Professional maintenance innovation, Aiken, ASUS, MAYA, Onkyo, M-AUDIO, TC, German tanks, Yamaha, Matou, Fokster, RME and a series of professional sound cards. The link is for customers to check and repair costs. We will notify you by phone after the specific bad component cost is detected. If you repair it, then add the component cost and return it to you without repairing the original packaging. < Free sound card detection. Just pay the freight back. There is a detailed maintenance flowchart below.![](https://img.alicdn.com/imgextra/i2/194456375/TB2mV84aFXXXXcqXXXXXXXXXXXX_!!194456375.jpg)