Review on 🎧 KZ ZS10 HiFi IEM Earbuds, Five Driver In-Ear Headphones Monitors Earphones (Black) - No Mic by Jeremy Mondragon

I bought the es4s on the 21st of this month. I liked them so much that I immediately decided to upgrade to Zs10s. My test was theoretical, I was wondering how to decide if they sound better than my es4s. I connected one of es4 on one side and Zs10 on the other side. I thought it sounded exactly the same. I was wrong . The Zs10s overpowered and filled in the gaps in bass and mids on listening. It was only when I plugged in one at a time that I could actually hear the difference. Wow! If you can't afford the Zs10, the es4 is more than perfect. If you can get extra money for it, I say go for it