KZ APTX-HD Bluetooth Headphones Cable,Wireless Sport Bluetooth Earphone Headset Extension Cable Replacement Earbud Cable with 2 Pin 0.75mm for KZ ZST ZS10 AS10 BA10 AS06 ES4 ZSR Earphone Accessories

These work well, are easy to use, and do provide good sound quality from the source when connected. Unfortunately, the noise floor is much too high to be acceptable. Noise floor is that static-ish noise you hear when you turn speakers up really high when nothing is being played through them. Usually you can turn down the speaker volume and raise the input volume to compensate for this but turning down the volume on the wire's controls does nothing to lower the noise floor on this product. It's the same volume no matter what and it's VERY noticeable. It will get drowned when playing music but you will absolutely hear it if you play music at low volumes.There are a lot of little annoyances that I can deal with when it comes to audio products and noise floor is one of those things that seems small but affects sound quality so it becomes a huge issue when dealing with audio products. And, unlike sound quality which is subjective, a high noise floor will be noticable by everyone and is universally not a good thing. Unfortunately, I will not be using this with my AS10s and continuing my search for a B pin Bluetooth wire to use with them.

I couldn't buy this cable from the KZ store in Aliexpress because it doesn't ship here. These seem to be offical, especially because of the same specs and design in the KZ store.Only issue I have is the white noise. It is really noticeable in lower volumes, drowning out whatever you are listening to, making it sound static-like. From medium to high volumes, it's perfect. The drivers I am using are not the cause of the white noise, as I have used them with the cable that comes with them.Aside from that, all other functions work like a charm. I will update after some time using them.Update: The concept for a piece of technology like this is amazing, but this product fails to meet expectations when it comes to that annoying white noise sound.

4/11/22 Update:I’m lowering my review from 4 stars to 3 stars because the battery life reporting is so bad it’s actually unbelievably annoying and makes it very difficult to know when they need to be recharged. They report 100% battery life for about 80% of their play time, then drop to 80% for 15% of the play time, but go from 60% to completely dead in a matter of minutes. And though the overall battery life is not terrible, it just makes the Bluetooth battery reporting feature almost completely useless and I end up charging them way more than I probably need to because I don’t want to risk them dying randomly. It’s like driving my dad’s old F-150 that doesn’t have a working fuel gage: you can run out of juice at any time and therefore have to stop to get gas way more often than you would normally need to.Original review:I got so sick of my music cutting in and out with truly wireless earbuds. I tried Sennheiser Momentum 2, AirPods Pro, Soundcore Liberty Pro 3, And Lypertek Tevi, among others. All cut out in highly saturated Bluetooth areas like the gym, library, or other places. So I switched to a wired IEM for a while, the CCA-C10. But wires are just so tedious after experiencing Bluetooth!Enter this product. Works incredibly well!! I don’t notice a difference in sound quality between the wire and Bluetooth. There is some white noise, and I wouldn’t recommend this for those who will be using volumes lower than 30%- too much white noise. This is to be expected with highly sensitive IEMs. But for higher volumes and/or physical activity, the white noise is completely unnoticeable, and, best of all, NO CUTTING IN AND OUT!! Rock solid audio, not even a single hiccup. Plus, the reception signal seems to be very good, I’m able to walk around my entire apartment without my phone and the audio doesn’t cut out in the slightest.You might be asking why I didn’t rate it 5 stars. A few reasons:1. Microphone is terrible. Way too quite, nobody can hear what I’m saying.2. Loud click in right ear when turning on, quite painful and annoying.3. Cable is too long. To fix this, I wrap the cable once around my neck, that seems to make the length just right and increases stability for high intensity workouts.4. Voice prompts are so cringe. Always have hated voice prompts. Just give us a dingaling or whatever, nobody said you could talk to me lol5. Build quality is questionable. The heat shrink tubing around the ear was a little wonky, I had to reshape using a lighter to better fit my ears, and the wire feels quite thin and flimsy. I promise I’ll update this review if/when it breaks. No update = still going strong. For the price, I would expect this would last about a year of daily use. Working out can be pretty hard on tech, so we’ll see.

First of all....sounds great. Easy to sync. Battery seems to last a decent # of hours. Hooks up great to my APTXHD and definitely hear difference playing through Amazon Music HD. With this an a budget IEM, you can have phenomenal sound for like $60-85 that many named headphones can't match.Downside....buttons are very hard to press. I don't press buttons often,, but when I try to double-click, i often get the wrong action happening. Cord is a bit long for me...lots of dangling going on.Not as slick as cordless wireless buds.....but overall I think this value is great!

I purchased these for the AptX HD support, but the sound quality is so poor that there's really no point.As other reviewers have mentioned, there is a constant and very noticeable hissing noise when these are on. Additionally they sound muddy compared to using the same IEMs wired.Mine came with the wires unevenly curved around the ears - the right one isn't curves as sharply and stands up, making the right side more likely to pull out of your ear when the wire is disturbed. Quality control is poor.All that said, they're convenient and podcasts sound fine but I'm going to keep shopping for something better for music over Bluetooth.

I can't use these as this is not a normal 2 pin connector. I wish I would've known that before I bought them. The pins are recessed slightly into the plastic with a weird proprietary securing wall. They look semi normal in the picture but I assure you they are not. It is almost like a QDC 2 pin.

I've used mine a few times at the gym and they're perfect for that! I have no issues with noise, and mine are powerful enough that I don't need full volume. The two pieces that goes around your neck takes a little to get used to, but a small inconvenience I'd say. Not sure about the battery yet since I only use it for like 2 hours and then charge it back up. I'm buying a second one soon for would and that'll be about a solid 6 hours of run time and I'll see if it lasts that or not. I'll update later if I have any issues or whatever.