DX1

· The device did not power on. Check the power supply.

· Check the connections for all devices.

· Insert connection cables all the way in.

· Check the volume of all devices and whether they are muted.

· Too low volume on PC. Please check and adjust the computer system volume, music player volume and driver volume.

· Select the default output device of your music player or computer as this unit.

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· Try with other songs.

· The specifications of songs are not supported by this unit.

· If the noise appears only when playing DSD files, please check and adjust the computer system volume and music player volume to the maximum.

· Check to see if the problem is with the source, downstream equipment and cables.

· If the noise disappears after unplugging the USB cable, it may be interference from the source. You could try to add a USB isolation between this unit and the source.

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Check to see if the problem is with the source, headphone and cables. You can try swapping the left and right channel connections and try with another headphone.

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Check to see if the problem is with the source, headphone and cables. You can try swapping the left and right channel connections and try with another headphone.

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The knob is used to adjust the volume of headphone output. the volume of Line out is not adjustable and is the maximum value.

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Fast roll off linear