Tuning Adjustable Dual-Driver IEM
Challenging all flagship products in the Hi-Fi industry with its formidable strength

Innovative Stacked Dual-Dynamic Drivers Structure Design
KZ Castor features a unique design with two stacked dynamic drivers. One driver is dedicated to producing frequencies around 20-200Hz for bass output, while the other diver handles mid and high frequencies. Through precise electronic crossover technology, these two divers work synergistically without interference between their frequencies. This enables KZ Castor to deliver powerful and energetic bass as well as stunning mid and high frequencies.

Harman Target with an Improved Bass Version
Customized for Audiophiles Seeking a Deeper Bass
Traditional earphone products often exhibit a drop of around 6-7dB in the frequency range of 40- 300Hz, and some earphone products marketed as Hi-Fi may even have a dip as low as 4- 5 dB. (Why do so-called Hi-Fi earphone products have less drop in the low frequencies? This is done to create a false sense of perception for users. By reducing the low frequencies, they aim to make the mid and high frequencies seem better, claiming it's for low distortion. In reality, this is all deception, as they can't technically enhance only the 100Hz frequency range without affecting other ranges.) This meager drop in low frequencies is like reducing the explosion of a nuclear bomb to the sound of a firecracker.

In contrast, KZ Castor boasts a drop of over 10dB in the 40Hz-300Hz range. Using the acoustic theory that 6dB represents a doubling, KZ Castor's performance in the low-frequency range has decisively outperformed traditional headphones in data.

Experience unprecedented and breathtaking super bass
When we set the bass frequency range to 20-200Hz, traditional manufacturers often attempt to adjust the sensitivity of this range by altering the unit's damping. The primary limitation here is that it's nearly impossible to boost only the 20-200Hz range without affecting the 300Hz range; excessive boosting in the 300Hz range leads to muddiness in the sound. However, with our KZ Castor's dual-driver design, one driver is dedicated to independently handling the 20-200Hz frequency range and fully amplifying the output within this range. This approach allows us to achieve an unparalleled and stunning bass experience.

Built-in professional-grade filters support adjustable low and high frequencies
KZ Castor has 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.

Turn on Switch 1 (Low frequency up to 1 level)
Turn on Switch 1+2 (Low frequency up to 2 level)
Turn on Switch 3 (Mid-high frequency up to 1 level)
Turn on Switch 3+4 (Mid-high frequency up to 2 level)
Turn on all switches (overall frequency up)

Top and bottom stacked cavity structure
KZ Castor adopts a top and bottom-stacked cavity design to strike a balance between sound quality and comfortable wearing, resulting in a smaller overall earphone size and improved comfort during wear.

A higher precision integrated injection molding process than 3D printing
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 KZ Castor's internal support structure is around 0.01mm.

Thermoplastic slow rebound memory foam ear tips
KZ Castor utilizes premium memory foam ear tips with optimized physical structure to significantly reduce teeth clenching noise. The slow rebound memory sponge material enhances wearing comfort and provides excellent noise reduction and sound isolation effects.

Product model: KZ Castor
Frequency: 20-40000Hz
Impedance: 16-20Ω
Sensitivity: 103±3dB
Plug type: 3.5mm
Pin Type: 0.75mm
Cable Type: Flat transparent black cable
Cable length: 120±5cm