5 stars 4,507
4.2 out of 5 stars 2,036
4.4 out of 5 stars 159
4.4 out of 5 stars 18,977
4.4 out of 5 stars 1,617
Price
$22.79$22.79
$13.99$13.99
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Drivers Per Side
2DD
1DD
1DD
1DD
1BA 1DD
1DD
Connectivity Tech
Wired
Wired
Wired
Wired
Wired
Wired
Cable Feature
Detachable
Detachable
Detachable
Undetachable
Detachable
Detachable
PIN Type
QDC PINS
TFZ PINS
TFZ PINS
X
TFZ PINS
TFZ PINS
Manufacturer
KZ
CCZ
CCZ
KBEAR
CCZ
CCZ
【Harman Target Version】kz castor musicians in ear monitors earbuds with the harman FR curve as its tuning target, built upon the acclaimed harman FR curve within the hifi community, whether it’s in terms of parameter performance or sound perception, it outperforms most IEM.
【Harman Target with Improved Bass Version】kz castor iem, customized for audiophiles seeking deeper bass, based on the harman FR curve, enhancing low-frequency sensitivity and dynamic performance, achieving an unstoppable low-frequency experience. Simultaneously, the mid and high frequencies seamlessly align with the harman FR curve, experiencing unprecedented and breathtaking super bass.
【Tunable Sound-Create 16 Different Audio Profiles】Innovative stacked dual-dynamic drivers structure design. 1*10mm dual magnetic dynamic driver, 1*8mm dynamic driver, and kz castor wired in ear earphones is equipped with professional acoustic filters that support 2-stage adjustments for low frequencies and 2-stage adjustments for high frequencies. users can fine-tune their sound preferences to create 16 different audio profiles based on their preferred music styles.
【Higher Precision Integrated Injection Molding Process than 3d Printing】KZ castor in ear monitor, the precision of the integrated injection molding process is theoretically more than 10 times higher than traditional 3d printing technology. the tolerance range of traditional 3d printing is around 0.1mm, while the precision of castors internal support structure is around 0.01mm.
【Noise-isolating Silicone Eartips 】 KZ castor in ear monitor headphones utilizes premium Silicone eartips with optimized physical structure, effectively block external sound and provide s soft and comfortale fit that conforms to the ear canal. they are designed with ergonomic considerations in mind and are accompanied by three sizes of ear tips to accommodate different ear shapes.







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