1. Common Audio Issues

- One Channel Has Sound or Unbalanced Output: Ensure all cables are securely connected. Test with different cables and input modes. For RCA output, check speaker connections. For headphones, ensure the jack is fully inserted and try different headphones.

- No Sound from USB: Use different USB cables and ports. Restart your computer and select the correct sound output device (e.g., HIFI Audio). Update or reinstall the USB driver.

- White Noise or Static: Set the volume to 50% or lower. Ensure all cables are securely connected and test for interference from nearby devices. Use well-shielded cables and try different input modes. For headphones, use high-impedance headphones to reduce noise.

2. Connection and Compatibility

- Connecting to a Computer: Ensure your USB cables support the OTG function. For iPhone, use a USB B to Lightning OTG Cable. For Android, use a USB B to Type-C Cable. Follow the setup guide for detailed instructions.

- Connecting to a TV: Use a coaxial or optical cable. Ensure the TV is set to PCM/RAW mode and disable Dolby or DTS sound. Follow the setup guide for detailed instructions.

- Power Issues: Ensure a stable power supply. Replace the power cable or adapter if necessary. Refer to the tutorial video for guidance.

3. General Tips: Driver Updates: If you encounter driver errors, update to the latest Microsoft driver (KB5050094) for compatibility. Volume Control: The TV remote cannot control the Q4 volume when connected via optical or coaxial. Use the Q4 volume knob instead.