AZ09Pro Bluetooth V5.2 aptX/TWS + Earbuds Hook with Mic Support/40 Hours Playback and APP Control for Standard 0.75/0.78mm 2PIN Connector (C PIN, Black)

Solid. Really appreciate that I now have the choice to go wired or wireless and have pretty good sound quality either way. And for a reasonable price. I also like the ear hook because other true wireless buds tend to slowly slip out and fall. Microphone quality isn't great, but not terrible. I tried using the high performance mode along with a wireless headset dongle on my PS5 and I could barely notice any latency if I really looked for it. Nice little surprise. Only been a few months, so unsure how they'll do in the long run, but I'm very very happy so far. 👍

Disclaimer: I’m using this with an adapter so they are compatible with the Simgot EW300, which originally has a recessed 0.78 2-pin and will not work with the AZ09 without it. Sound quality is better than I expected for the cost of these Bluetooth adapters. I use them exclusively in “full power mode” which is accessible by pressing the button on the left side three times. It doesn’t seem to just be a higher gain mode, since it sounds noticeably more open and less muffled once activated. Not sure if this has an impact on battery life. Compared to wired, I feel that the slight loss in sound quality is an acceptable trade off for the convenience of wireless. I reduced it by 1 star due to the cheap construction of the case. The lid feels thin and flimsy. Does not inspire much confidence in durability but if you take care of it, it’ll be fine. Just don’t drop it! And one last thing to note: I tried the AZ09 initially with the KZ EDX (no adapter needed) and there was a noticeable hiss both when nothing was playing and in the background when music was playing. Oddly enough, that hiss went away when I switched them to the EW300. I’m not sure whether to blame the IEMs or the AZ09.

I have been looking and waiting for someone to develop a TWS for my good multi driver IEMs and KZ has delivered with the KZ-AZ09 Pro. It is also called the KZ-TWS HD Bluetooth upgrade ear-hook. It uses Bluetooth 5.2 with support for Apt-x formats as well as low latency. The two pin connectors work of course with most KZ IEMs but also with TRN such as my TRN ST5’s. My favorite pairing so far though are with the KZ ZAX 16 driver IEMs (pictured). I stream mainly through Amazon Music HD. These support up to 24 bit/48khz. The ZAX sound as good as any wired solution I have at the moment which is not saying a lot since I do not own anything that can play much higher than that wired. Performance wise, they drive the ZAX with ease and with good dynamics and details. People complain that the ZAX low end is not very good but I seriously beg to differ. With the proper sized tip and good seal the low end is deep, punchy and fast. No bloat in my opinion. The wireless connection has been very stable and has great range. Battery life is really all day with these. I did 8hrs with them straight and still had yet to get the low battery warning. The case charges them with a built in battery to charge them about 4 to 5 times before it needs a recharge. The case has a current usb-c connection for charging but does not support wireless charging. For the price of around $49 you get a great bang for your buck! Highly recommend!

Product worked well with my KZ ZS10 earbuds, but after about a month, the right Bluetooth got stuck in some kind of glitch where it kept fast flashing the blue light. Tried everything but could not get it to work again. Apparently a very common thing with this adapter if you Google it. I emailed support but never received a response. Save your money and buy an actual non-adapter Bluetooth earbuds.

Excellent adapters used with my higher end kz IEMs mainly for T.V. Used for almost 6 months until the Left side suddenly would drain in 15 minutes when connected to my LG OLED Tv and maybe a little longer life with my Pixel 6. Now left side is completely dead. Reached out via Amazon way past return period but feel I should have gotten a little more life out of them. Disappointed, because they are excellent when working. Manufacturer responded almost immediately and a new kz az09 was sent. They work perfectly . I am revising to 5 stars.

Had these to pair with my 7 driver ZN’s. Very comfortable. Sound was amazing. Unfortunately, I was getting a frequent signal cutting issue. Very annoying for this audiofile.

These are great. As wired headphones these are great and sound is very good. With the ability to go wireless, they are more versatile and still sound very good. Depending on how long you are away from your charger, the ability to go both wired and wireless at this price point is fantastic.

I must say this it's been a journey to even stumble across this kind of wireless setup. I've just started to understand the audiophile world of IEM's and sadly I've spent some money on headphones that were a little disingenuous with their advertising. Luckily, they gave me the opportunity to explore my options and in doing so I've found some phenomenal headphones in comparison to what've been using for entire my life and at a fraction of the price. The only problem I had... They weren't wireless. This bluetooth setup has changed that entirely and my only wish is that more people would know that there is so much more bang you can get for your buck! I had originally bought these for the YINYOO CCZ Warrior but those were a B-Pin Connection. I ended up buying the KZ Zax in Ear Headphones 7BA+1DD Hybrid which was a fantastic and pricer (still nowhere near what I paid for headphones in the past). These have been fantastic and I just want to point out it with it only being a couple weeks of use. I have yet to to have these die or even hear a low battery sound from them but the case has turned yellow on me twice in about three weeks. I've used my macbook charger to charge these in about 20 minutes and I feel like that's normally good for about a week. The mic quality is good but I don't think I can be heard well in noisy environments, not really a downside for me because that is not their main purpose for me but it may be for someone else. My only two cons are that at times (maybe 3-4 times over the past couple weeks) the connection cuts for about a few seconds when passing by what I'm assuming is strong bluetooth connections that interfere with my connection, definitely not a huge problem because this has happened to me before with other bluetooth devices but it is noticeable. The second con is more of wish haha, the case is a bit bulky and I've definitely struggled to find the opening side. Outside of that, I highly recommend these for anyone exploring their options in affordability and superior sound.

Meets expectations. Feels expensive at this price point.

Za Bluetooth device for KZ IEMs😅 tested for 6 hrs straight listening. I received without user manual. Feature like tripple press for left and right isn't specified. Triple press left for boost bass and treble. Triple press right for low latency connection when connected to pc and gaming.

Produto chegou no prazo. Excelente módulo bloethoot! Conectou de primeira. Muito estável no meu smartphone. Não notei perdas significativas na qualidade do som em relação ao fone quando cabeado.

My IEM became wireless with ease! This is a game changer. I've been using my IEM as I like it - wired amd wireless.

Lo que más destaca de este producto es su gran capacidad de batería, la batería con un uso continuo me ha durado entre 8 y 9 horas. La carga que te proporciona la caja también es buena y extiende la batería de los audífonos bastante, excelente producto.