Xonar-EQ is a free Android app that allows you to control the equalizer settings of your Asus Xonar sound card from your smartphone. With this app, you can adjust the sound quality of your music and radio according to your preferences. However, it is essential to note that this app requires the Windows application XonarEQ-Server to be installed on your computer. Without it, Xonar-EQ will not work.

To use Xonar-EQ, you need to download and install XonarEQ-Server from the developer's website. Once the server is installed, you can connect to your computer via Wi-Fi using the Xonar-EQ app on your smartphone. The app interface is user-friendly, and you can easily adjust the sound quality by changing the equalizer settings.

Overall, Xonar-EQ is a useful app for those who want to control the sound quality of their Asus Xonar sound card from their phone. However, it is essential to note that XonarEQ-Server is required for the app to work.