• Vendor:

KZ Castor

Tuning Adjustable Dual-Driver IEM

  • The Harman Curve and Beyond
  • Revolutionary Dual-Dynamic Drivers
  • Deep and Authentic Bass
  • Customizable Audio Profiles
  • Ergonomic Design and Supreme Comfort
  • Unmatched Precision
Enhanced Black-STD
Enhanced Black-MIC
Regular price $15.99 USD
Sale price $15.99 USD Regular price

The Harman Curve and Beyond

The KZ Castor comes in two versions - Harman Target and Harman Target with Improved Bass. Both models offer a new standard in sound quality by closely adhering to the acclaimed Harman FR curve, a feat that sets them apart from even flagship models of other brands. This is particularly remarkable given the inherent challenges of acoustic tuning to meet the Harman curve specifications.

Revolutionary Dual-Dynamic Drivers

The KZ Castor is engineered with an innovative stacked dual-dynamic driver structure. One driver is solely focused on the 20-200Hz range to deliver powerful bass, while the other takes care of mid and high frequencies. The result is a harmonious, interference-free sound experience.

Deep and Authentic Bass

The Harman Target with Improved Bass Version pushes the envelope with a low-frequency drop of over 10dB in the 40Hz-300Hz range, dwarfing the performance of traditional headphones. This allows you to experience a super bass that is both unprecedented and breathtaking.

Customizable Audio Profiles

KZ Castor comes with professional-grade filters allowing for two-stage adjustments for both low and high frequencies. Users can personalize their audio experience with up to 16 different profiles to match their music preferences.

Ergonomic Design and Supreme Comfort

The earphones boast a top and bottom-stacked cavity design that strikes a perfect balance between sound quality and wearing comfort. Moreover, the thermoplastic slow rebound memory foam eartips ensure exceptional comfort and sound isolation.

Unmatched Precision

With an integrated injection molding process that is more than 10 times precise than traditional 3D printing, KZ Castor’s internal support structure boasts a staggering precision of around 0.01mm.

Inside the Box

  • 1 x KZ Castor
  • User Manual

1 Year Warranty

The KZ Castor Comes with a 1 year warranty on the In-Ear Monitors and 3 month warranty on the cable.

Technical Details

Frequency Range
Harman Target Version: 31-350ΩHarman Target with Improved Bass Version: 16-200Ω
Harman Target Version: 105±3dBHarman Target with Improved Bass Version: 103±3dB
Plug Type
Pin Type
Flat transparent black cable
Cable Length

Processing Time

This product is in Pre-order period. Pre-orders are provided for items that have not reached us and will take some time to be shipped out.

Pre-order Period: 1-2 week(s)


  • No cancellation of orders once ordered.
  • All orders to be shipped out sequentially.

Authentic Products

Linsoul Audio is the authorized distributor. All products are authentic and genuine.

Worldwide Free Shipping

We are located in China but send our products worldwide for free. T&Cs apply.

1 Year Warranty

We provide 1 year warranty for the all products except the cables and accessories*.

Online Support

Need help?, we are here to assist you
Monday - Friday: 09:00 – 18:00 (UTC+8)

Customer Reviews

Based on 3 reviews
really good for what it's worth

Bass edition tuning is really good if you're looking for something bassy while treble is still clear. My only complaint is that the mids are very recessed, but that's just my opinion, might not be that bad to others. Soundstage is average and timbre doesn't sound unnatural to me.


Really awesome.

Another budget banger

Probably overkill in the qty of cheap iems. Hard to overlook at the price - I prefer the bass version.

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30-Day Return Policy

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