A Wonderful Bluetooth accessory for KZ Earphones! - KZ AZ09 Review

INFO UPDATE! Some users have mentioned they have had some connectivity issues and dropouts when using the AZ09. While I have not experienced this myself (... yet) I have tried to force it to lose connection by using various other WIFI and Bluetooth devices to cause interference and still it seems to work fine. If I do notice any connection issues I'll be sure to provide updates. It should also be noted that KZ also released the AZ09 PRO edition which includes a Qualcomm QCC3040 chip stable connections, so if you're worried about connectivity maybe go for the PRO edition to be safe.
Updated: 18/11/2021 5:00pm

This accessory to KZ earphones is fantastic! Get one if you already own a pair of KZ Earphones with B or C pin connectors.

0:00 - Intro
0:33 - Unboxing
1:09 - Price
1:19 - Key Features
1:38 - What's Inside?
1:47 - Battery Capacity
2:20 - Ear Hooks
2:35 - Charging Case
3:03 - Attaching ZSX Earphones
3:39 - Plugging in to Charge
4:00 - Wearing the AZ09
4:10 - Button Controls
4:22 - Siri and Google Assistant
4:52 - Changing Earphones
5:04 - What I didn't like
5:25 - The AZ09 Pro Edition
5:55 - Final Thoughts

[See_Sharp]

3:06 Right receiver with Left earbud. Good thing you corrected it.

[neogenesus]

KZ has released the new AZ09 pro not too long ago and the new one is miles better than the old AZ09, KZ basically fixed almost all the complains from the old AZ09. The pro version comes with the newer Qualcomm 3040 chip which fixed the connection issue and dropouts that plaguing the old AZ09, has AptX codec (higher bitrate), 8 hours of battery life in a single charge, has gaming mode for lower audio latency and full power mode for an even louder volume.

[MarloneNightFrost]

Thank you for the review, I was planning to buy those but I'm waiting for a good review on the AZ09 Pro version. Keep it up and thank you!

[lumenaticscavite]

Hello. How about the quality of mic? In call and for gaming, latency test? Can you review? Thank you

[KrazyShark]

Got one yesterday. The noise is too noticeable on the left one on mine which is unfortunate. 200% recommend to just invest in the new version.

[bdxomaticYT]

How are the products now? And which ear tips are u using with kz zsx? I have a kz zsx but the trebel is not clear enough and noisy. Do you have any suggestion? And I wanted to upgrade the copper cable. Should I go for the Az09 or 16core silver cable for improving sound?

[danielsan]

I've seen a lot of reviews saying that the Bluetooth connection is spotty at best. Apparently, it requires a direct line of sight of the source (i.e. phone) for it to have a clear connection. Plenty of people have complained that putting their phone in their pocket or moving their head can disconnect one or both of the IEMs. Have would you rate the Bluetooth connection when in use? Have you experienced the aforementioned issues?

[GedasSt]

Thanks for review.
It is Possible to use only one (left or right) earphone for phone calls ?

[nivektek]

It is Compatible Any Kz Models or iem brands?How many using hours & how many hours to charge the kz Bluetooth Accessory?Where you can buy online or physical store?✌️✌️✌️✌️

[nivektek]

Any kz model or iem compatibility for that kz Bluetooth accessory?How many battery hours to use & if you charge it how many hours?where you can buy it online or physical store?✌️✌️✌️✌️

[timpullen]

Bluetooth often has a delay. Are these useable live or is there a delay between note played and hearing the note?

[chewkenghong]

Az09 supports aptx codec?
great review.

[sandeepkalsy]

Do you recommend them for running long distance? Would they hold well on the ear?

[mahib]

After a year how is it ?
Thinking of buying this. I'm using kz zsn Pro X . Can I play games with this they said is has 40ms latency.

[saltspice]

does the light keep on blinking everytime ?

[lizclusivecoverph]

Can you use it for in ear monitor system also?

[LONE_PUPPY]

I own 2 pairs. Their bluetooth connections are both VERY unstable..it is a realtek chip model. Cheap gadget. Better to buy a new pro model, which is a qualcomm chip one.

[JonPYbanez]

thanks for triggering my google home speaker with your voice command

[jairc]

what earphone of KZ you recommend me friend to connect with this?

[harish]

Hi, can you please tell me will this support my edx pro ???