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Q3: How can I switch between the different filter modes of the QXD1 DAC?
A3: Long press the Mute button for 2 seconds to adjust the filtering mode.
Q4: How can I know which filter was selected?
A4: The three LED indicators of TOS/COAX/USB will be displayed in combination.
Refer to the QXD1 DAC filter mode truth table.
Q5: How do I determine if the volume is turned up to the maximum?
A5: Press the "+" button to increase volume, while the corresponding LED
flashes until it reaches the maximum to stop flashing.
Q6: Can I connect my headphones directly to QXD1?
A6: It is not recommended to use as a headphone amplifier.
Q7: What are the default volume and adjustment step of QXD1?
A7: The default volume is -60dB, the maximum volume is 0dB and the
adjustment step is 2dB/Step.
Q8: Can I set the volume to the default maximum?
A8: Yes. Please refer to the QXD1 Upgrade Guide for details.
