MUSILAND MD10

Ahang,

I don't have the spec on hand for your machine. Just guessing below:

1. If it is a USB based device,
Try to output a WAVE file of 0dB 1KHz, it should be no distortion.

2. CD player output a 0dB sine wave, your DAC should not be distrotion.

If yes, you need to check it.