I have couple of KZ entry level budget IEM's. And this KEFINE Klean is the upgrade from those. I can feel the difference in Bass, This has a clean sub bass and lows . And mids are very precise. And the highs are very rich and enjoyable. KZ'S highs are more sharp and some times it feels like hurting the ear especially if the volume is higher. But KEFINE Klean does not have that problem, we enjoy the music for longer time
