
Unique acoustic structure design: The sound unit is set in the middle rear of the cavity, transmitting an audio signal to the front cavity of the earphone by a customized sound tube. We have retuned the KZ ZS3E bass-frequency, highlighting the detail signal, rather than deliberately amplifying the bass signal in the music. We know, many professional enthusiasts or music lovers like not dreary bass but the rich texture and full of powerful bass. In the absence of playing music, the correct wear can directly isolate about 26dB noise. You can enjoy music quietly by merely adjusting it to about 15-30% of the total volume. The music is smaller, and the listening is better with KZ ZS3E.