KZ ES4 Dynamic & Balanced Armature Hybrid Technology Driver in-Ear Earphones (Mic, Black)

A tad late on this review, but I have consistently used them at work since I bought them. Might pick up a second pair for another cable and to use at home.

I got these from a guy on youtube saying how good they're for the money. I'm not disappointed at all, I have a pair of Bose Wireless earbuds thats connected between the earbuds, after 2 years of heavy use the battery is starting to show its age playing maybe two and a half hours to three hours of playtime plus micro usb sucks, but the sound of bose having ear buds from them for nearly ten years after using skullcandy's in middle and high school nothing could smash the bose quality at the price near one-hundred dollars. You can hear the high pitch clearly, punchy bass but not heaps of bass with electronic bass being tame but so clear, the hybrid design for earbuds is amazing never trying a pair before. FOR TWENTY DOLLARS you can't beat the price to quality smashing my bose earbuds thats 120 bucks, probably cost bose 20 to 30 bucks to make them. Would recommend if your looking for high quality sound cheap, get them.

If your expensive headphones have finally kicked the bucket and you don't want to migrate to Bluetooth headphones, I would highly recommend these. At around $20, they provide great quality for the cost without sounding cheap.The headphones are clear plastic frames that look cool and put together well. They are 'half-circle' shape to fit comfortably within the ear. The rubber ear pieces that go inside your ear are generic 'dome' rubber pads in 3 sizes. Nothing special about them, so comfort might not meet expectations compared to other form-fitting earbuds. You WILL need to make sure the fit is snug, but not too tight, or else the sound quality will not deliver as well. Swapping out the ear pieces can be a pain in the butt.The headphones are connected to the cable via dual-pin wire. !MAKE SURE THE WIRES ARE CONNECTED TO THE CORRECT LEFT/RIGHT HEADPHONE, OR ELSE THE SURROUND SOUND WILL BE REVERSED!For ~$20, you I don't think you can get better quality than these. There are definitely $$$ options that will delivery a higher fidelity of sound, but you get a great value for what you pay for with these.

todo bien, el cable es de buena calidad pero yo lo encuentro feo. Todo lo demás muy bien.

Product is good quality, sounds great for price, and came in good condition. Only issue is that the picture is for a different version of this headphone. Side just says "ES4" instead of having the KZ logo and the plate is not nearly as red/vibrant as in the picture. Decided to keep them because they still look cool and work as expected but still a little disappointing.

These are pretty high quality earbuds. These up the quality of music to the point that you can hear the bongo drums in the right earbud on Earth, Wind, and Fire's song "September". The mic is pretty clear and the cable is very high quality. Unlike most common earbuds, these can detach the drivers from the wires, making it more portable. The driver shapes are surprisingly really comfortable despite being entirely plastic. I'm only disappointed with the fact that it's not the amazing logo, instead just some standard font with "ES4" on it. It's very hard to find faults with these earbuds, despite the looks, so I honestly recommend these to anyone that wants to go from cheap earbuds to better quality earbuds.

The sound quality is superb

They are vey difficult to keep in ears.

Llegan a cansar después de un rato, pero muy buenos por el precio, al ecualizarlos correctamente le hacen frente a audífonos mucho más caros.

I have a set of custom dual driver IEM's that I had made that were 400$ that i Used them onstage as a drummer, also have a set of Shure triple driver iems. These KZ's are pretty friggin good and I say with foam tips are better sound quality than my customs, and if they had a bit more bass they wud rival the Shures..... Sound is super clear and sounds great... recommend getting these before you make the plunge into a custom or spend the money on the Shures... These beat the lower end Shures hands down.

Ordered these to try out and really like the product. Overall great sound, with enough detail in the highs and great bass. For the price, I think they're really good. Very happy with them so far. Fit well, nice length in the wire, and look cool. I order the foam tips as well, and they fit even better. I ordered another pair because I thought this pair was not going to come in time. I cancelled t0o late and ended up with two pairs. Kept both and gave a pair to my wife and she loves them as well. I am very tempted to buy the other models as well. Be great to try them out and see the difference.Thanks. Good job.

Já fiquei preocupada assim que o produto chegou, algumas informações da caixa não batiam com as dos outros que eu já havia comprado anteriormente em outras lojas, e assim que eu abrir a caixa ficou claro que de o produto era uma réplica. A qualidade do cabo é até bem próxima a do original, tirando a coloração um pouco diferente, mas o fone em si é totalmente diferente, não chega nem perto da qualidade dos originais.Me senti de certa forma enganada, já que são mostradas imagens do produto original na página do produto, definitivamente não recomendo

I would get the zst. These have a crossover that doesnt work well in the upper mid range.Nozzle is a tad too wide and longQuality is good