KZ Castor Pro In-Ear Monitors
KZ Castor Pro In-Ear Monitors
Drummers · bass players · anyone who needs the low end in their ears
Pickup currently not available
Free shipping across New Zealand · dispatched next working day from Mount Maunganui · shipping & returns
TUNABLE DUAL-DRIVER IEM
Shape the sound around your set.
The KZ Castor Pro combines two 10 mm dynamic drivers per earpiece with four physical tuning switches. It delivers real low-end movement and lets you adjust the balance without an app, battery or digital processor.
DUAL 10 MM DRIVERS
Dedicated dynamic drivers split low-frequency work from mids and highs for weight without losing the mix.
FOUR TUNING SWITCHES
Adjust bass and upper-frequency balance directly on each shell to suit the room, player or programme.
SECURE + SERVICEABLE
Over-ear routing, passive isolation and a replaceable 0.75 mm two-pin cable suit regular stage use.
Choose your edition
The shell colour identifies two genuinely different factory tunings—select the sound as well as the look.
UNDER THE SHELL
Two 10 mm dynamic drivers, with the workload divided
One dynamic driver concentrates on low frequencies while the second covers the rest of the range. KZ's electronic crossover coordinates them, giving kick and bass real movement without asking one diaphragm to reproduce everything.
THE RESPONSE, MADE USEFUL
Choose the starting curve, then tune it on the shell
Harman Edition starts from the more balanced baseline. Bass Up raises the low-frequency region for drummers, bassists and anyone who wants stronger physical cues. The four shell switches then let you make smaller bass and upper-frequency adjustments.
Manufacturer measurement shown for comparison. Ear-tip seal, fit, ear anatomy and the source device all affect the response you actually hear.
QUICK ANSWERS
Frequently asked questions
What is the difference between Harman and Bass Up?
Silver Harman starts from a more balanced response. Black Bass Up adds stronger low-frequency emphasis.
Do the tuning switches need an app or power?
No. They are physical controls on the shells. Use the supplied tool and set both earpieces the same.
Can I use Castor Pro with a wireless IEM system?
Yes, with most bodypacks that provide a standard 3.5 mm stereo headphone output.
Does it have active noise cancellation?
No. Isolation is passive and depends on choosing an ear tip that seals correctly.
Prefer hybrid-driver detail? Compare the KZ ZS10 Pro X. For fit and safe setup, read the Band Factory IEM fit guide.
- Stocked in Mount MaunganuiDispatched the next working day
- Free shipping across New ZealandTracked courier, 1–3 working days
- 12-month warrantyPlus your full Consumer Guarantees Act rights
- Pickup available40 Hewletts Road, by arrangement
Specifications
| Drivers | 2 × 10 mm dynamic drivers (per side) |
|---|---|
| Total driver count | 4 across both sides |
| Impedance | Harman 22–40 Ω · Bass Up 16–22 Ω |
| Sensitivity | Harman 101–104 dB · Bass Up 100–103 dB |
| Frequency response | 20 Hz – 40 kHz |
| Sound signature | Harman: neutral and honest · Bass Up: weighted low end |
| Cable | Detachable high-purity oxygen-free copper flat cable |
| Cable length | 120 ± 5 cm |
| Connector | 0.75 mm 2-pin |
| Plug | 3.5 mm |
| Inline microphone | No — clean monitoring cable, as you want on stage |
| Best for | Drummers · bass players · anyone who needs the low end in their ears |
In the box
- 1 × pair KZ Castor Pro earphones
- 1 × detachable oxygen-free copper flat cable (0.75 mm 2-pin, 3.5 mm)
- 3 × pairs silicone ear tips (S / M / L)
- 1 × user manual
Get the seal right first
Almost every complaint about thin or bass-light in-ears is a fit problem, not a driver problem. Work through the three supplied tip sizes until the low end arrives and the room drops away, and wear the cable looped over your ear rather than straight down. If none of the tips seal, foam tips usually will.
Read the two-minute fit guide →