Description
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Unlock a premium listening experience with the KZ Castor In-Ear Monitors, equipped with a powerful dual dynamic driver setup—a 10mm magnetic bass driver and an 8mm mid-high frequency driver stacked for full-spectrum sound.
Choose between two factory tunings:
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Harman Target Tuning for balanced, studio-like sound
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Bass-Enhanced Version for deep, punchy lows ideal for EDM and pop
Built with a 4-switch tuning system, the Castor lets you explore up to 16 personalized sound profiles, adapting to your mood, genre, or gear. Its ergonomic shell design fits snugly and comfortably for long sessions, while the detachable OFC (Oxygen-Free Copper) cable ensures durability and signal purity.
Perfect for audiophiles, commuters, gamers, and anyone who demands versatile, high-resolution audio on a budget.
Key Features
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Dual dynamic drivers: 10mm + 8mm for layered, rich sound
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Two tuning options: Harman Target (neutral) and Bass-Enhanced
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4-switch adjustable tuning system with 16 profiles
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Wide frequency response: 20Hz – 40kHz
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High sensitivity: 103–105 dB SPL
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Low impedance: 16Ω to 35Ω (depending on switch mode)
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Ergonomic resin shell for a secure and comfortable fit
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Detachable OFC cable with optional mic version available
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Comes with silicone and memory foam eartips for noise isolation
FAQs – KZ Castor IEM
1. What's the difference between the two versions?
One version follows the Harman tuning curve for a balanced sound. The second boosts the bass region for a more powerful low-end response.
2. How does the tuning system work?
There are four physical tuning switches on each earpiece. You can toggle these to customize the output—adjusting bass, mids, or treble to your liking. 16 different combinations are possible.
3. Are they suitable for long listening sessions?
Yes. The ergonomic shell, soft tips, and lightweight design ensure a secure, fatigue-free fit for extended use.
4. Can I use these for gaming or calls?
Yes. The optional mic version allows for clear voice input, and their immersive soundstage makes them great for gaming too.
5. Do they need a special DAC or amp?
No. These IEMs are easy to drive with smartphones, laptops, or any standard audio source, though a DAC can enhance clarity further.
6. Do they isolate outside noise well?
With the provided memory foam and silicone ear tips, they offer excellent passive noise isolation for most environments.
7. Are they worth the price?
Absolutely. With high-end features like dual drivers, tuning switches, and detachable cables, the KZ Castor offers tremendous value for its price point.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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