5. What is the difference between USB AUDIO 1.0/2.0 in K3? How to operate and make it work?

A: In order to meet the flexible use of K3, we have designed two modes.
1. USB AUDIO 1.0 does not need to install the driver, and please connect the K3 with the computer and then play songs directly. it could support up to 96k/24bit.
2. USB AUDIO 2.0 is required to install FiiO official driver firstly. The lastest DAC Driver is v4.47.0: click here. It could support up to 384k/32bit and DSD256.

After the two modes are switched, you need to re-plug the USB or power the K3 on/off to make the USB AUDIO mode take effect.