KZ Castor in Ear HiFi Earphone 2DD Dynamic High-end Tunable IEM Earphones in Ear Monitor Headphones with Silicone Tips Detachable Cabel IEMs for Singer Musician DJ On Stage (Silver, Without Mic)

Overall, pleased with my purchase. I'm new to the IEM world but I have been playing games for some time now. And during a late night search for budget gaming headphones, I found these IEM's and they are great. Budget friendly option. The sound quality and clarity is great. But I can say the cord length, like most items like these is a bit short. And it does include different tips to choose your comfort which is nice. I'm still working on finding the best fit and way to use them on my gaming PC. But so far they are great. The design of the IEM is great and overall I think these will be far better then most budget headsets. Either way, forget headsets and try IEM's you will be surprised !

I have a few different IEMS I've been testing with gaming on my PS5 from the budget category I.E. Wan'er, Aria, 7hz Zero. And I have to say these are my favorite so far (Aria Second). If you've happened upon these you've probably heard about their massive sound stage and for the price, it is quite impressive. Good bass but also very defined and separated highs mids and lows where your game (or music) doesn't sound muddy and muffled together. They have definitive directional sound and an airy-ness that really lends to an atmospheric experience. I played with call of duty and could hear clearly where gunshots were coming from. The horizontal Soundstage is bigger than the vertical. But hey. They're 25 bucks. But built quite solid. I also played spiderman with them as an alternative atmosphere and could hear all of the little details in the city. Overall. They are an excellent buy for gaming or music or both. And if you don't like them. Hey, again, $25 bucks. My only caveat is definitely find some more ear tips. Contrary to my former experiences, the foam eartips can make them sound quite piercing at times. Especially with gunshots. The final audio eartips sound quite well. But if you already own the 7hz zero I actually really like the frequencies delivered with the blue or pink eartips that come with the 7hz. Happy gaming. And happy listening friends.

KZ has pulled of a nicely cohesive sound in these IEMs, particularly since a single balanced armature for medium to high frequencies is paired up one driver. The crossover is smooth and reasonably balanced for a low-cost monitor. Bass is satisfactory, extended and balanced with highs, although this is not for lovers of bass-heavy beat.I was fascinated by the 4 slide switches, which is rare for IEM near this price, and wanted to know if they changed tuning, and by how much. I hear not significant change with settings, so I set up a sweep test with the Audacity editor using a small electret condenser microphone coupled to the IEM port with dense closed cell foam. (This was less for measuring accurate frequency response than to see the magnitude of the changes.) The diagrams show a sweep from 50 Hz to 12,000 Hz, with "bumps" in the shapes to the left of center on each at 2,000, 3,000 and 4,000 Hz. (The low end frequency response to the far left should be ignored due to rolloff in the microphone and acoustic coupling but it is able to compare. switch settings)The top graph shows DDDU settings, the next two are both UUUU (for repeatability) and the last is DDDD. This is a linear scale marked in dB and differences of less than 2 dB should be visible. However, the sweeps show almost no difference in frequency response, confirming my listening tests. The UUUU show about 2 dB less output at 4,000 Hz and above, compared to the DDDD setting, but that's barely audible. This makes the switches more of a gimmick than a useful feature.The Krillas were shipped with the UUUU mode, and that's my preference to balance the midband to the lows. The result, as noted earlier, is pleasant and balanced, with no hollowness from the single BA transducer. Depth is limited. Good enough to keep, but there are equal or better-sounding units under $25, IMHO.

Did not see even one review for the KZ ESX. Just the Blon BL01, so thought to put down my impressions for those who may be interested in this IEM.First off, anyone who has owned a set of KZ already knows. They are notorious for being a cost effective brand. Doing so with a servicable, yet fairly crappy stock cable and I knew this going in.However, once they were paired with the FAAEAL High Purity OFC 8-core (Silver) cable for KZ (only $12.99, honestly a bargain for its quality), these KZ ESX literally came alive. I now understand why KZ named this set as their 10th Anniversary Edition.Whilst being fairly easy to drive, using a dongle DAC makes them even clearer and stronger. Long gone is the bass bleed KZ have been known for in the past. Separation is well done and noticable, there was no issues in the pinna gain region while having space and some decent extension as well. Without question, with this combo, these are The Best KZ set I own, which in truth are several, including the KZ-PR1 Pro.Together, the sound results are Far Higher than their price point/overall cost. Highly recommended

I spent my time with headphones and have recently gotten into more IEMs. It's truly amazing how wonderful these sound at this price. I first listened to them with an iphone, then old android phone and they were so quiet. Stepped up to my portable dac, and still required being turned up to about 75%.Then I finally plugged them into my desktop amp with a balanced cable, they came to life. The speed at the transitions between notes is amazing. I was picking up the little nuances in songs, that I hadn't noticed. Notes didn't hang around anymore, they were just gone when they were supposed to be.They're large and comfortable to an extent, but it depends on ear size. I switched the tips to my new favorite W1s.They're not the best thing since sliced bread, but it depends on what is missing in your collection. I have some that I listen to when I want to have fun. These make me want to relax and listen to songs that I thought I already knew.