in Ear Monitor Headphones, KZ Castor Improved Bass HiFi Earphone Sound Tunable Noise Isolating IEMs, Dual-Dynamic Driver Wired Earbuds with Detachable Cable for Singers Musicians

The KZ EDX earbuds offer incredible sound quality and surprisingly effective noise cancelllation for the price. They fit securely and comfortably in my ears without falling out, and they also have a stylish appearance. The audio comes through with excellent clarity, making them great for everyday listening as well as monitoring audio. For only $18, it is difficult to find a better value. The detachable cable feels high quality rather than cheap, and the audio connector snaps firmly into place without feeling loose or unstable. Since the cable can be removed, the earbuds are also easy to store and transport. They are small and lightweight, but they still feel sturdy and well made. Overall, the KZ EDX earbuds provide excellent sound, comfort, build quality, and versatility for the price.

For the price this is high quality iems, only concern would be durability but for the price they are easy to replace, audio quality is above and beyond, fits nicely in my ears (especially necessary since I have odd shaped ears that noise cancelation usually doesn’t work with) easy to adjust as well with how it’s designed

I have been using IEM's on stage for over 18 years. I started with the Shure E2c single-driver buds. At the time (almost 20 years ago) I loved them. Then I got better IEM's with more drivers and eventually got custom-molded professional units. To say I love IEMs for monitoring might be an understatement. A few years ago, I took over a Live Band Karaoke gig and the stage had wedges. They sounded great, but even working to keep my volume reasonable, I noticed my ears were suffering. I went to IEM's for that gig, but found I was constantly pulling one ear out to talk to the karaoke singers or the band. I looked high and low for an IEM bud with an ambient feature, but they were either non-existent, or really really expensive. I found the DQS and the 'semi-open' descriptor piqued my interest. I wasn't so sure about going back to a single-driver. but. they are now my go-to for Live Band Karaoke gigs and I even got the bluetooth adapter and the DQS buds are my main every-day listening/phone call IEM. When I say I was surprised by the sound, I mean, really surprised. The bass is full, the mids are present and the highs are crisp but not overbearing. as an In-Ear-monitor, they get me what I need, and because they are semi-open, I get some wash from the PA, helping to keep an 'open' feel. I now buy these 3 at a time, so if a player lost, broke, or forgot their IEMs they get a pair of these. For all the complaints about the cords, I've had my main pair for a year and a half and besides being grimy because I sweat when I play, the cord is still in great shape. I recommend these to anyone who is in an IEM-only situation that wants to/needs to hear the room a bit. Singers, solo acts, live band karaoke, these are the buds. I still LOVE my custom-molded IEMs when the gig is a show, but I now host LBK 3+ nights a week, so I use these DQS IEMs more than anything else!

When i opened the package, i wasn't expecting much judging by the packaging, but i was pleasantly surprised. Shocked in fact! These sound better than my Floyd Rose in-ear monitors (compared them side by side). The clarity is not what i expected from this price point. crystal clear and clean highs, tight and balanced bass. There are 4 small switches on each ear piece that lets you boost or cut lows, highs, and to an extent the mid response. I chose an overall flat response which was satisfying to listen to, then i tried bass boost 1 setting, nice subtle but effective low curve boost. not overpowering. When i finally settled down for an extended listening period, they seem to disappear sonically in a way where you almost can't tell you're wearing them or where the sound is coming from. That illusion is consistent with high quality headphones and speaker systems. As sound engineers, this is what we strive for in our designs. Before you spend big bucks on custom in ear monitors, give these a try. Warning, Technical stuff: Passive and tuneable in-ear monitors, so there's obviously no active noise cancelling, but when properly fitted using one of the 3 different size silicone ear fittings, they block out much of the ambient room noise. Mind the placement in your ear. the part that goes into the ear canal is in the down most position and the stiff formed part of the wire wraps around your ear and exits around the back of your head. this ensures an non slip fit. All things considered like pricing, fit, and tuning controls, this is a lot of bang for the buck. I give this a 9 out of 10 rating

I have used IEMs for the past 5 years ranging from a variety of price points. This IEM is not the best out there, but for the price, it’s phenomenal. The build quality is excellent. Although the buds are quite heavy, it’s not uncomfortable at all. It sits perfectly on the ear. The ear tips might have been a bit better but still, it’s not bad. The cable is the same, not entirely bad, but other vendors have more high quality cables. Would have been nice to have a pouch but I’m nit gonna ding it for that for the price it’s asking The biggest thing for me was the sound clarity with the increased bass.I wanted something a bit bass heavy than something more balanced while maintaing a clean soundstage. This hits the right spot definitely. The bass is punchy and tight, whilst not making the mids and highs muddy. The mids are a bit recessed but that is expected. The highs are clear and not piercing which some IEM tend to do. The stock switch configuration ( there are 4 switches for increasing the sound level) isn’t bad, but making the first three on does make the sound more enjoyable to my preference as I listen to hip-hop, R&B and EDM more than other genres. I would definitely give the sound a 10/10 compared to others like the Waner, Salnotes and Zero 2. They are also good, but the sound is rather balanced and lacking in the bass department compared to the Castor. P.S. Sound Quality and Preference is entirely subjective. What might be good for me might sound the worst for you. If you prefer a good entry point IEM which tends to be a bit bass heavy, I would highly recommend the Castor. It does compete with other earbuds in much higher price points. Apart from the eartips and the cable being a bit cheap, it is overall one of the best IEMs under 20$!

I'll get my honest bias out first: I hate IEMs. I always have, and from my experience with these KZs, I very likely always will. IEMs are extremely uncomfortable in my ears, which have odd-shaped ear canals to make things even more annoying. Granted, I did use 3rd party memory foam tips, so that nullified the issue of these falling out, but that only introduced even more issues. Wearing these IEMs with memory foam tips felt like I was always underwater. And even with the tips, they always felt extremely uncomfortable and like they were about to pop out, even though they weren't. It's just an extremely unpleasant experience, which really bums me out because I REALLY wanted to love IEMs since I've heard nothing but awesome praise from KZ. For all of my sound testing, I used a flat equalizer in the phone app Power Amp. I always want to hear the natural sounds of the headphones I buy before messing with the equalizer. It's also a great test for Youtube videos because there is no equalizing Youtube videos without some sort of 3rd party equalizer app (that I'm not going to download or use; if I have to use a 3rd party equalizer to make headphones usable, the headphones are garbage to me). Sadly, these IEMs are literally unlistenable with certain genres of music. I am *extremely* sensitive to sharp treble sounds, like cymbal crashing and harsh high frequency sounds, making these KZs unbearable at listenable volumes. Eurobeat is completely out the window because the sounds coming out of these KZs are so harsh that it's quite literally painful, even at low volume. Technical death metal, symphonic metal, black metal, and even power metal sounds absolutely terrible with these. It's muddled, unclear, and just sounds like a cacophony of noise due to the fact these IEMs have absolutely atrocious mids. I know it's the IEMs because all the songs I test sound perfectly fine through my Anker Q20s (which I really hate for technical reasons, even though their sound signature isn't bad). Japanese hardstyle/speedcore sounds either awesome (if they are bass heavy songs), or utterly atrocious (if they are treble or mid-focused sounds); there is no in-between. Acoustics and distortionless music are actually really awesome and when there's little going on in the song, these IEMs are clear as a bell. Opeth's 'To Bid You Farewell' almost sounded better than my SHP-9500s listening through an FX-AUDIO- DAC-X6. But the absolute dealbreaker was listening to Wintersun's awesome song 'Sons Of Winter And Stars', which sounded so muddy that I couldn't even get past the first minute when the band starts playing. These IEMs are just terrible with fast music, which is the vast majority of the music that I listen to. However, with that said, these IEMs are absolutely awesome for most 90s and 2000s drum n bass and Jungle. Every dnb and Jungle song I played through these sounded awesome, and is the only redeeming factor for me. All in all, IEMs just are not for me. I have always hated them, and I wanted to try some from a company with incredibly high praise to give them a fair chance (and for good reason; KZ makes awesome sounds for the price you're paying, even if I can't tolerate the highs). I gave them an honest shot, even trying to seek genres of music I love that would work, and there are some I love that I can easily jam out to with these. It's just incredibly unfortunate that IEMs are just plain *UNCOMFORTABLE* in my ears and makes it impossible to eat food while wearing them due to the pressure to my sinus cavity; something I have no issue with at all with over-ear headphones that have been my mainstay for over 20 years. I honestly wish I had something like these growing up in high school because I went through headphones like a kid with candy. I will keep these KZs and continue to use them to see if I can ever get used to the feel. But it really does bum me out that I just hate the feel of IEMs and was straight up unhappy with the intolerably sharp highs that physically hurt my ears even at 35~40 (out of 100) volume, which is extremely low even for many low impedance headphones I have and use (for reference, a comfortable volume for me is around 60~75 in PowerAmp, and around 75~95 for Youtube videos since those are always way more quiet than through PowerAmp). Maybe I just have to go to more expensive IEMs to get something that has a sound signature that doesn't physically hurt my ears with piercing sharp highs.

In a word "detail", these have way more detail than my Pixel Buds (which I like). The stereo image is good. The sound quality is good. These things seem to have a balanced frequency response when I listen to music. Bright vocals. Good low end without needing to turn up the volume to 100%. Yet when I did turn it up they got loud and are punchy from low to high. When I listened to pink noise, the upper mid range is louder than the other frequencies. Not a deal breaker at all. Normally I use Comply foam tips with earbuds. These were good with the large tips that were in the box. So I listened to these on my Pixel 8 Pro via a USB adapter. I listened to Justin Timberlake's new song "Drown". I also listened to some songs from BEP "Energy Never Dies". I paid $17 for these! The quality to value is massive (quality really good / ultra low price). I won't say these KZ DQS in ear monitors/ear buds are perfect. But I will say they are really good and enjoyable. I'm glad I bought them. I will buy more (one in my backpack, one at work, ane at home. Update - March 8, 2024 I put some unused Comply foam tips on them and they really helped to reduce noise around me. But my Comply tips are large and aren't as comfortable as the stock tips that came with KZ DQS. I plugged them into my laptop, played Apple Music's Hi-Rez audio and I am still content. In fact I happen to have some $99 Sennheiser HD 280 Pro headphones where I am at right now, AND... the KZ DQS are more enjoyable. Dare I say, sound way better? Um, ya. Ya they do. Probably cuz I don't have an external DAC and headphones amp for the Sennheiser to make it a fair comparison. The KZ DQS gets plenty loud and would blow up my ears if they got louder. I will to remember to add updates to this review over time.

Big difference when they are all turned on I recommend

Guter Klang und angenehm zu tragen

I think it just might last longer than my other earphones. The wires are stronger and the sound quality is very nice. I like how they hook over the ear, and how the earphone is the shape of the inside ear.

Heel zuiver geluid, bij lage impedantie - geen extra versterker nodig. Bas wordt niet overdreven, dus goed in oor passen is belangrijk. De draad gaat "over ear", waardoor de oortjes goed blijven zitten

Great earbuds, especially at the pricepoint, however id appreciate a little better bass and a little better top end but thats me being picky 😂

Ottime