1.Applicable models: all non-ID7 system models before 2020;

2.Input mode: MOST optical fiber

3.Output mode: optical fiber/coaxial;

4.A player with optical fiber/coaxial output can be connected externally. Signal priority to external audio sources, automatic switching;

5.Output signals to two DSPs, and the front,back, left and right can be independently controlled when two DSPs are added.

6.Media audio, navigation, Bluetooth, alarm, and radar volume can all be reserved. The steering wheel can control the volume;