Poor audio quality:
1 Check the audio cable connections and replace if necessary.
2 Ensure that the audio source is set to the correct audio format (PCM or LPCM).
3 Check the audio settings on the source device to make sure that the correct audio output format is selected.
4 Make sure that the sample rate on the source device matches the sample rate of the DAC.
5 Move any electronic devices that may be causing interference away from the DAC and audio cables.
Volume issues:
1 Make sure that the volume on the source device is turned up.
2 Check the audio settings on the source device to ensure that the audio output is set to the DAC.
3 Make sure that the audio source is set to the correct audio format (PCM or LPCM).
4 Make sure that the audio cable is securely connected to the DAC and the source device.
Incompatibility with TV remote control:
1 The volume control on the TV remote control may not work with the DAC, in which case an external volume control may need to be used.
2 Check the audio settings on the TV to ensure that the audio output is set to the DAC.