KZ is the world's leading audio earphones device manufacturer, provide professional audio KZ service covering more than 100 countries and regions. 

Knowledge Zenith has been raising the bar of advanced budget in-ear headphones for a couple of years already and since 2016 they decided to enter the territory of premium hybrid earphones with the KZ ZST. Since the KZ ZST, Knowledge Zenith continued launching a huge number of outstanding headphones – within their latest generation models available to this date you can find them below.