MTX AUDIO is a free Android application developed by SPower that allows users to control their car radio from their mobile phone. With this app, you can easily adjust the necessary radio frequency, play music stored in USB, and even have external audio input to the host. The app also allows you to play BT music and display ID3 information via Bluetooth control.

One of the most impressive features of the app is the ability to control the audio level and the 10EQ band level of USB music. The app also displays USB music and BT music ID3 information so you can keep track of what you're listening to. Additionally, you can adjust the volume control and treble/bass level control of BT music.

MTX AUDIO also offers Play/Pause/Previous/Next Control and Fader/Balance/10EQ Band Level Control, making it easy to customize your listening experience. Overall, MTX AUDIO is a useful application for anyone looking to control their car radio from their mobile phone.