The main reason for the loud and low volume of ZTE pickup truck audio is that the balance of the audio host is not adjusted in the middle position.

There is left and right channel balance on the car stereo, L and R. If you add too much to one side of L, the sound on the left will be louder and the sound on the right side of R will be lower.

The audio host of ZTE pickup truck is a navigation touch screen. The audio host adjusts the position of the equalization mode in the audio setting module inside the host, and it is good to adjust the balance of the left and right channels with the audio setting of the host.