In conclusion, KZ ZS10 Pro has a rather good price-to-performance ratio. It’s V-shape bassy but not that too much, which is suitable for the bass-heads who prefer balanced vocals. If you are interested in KZ, these could be the first one to start with.

ZS10 Pro is my first KZ IEM. I have to say the packing of KZ looks as cheap as $9.9. When the Amazon guy handed it to me, I thought it was a wrong delivery. It’s hard to accept such sloppy packaging and accessories.

The earphones themselves boast nice build quality, featuring a tech-inspired 304 stainless steel faceplate that matches the transparent resin cavity housing perfectly. They feel substantial in hand.

The tangly stock cable feels disappointingly cheap to me. There is no information on the wire material or quantity on the Amazon page. Although I don't judge quality by wire thickness, the entire cable conveys an unjustifiably low value impression.

Bass is solid and powerful. The sub-bass has a rather good extension and texture with quick and energetic bounce. The mid bass is alive and punchy, but it declines slowly and there is some energy bleeding into the mid-range.

The mid-range presence is well-balanced, with peaks appearing slightly earlier. The vocals overall convey rich emotion, natural softness, and well-layered clarity. Sibilance is nicely controlled without entirely smoothing it out, preserving the original vocal details.

The treble is slightly bright, but lack sufficient density. The upper treble rolls off prematurely, resulting in inadequate extension, a lack of airiness, and a somewhat rigid presentation.

ZS10 Pro has a warm texture, featuring a classic V-shaped sound signature. The soundstage is horizontally wide, though relatively shallower in depth. Considering its price, ZS10 Pro offers exceptional value for daily use, and is particularly well-suited for music genres that emphasize bass or mids, such as ROCK, KPOP, Rap, EDM, and Jazz.