KZ AS10 IEM Headphone, 5 Balanced Armature Driver KZ Earbuds Wired Earphone, Stereo HiFi in Ear Monitor Headphone Musician Headset Earphone with Detachable 2 Pin Cable(No Microphone, Black)

UPDATE to my UPDATE: I was so tempted to delete my first update... or this whole thing and start over out of pure embarrassment. I'm a professional and know sound, but apparently not my new laptop so much *insert eyeroll*. In short, since this whole review is far too long, I again stand by my original review on the 1st of 3 pairs of KZ AS10's; Incredible pair of iems. The 2nd pair, there was definitely something wrong with them. On stage and off there was a notable problem. The 3rd pair, I have admittedly not tried on stage yet (just got them today). I only plugged them into my newer laptop, and turned on Spotify. Although they were better than the damaged 2nd pair, something still wasn't right as I said. Something in the back of my brain was not sitting right with this however. I knew that my iems and other headphones I own could only be as good as limitations of the device they are operating from. Nothing I plugged into this laptop seemed to sound good. Didn't make sense. Its a new gaming ASUS FX705 laptop. The sound capabilities are going to better than others (one of the reasons I purchased it; for recording purposes). I fished, searched, Googled... and finally found it. Opened up the DTS HeadphoneX EQ and BOOM!!!! I jumped (iems were in my ears with music playing). Daaaang, now THAT's what I remember from the original pair of AS10 I bought! Superior stuff right there, y'all. So relieved. Let this be a lesson -- Your iems can only work their full potential if what you have them plugged into allows it. Now go plug these into something awesome and dance a little :)UPDATE: I stand by my original review of the (red) KZ A10's I purchased. Only problem is that I sold them to another musician because I decided I wanted the green color. No big deal, I thought. Sold them in about 5 minutes of posting, and purchased the new exact same pair in the green color. Received them quickly, plugged them in... but something wasn't right. That new pair seemed off and not as full as the pair I had just sold and used. I thought maybe I had gotten use to the first pair being completely burned in. so I burned the new pair in, used them on stage a few times, and finally had it. I took 'em home, plugged into my laptop and flipped on Spotify and realized the bass was not only missing as I suspected, but the top end was "raping my ears", as another reviewer so eloquently stated. I hoped that something was just defective with this pair, and sent them back... after ordering a $35 updated cord first to see if that helped. It did a smidge, but there was definitely something wrong with the ears themselves. I immediately ordered another green pair and they arrived quickly (Thank you, Amazon), plugged these new jobbies in and... yeah, No. The bass is missing again. Not nearly as bad as before, but for a 5 driver, its almost like the #1 & #2 bass drivers just aren't functioning, and seems to distort when any sort of bass hits. And, I don't mean like hip hop, thumping bass, just the normal range stuff. And once again, the high end also seems more abrasive than the original pair. Not sure what I am going to do at this point. I still think the separation and clarity of these iem's are amazing and unmatched to anything I've used before, however these bass and sharp treble negatives might outweigh the positives. Order yet Another pair? Try buying the Red color again and see if for some odd reason, they are just different??? They shouldn't be, but who knows. At any rate, after owning 3 pairs, I can definitely say they haven't been consistent which leaves me hesitant to recommend these anymore. Good luck, and I'm interested to see how this model plays out over time with other users.ORIGINAL REVIEW: I'm a musician and vocalist and I need iem's for their intended purpose... live/stage performance use. I stuck these bad boys in my ears the first time and wanted to just cry from joy and relief. I have owned and used some really bad trash and some okay but satisfactory ears in my time, and these are what I've been after but thought I couldn't afford. I don't have the cash flow for 1964's or UE's, and Westone 10's and Shure 215's have done the job just fine, but these KZ A10's are soooo much better AND Cheaper. I have, until now, not used such incredible sounding ears in this price range... or even several ranges above that. If you are on stage, in a band, you know how important it is to hear each instrument or voice clearly, cleanly, no muddiness. These do all that with detail I didn't know I missing before. There is ALSO a warmth that comes out of these that isn't fake sounding, overwhelming or mushy. There is just the right amount of Bass. I realize we don't want thumping subs in our stage iem's but it's definitely there and somehow doesn't overpower. I use these to enjoy my favorite Spotify playlists too and totally love them in this setting as well. The detail is amazing and I highly recommend these to anyone who needs quality but can't drop the funds for other ridiculously priced ears.-- Michelle

These are amazing. Truly. I started with the KZ ZSTs as my first pair of in-ears after borrowing my bass player's westones while I shopped for what I wanted. The westones are nice, but dollar for dollar, the KZs blow them out of the water. The sound separation on the AS10s is astonishing. I'm a singer and use these for live events. They're worth every penny x10.My only complaint is the cable--not for quality, but for a "fit" quirk. On the ZSTs you get a cable that has a small wire inside it, allowing you to shape it to your ear as needed. On the AS10s, the ends proximal to the ear are encased in a preformed silicone, so they're molded to a pre-determined shape. There is no altering this shape. It turned out to be fine for my right ear, but my left ear kept falling off. It actually wouldn't have been a problem at all if it had been my right ear, because I like to hear room sound on stage and so I almost always take my right ear out and use only my left. But it was my left, so it was infuriating. It wouldn't stay close around my ear no matter how much i twisted or repositioned or wrapped it in twist ties to force it to a shape that worked. I don't have deformed ears that I know of, but everyone is different so maybe it was just me. Or maybe it was just a slightly off cable. I don't know. But nothing worked, til I purchased an upgrade cable to replace it with. Now they stay on great (and I have an even better sound quality). Sending them back wasn't really an option because I am on stage multiple times a week and I didn't want to be without them AT ALL (because nothing compares, honestly).One thing to note: I got more foam tips to replace my comply tips that were falling apart, but actually found that I prefer the OEM tips with the AS10s (highly recommend foam for the ZSTs though). Here's why: They are all balanced armatures, with no dynamic drivers. Dynamic drivers displace air, and thus require a small hole to let the air move (which also lets sound in--and sound out). Balanced armatures don't displace air, and thus have no hole. As such, there's less noise pollution from outside the ear canal competing with what's coming out of the in-ears, and no bleed from a hole in the in-ear housing itself. So the OEM tips keep the sound isolated well. When I change to the foam tips, I just get a muddier sound, oddly enough. So I stopped using them and went back to the OEM tips. Very happy with the clarity.

Holy crap these are good! I bought some behringers 2 1/2 years ago that were more expensive and these are infinitely better! Fit, separation of frequency, bass—everything is way more present. I play bass and sing and these are fantastic for that application. I just wasn't happy with the whole in ear monitor thing and then I borrowed a bandmates shure IEMs and realized how much mine sucked. These are at least just as good as the shure for considerably less price. Seems like good quality monitors have come waaay down in price.