Shanling M0 Pro There are no noticeable scratches. Regarding usage frequency, it's mainly on weekends. A protective seal is applied to the LCD touch screen. I will also include the conversion code necessary for balanced playback, the Shanling M0 Pro 4.4mm adapter cable (3.5mm to 4.4mm conversion), and the red case. Please consider this item only if you understand that it is a used product. Also, to prevent product substitution, we do not accept claims or returns. We appreciate your understanding in this matter.