What is the difference between the B pin and C pin models?

B pin: compatible with KZ-ZST/ZS10/ES4/ZSR , C pin: compatible with KZ-ZSN/ZS10PRO/ZSX

Are these only 2 pin or also mcmx? C pin option shows 2 pin still

They currently do not offer MMCX. They have talked about it and if and when they do I will purchase 2 sets. I have 3 of the 2 pin versions and they work great!

my headphones stopped playing in both ears after a few months no matter what device im using, is there a way to fix it or something?

Have you tried resetting , resetting gives your headset and devices a refresh. If that's dosen't work replace them they are under warranty.

How long is the battery for kz az09 supose to last if connect to a kz zsn pro or similar?

Sorry for late reply ,it can last 6-8 hours , it can contect to KZ zsn pro ,it is available for type C KZ products ZSX/ZSN/ZSNPRO/ZSN PROX/ZS10PRO/AS12/AS16 .not available for type B KZ PRODUCTS ZST/ZST X/ZS10/AS06/AS10/BA10/ZSR/ES4 ,hope it help you

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KZ AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin)

KZ AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin)

Product ID: 367109931

Details

Brand
KZ
Color
AZ09-B Black
Ear Placement
In Ear
Form Factor
On Ear
Noise Control
Sound

💧IPV5 water-resistant design

📶Bluetooth 5.2 stable low-latency

🔋6h earhook battery life, 7x charging case

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238 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
KZ
Color
AZ09-B Black
Ear Placement
In Ear

Description

🎧 Elevate your audio game—wireless freedom meets pro sound clarity!

GAME MODE READY - Activate ultra-low latency mode with a triple tap for flawless audio sync during intense gaming or video calls.
PRO GRADE SOUND CLARITY - AAC advanced audio coding and hybrid drivers deliver crystal-clear, natural sound with professional noise isolation.
SEAMLESS WIRELESS FREEDOM - Transform your wired IEMs into sleek Bluetooth 5.2 earhooks with instant 2PIN plug-and-play convenience.
ALL DAY POWER PORTABILITY - Enjoy up to 6 hours on a single charge plus 7 full recharges from the compact, magnetic charging case—stay unplugged longer.
ERGONOMIC COMFORT MEETS DURABILITY - Lightweight, ear-contoured design with oxygen-free copper silver-plated wiring ensures lossless audio and secure fit—even with glasses.

The KZ AZ09 Bluetooth 5.2 Upgrade Cable Ear Hook converts compatible wired IEMs into wireless earbuds featuring AAC codec support, IPV5 water resistance, and a robust 6-hour earhook battery life with a 7-charge portable case. Its ergonomic design and advanced RTL8753 chip ensure stable, low-latency connections ideal for professional use, gaming, and daily wear.

Specifications

ASIN	B0988YNTBS
Additional Features	water-resistant, wireless
Age Range Description	Adult
Audio Driver Type	Hybrid Driver
Battery Average Life	42 Hours
Best Sellers Rank	#121,554 in Electronics ( See Top 100 in Electronics ) #1,164 in On-Ear Headphones #5,148 in Earbud & In-Ear Headphones
Bluetooth Range	10 Meters
Bluetooth Version	5.2
Brand	KZ
Brand Name	KZ
Cable Features	Without Cable
Carrying Case Battery Average Life	42 Hours
Carrying Case Color	Black
Carrying Case Weight	50 Grams
Color	AZ09-B,Black
Compatible Devices	Bluetooth-enabled devices
Connectivity Technology	bluetooth
Control Method	Touch
Customer Reviews	4.0 out of 5 stars 541 Reviews
Ear Placement	In Ear
Earpiece Shape	Rounded Tip
Enclosure Material	Copper
Form Factor	On Ear
Frequency Range	20 Hz - 20,000 Hz
Headphone Folding Features	On Ear
Headphone Jack	No Jack
Headphones Ear Placement	In Ear
Headphones Jack	No Jack
Is Autographed	No
Item Weight	55 Grams
Manufacturer	yuanze
Model Name	AZ09
Model Number	AZ09-B
Noise Control	Sound Isolation
Number of Items	1
Specific Uses For Product	Professional
Unit Count	1 Count
Water Resistance Level	Water Resistant
Wireless Technology	Bluetooth

Reviews

O**S

27.07.2021

A**W

12.04.2025

C**B

31.12.2021

D**E

25.05.2021

J**L

6.07.2021

P**S

14.01.2022

T**E

11.08.2021

C**Y

30.06.2022

B**O

11.06.2022

C**N

12.08.2021

M**C

23.01.2022

A**O

17.09.2021

T**L

20.06.2022

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238 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Poland.

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