---
product_id: 630372554
title: "KZ ZST Bluetooth IEM 5.4 Module IEM Bluetooth Adaper Wireless 2pin 0.78MM for ​KZ ZSTX/AS10,Moondrop CHU II/Aria/Blessing"
brand: "ez ear"
price: "AR$119142"
currency: ARS
in_stock: true
reviews_count: 13
url: https://www.desertcart.com.ar/products/630372554-kz-zst-bluetooth-iem-5-4-module-iem-bluetooth-adaper
store_origin: AR
region: Argentina
---

# 0.78mm & 0.75mm pin fit Bluetooth 5.4 tech 42h total playtime KZ ZST Bluetooth IEM 5.4 Module IEM Bluetooth Adaper Wireless 2pin 0.78MM for ​KZ ZSTX/AS10,Moondrop CHU II/Aria/Blessing

**Brand:** ez ear
**Price:** AR$119142
**Availability:** ✅ In Stock

## Summary

> 🎧 Cut the cords, not the vibe — wireless freedom for the discerning audiophile!

## Quick Answers

- **What is this?** KZ ZST Bluetooth IEM 5.4 Module IEM Bluetooth Adaper Wireless 2pin 0.78MM for ​KZ ZSTX/AS10,Moondrop CHU II/Aria/Blessing by ez ear
- **How much does it cost?** AR$119142 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/630372554-kz-zst-bluetooth-iem-5-4-module-iem-bluetooth-adaper)

## Best For

- ez ear enthusiasts

## Why This Product

- Trusted ez ear brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Next-Gen Bluetooth 5.4:** Experience ultra-stable, low-latency audio with AAC codec support for crystal-clear, hi-fi sound that keeps you ahead in calls and gaming.
- • **All-Day Listening Power:** Enjoy 6 hours per charge plus a compact 800mAh case delivering up to 42 hours of uninterrupted music—stay unplugged and unstoppable.
- • **Seamless Wireless Freedom:** Transform your wired IEMs into sleek wireless earbuds in seconds with gold-plated plug-in pins—ditch cables, embrace mobility.
- • **Dual-Host & Individual Use:** Use each earhook independently or together with dual-channel transmission for faster audio sync—perfect for multitasking pros.
- • **Featherlight Comfort & Control:** At just 4.5g per earhook, wear all day with zero pressure and control calls, music, and volume effortlessly via a single multifunction button.

## Overview

The KZ ZST Bluetooth IEM 5.4 Module is a cutting-edge wireless adapter designed for select KZ and Moondrop IEMs, featuring Bluetooth 5.4 for superior connection stability and AAC codec for high-fidelity sound. It supports both 0.78mm and 0.75mm pin types, offers up to 6 hours of continuous playback per charge, and an 800mAh charging case that extends total usage to 42 hours. Lightweight and ergonomically designed, it enables dual-host mode and individual earhook use, making it ideal for professionals seeking premium wireless audio performance without sacrificing comfort or control.

## Description

The plug-in design with gold-plated pins makes the earphones beacome wireless earphones in seconds,getting rid of the shackles of cables.
KZ AZ09-Professional sound quality comes from the chip and the dual protection of AAC advanced coding ability,bringing natural and clear sound.
KZ AZ09 operation is very simple,just move your finger.You can easily achievea variety of requirements.
Whether in daily life or work and play, it can meet your usage needs and enjoy the infinite beauty of music.
KZ AZ09 Bluetooth ear hook can be used for about 6 hours in a fully charged state,and the charging case can last 8-10 times.
Bpins Bluetooth Cable for: KZ ZST, ZST-X, ZSTX, EDX, ZSR, AS10, ED12, ES3, AS06 IEM
C Pins Bluetooth for :KZ ZSN/ZSN PRO/ZSN PRO-X/ZS10 PRO/ZS10 PRO X/EDX PRO/AS16/AS16 PRO/PR2/ZEX PRO/AS12/AS24/DQS,CCA C12/C10 /CRA

## Features

- 𝐁𝐫𝐨𝐚𝐝 𝐂𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐢𝐥𝐢𝐭𝐲- KZ Bluetooth iem adapter provides B-pin 0.78MM/C-pin 0.75MM choices. B-pin 0.78 MM suitable for KZ ZST/ZST-X/EDX/ZSR/ES4/AS10,CCA C10; C-pin 075MM for ZSN PRO/ZSN PRO-X/ZS10 PRO/ZS10 PRO X/ZS12 PRO X/ZS10 PRO 2/EDX PRO/CASTOR/ZAR/PR2/ZAX/AS24/AS24 PRO/ZAS/ZS-X,CCA CRA/C12
- 𝟓.𝟐 𝐁𝐥𝐮𝐞𝐭𝐨𝐨𝐭𝐡 𝐌𝐨𝐝𝐮𝐥𝐞-The iem wireless adapter adopts 5.4 technology which offers you an unparalleled audio experience with faster transmission speed, stronger connection stability. TWS high-definition bluetooth upgrade earhooks, support AAC audio encoding transmission. Hifi sound comes from double protection of chip guard and AAC advanced encoding capabilities.
- 𝐋𝐨𝐧𝐠 𝐁𝐚𝐭𝐭𝐞𝐫𝐲 𝐋𝐢𝐟𝐞-You can get 6 hours usage period per each charge. 800mAh charging case supports 7 times of recharging for both earbuds, gives up to 42 hours continuous music time. Keep you free from mobile charger with music all day!
- 𝐃𝐨𝐮𝐛𝐥𝐞 𝐇𝐨𝐬𝐭- Dual-channel transmission, lower delay. Earhooks can be used individually. The earhook features a high performance mode that gives you faster audio transmission speeds when you play games.
- 𝐋𝐢𝐠𝐡𝐭 𝐖𝐞𝐢𝐠𝐡𝐭 & 𝐏𝐨𝐫𝐭𝐚𝐛𝐥𝐞-Only 4.5g of each earhook, take in ear with 0 pressure. One multi-functional press button for calls, playing, pause and switch music.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Additional Features | Lightweight |
| Age Range Description | Adult |
| Antenna Location | Entertainment, Calling |
| Asin | B0D2GYJ7K8 |
| Audio Driver Type | Dynamic Driver |
| Battery Average Life | 6 Hours |
| Battery Charge Time | 1 Hours |
| Best Sellers Rank | #20,781 in Electronics (See Top 100 in Electronics) #137 in Wireless Audio Receivers & Adapters |
| Bluetooth Version | 5.2 |
| Brand Name | EZ EAR |
| Built In Media | Wireless Charging Case |
| Cable Features | Without Cable |
| Carrying Case Material | plastic_or_metal |
| Color | AZ09 |
| Compatible Devices | Cellphones |
| Connectivity Technology | Wireless |
| Control Method | Remote |
| Control Type | Media Control or Call Control or Volume Control |
| Controller Type | Remote Control |
| Customer Package Type | FFP |
| Customer Reviews | 3.9 3.9 out of 5 stars (155) 3.9 out of 5 stars |
| Earpiece Shape | Rounded tips |
| Enclosure Material | Plastic, Silicone |
| Frequency Range | 20 Hz - 20,000 Hz |
| Headphone Folding Features | In Ear |
| Headphone Jack | No Jack |
| Headphones Ear Placement | In Ear |
| Is Autographed | No |
| Item Weight | 0.06 Pounds |
| Manufacturer | EZ EAR |
| Model Name | KZ AZ09 B PIN |
| Model Number | KZ AZ09 |
| Noise Control | Sound Isolation |
| Specific Uses For Product | Calling, Entertainment |
| Style Name | Modern |
| Unit Count | 1.0 Count |
| Warranty Description | 1 year |
| Water Resistance Level | Waterproof |
| Wireless Technology | Bluetooth |

## Product Details

- **Brand:** EZ EAR
- **Color:** AZ09
- **Ear Placement:** In Ear
- **Form Factor:** In Ear
- **Noise Control:** Sound Isolation

## Images

![KZ ZST Bluetooth IEM 5.4 Module IEM Bluetooth Adaper Wireless 2pin 0.78MM for ​KZ ZSTX/AS10,Moondrop CHU II/Aria/Blessing - Image 1](https://m.media-amazon.com/images/I/61XEcAvICCL.jpg)
![KZ ZST Bluetooth IEM 5.4 Module IEM Bluetooth Adaper Wireless 2pin 0.78MM for ​KZ ZSTX/AS10,Moondrop CHU II/Aria/Blessing - Image 2](https://m.media-amazon.com/images/I/61cBxigJ1NL.jpg)
![KZ ZST Bluetooth IEM 5.4 Module IEM Bluetooth Adaper Wireless 2pin 0.78MM for ​KZ ZSTX/AS10,Moondrop CHU II/Aria/Blessing - Image 3](https://m.media-amazon.com/images/I/71cMRkuuCKS.jpg)
![KZ ZST Bluetooth IEM 5.4 Module IEM Bluetooth Adaper Wireless 2pin 0.78MM for ​KZ ZSTX/AS10,Moondrop CHU II/Aria/Blessing - Image 4](https://m.media-amazon.com/images/I/71QzsEmuBXL.jpg)
![KZ ZST Bluetooth IEM 5.4 Module IEM Bluetooth Adaper Wireless 2pin 0.78MM for ​KZ ZSTX/AS10,Moondrop CHU II/Aria/Blessing - Image 5](https://m.media-amazon.com/images/I/71WGExOLQ7L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great 👍🏻
*by  on Reviewed in the United States October 23, 2025*

I bought 2 of the kz az09 adapters, one for my castor pro’s and one for my zs10 pro’s. At $30.00 these bt adapters are perfect in my opinion.PROS: very good battery life, I use it regularly and charge the case once a week.Sound is really not much different than using a dac. Pretty low noise on these. The sound quality is AWESOME in my opinion.Good distance, probably about 30ft I’d say.Build quality is pretty solid. No issues as of yet.CONS: the only one I can think of is the case is a bit on the large size, and that’s it. Can’t really take away a star for that very minimal issue. 🤷🏼All in all I highly recommend the the az09 adapters, they do what they are supposed to do, and do it well.

### ⭐⭐⭐⭐⭐ Sound great, long lasting battery (Used 8 hours+)
*by  on Reviewed in the United States November 18, 2025*

Gotta have your own headphones! These work wonderful, if your on one device they have no issue connecting. I have issues with multiple devices. As I am switching between three throughout the day. But the sound quality is very clear. The different ear tips make it comfortable as you want.

### ⭐⭐⭐⭐ Good choice for wireless i'm on a budget.
*by  on Reviewed in the United States May 23, 2026*

These were a good choice and a great value for the money. I got a nice Fosi IM4 which is open back and removes the sound pressure. Also has better sound the the airpods. Overall this was a nice choice. even though its using aac over bluetooth I get really great sound when paired with lossless from the music services. The earpieces are light but fit securely over the ear and are so comfortable you hardly even notice them. I literally wear them for hours at time. I get good range of at least the 15m advertised with no sound degradation. My only ding here is that they are loud and depending upon the IEM that you use and the buttons are really small. The case is ok it does top off the devices after you take them off but with a 400mh battery it does either one good charge or a couple short ones before the case itself requires charging. You have be cautious the with charging in general, its a dumb circuit, your best bet is to get an old usb type A charger and use it rather than a smart or fast charger. Using the later will ruin the battery in the case and the devices. While they are sweat resistant, i would not consider them water proof.

## Frequently Bought Together

- KZ AZ09 Bluetooth IEM 5.4 Module IEM Bluetooth Adaper Wireless B-pin 0.78MM for ​KZ ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4
- Linsoul Tripowin Zonie IEM Cable, 16 Core Silver Plated Earphone Upgraded Cords, 1.25m SPC in Ear Monitor Cable for ZS10 PRO 2 AS10 PRO ZSN PRO X Wan’er SIMGOT EM6L(Recessed 2pin, 3.5mm)(Grey)
- InEar Monitor Case for IEM, in Ear Monitors, in Ears, Headphones, Earphones, Earbuds. Suitable for KZ ZS10/ZS10 Pro/ZSN/ZST/ZEX/AS10/AS16,YINYOO CCZ Melody - GIGCASE®

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-06-23*