


The KZ ZEX Pro, also known as the CRN, is the result of a collaboration between Knowledge Zenith (KZ) and world-renowned audio reviewer Crinacle. Taking the original ZEX platform and refining it with balanced tuning, the ZEX Pro delivers a more accurate, smoother and detailed listening experience across the entire frequency range.
Co-Tuned by Crinacle
Developed with Crinacle’s input for a neutral-warm sound signature. Expect clean mids, smooth extended treble and controlled low-end that doesn’t overpower the mix.
Triple-Hybrid Driver System
10mm Dynamic Driver – Responsible for bass and lower midrange impact
Balanced Armature Driver – Adds clarity and articulation to vocals and instruments
Electret (electrostatic-style) Driver – Extends high-frequency detail up to 40 kHz
This combination creates a wide soundstage with impressive detail and separation.
Refined Sound – No Harsh Peaks
Compared to typical budget IEMs, the ZEX Pro reduces treble harshness, improves vocal texture and delivers a more natural tonal balance.
Premium Build & Ergonomics
Features a zinc alloy faceplate paired with a lightweight, skin-friendly resin shell — designed for long listening sessions or stage monitoring.
Detachable Silver-Plated Cable (0.75 mm 2-Pin)
Comes with a durable flat cable for low signal loss. Detachable design allows easy upgrades to Bluetooth or balanced cables.
| Specification | Detail |
|---|---|
| Drivers | 1 Dynamic + 1 Balanced Armature + 1 Electret |
| Impedance | 25 Ω |
| Sensitivity | 104 dB |
| Frequency Response | 20 Hz – 40,000 Hz |
| Connector | 0.75 mm 2-Pin (Detachable) |
| Plug Type | 3.5 mm |
| Cable Length | ±120 cm |
| Microphone | No mic version |
Musicians and performers using in-ear monitoring
Content creators, editors and streamers wanting accurate audio
Audiophiles looking for a tuned, balanced sound without harshness
Everyday listeners wanting premium sound at an accessible price
Audio Unbound ships to all locations within South Africa. At this time, we do not offer international shipping.
We partner with Shiprazor to ensure reliable and timely delivery of all orders.
Shiprazor is a leading logistics aggregator that connects us with a network of trusted courier partners. This allows us to offer competitive rates, efficient delivery, and real-time tracking updates to our customers. Once dispatched, your parcel is handled by the selected courier under their terms and conditions. For delivery-related issues, please contact the respective courier directly using your waybill number.
Delivery typically occurs within 2-3 business days after dispatch. Express shipping is not available at this time.
Tracking details will be sent to you once your order is shipped. You can monitor your shipment using the waybill number through the Shiprazor tracking system.
If your order is delayed or you encounter any issues, please contact the courier responsible for your shipment directly using your waybill number. For further assistance, you’re welcome to reach out to us—our team is always ready to help.
All orders are carefully packed to ensure they arrive safely. Once packaged, they are securely handed over to a Shiprazor partner for delivery.
Our flat shipping rate of R35 applies to all areas, including remote locations.
We aim to process and dispatch orders quickly, even during peak holiday seasons. However, slight delays may occur during these times.
For further inquiries please contact: info@audiounbound.co.za
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at info@audiounbound.co.za. Please note that returns will need to be sent to the following address:
Shop 75, Glendower Shopping Centre, 99 Linksfield Road
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at info@audiounbound.co.za.
Please inspect your order upon reception and contact us immediately if the item is defective, damaged, or if you receive the wrong item, so that we can evaluate the issue and make it right.
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
We will notify you once we’ve received and inspected your return and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days.
Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at info@audiounbound.co.za.
If more than 15 business days have passed since we’ve approved your return, please contact us at info@audiounbound.co.za.
04 Dec
Order placed
04 Dec - 05 Dec
Dispatched & In-Transit
07 Dec - 08 Dec
Delivered
