DX5 II

· Check the power connection.

· Check if the rear panel power switch is in the ON position.

· Try with another power cable.

· Try with another power outlet.

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

· Check that the proper input source is selected.

· Check the output setting.

· Check the connections for all devices.

· Insert connection cables all the way in.

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

· Try disabling the PEQ function.

  a, If the PEQ function is enabled and high-sample-rate muting is also active, sampling rates above 192kHz may be muted.

  b, The PEQ gain settings might be too low, especially the pre-gain.

· Bluethooth IN: Too low volume on phone. Please adjust volume.

· USB IN:

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

  b, 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, music player volume and driver volume to the maximum.

· If you experience distortion after enabling the PEQ function, it may be due to the preamp gain being set too high, causing signal overload. Please try gradually reducing the preamp gain until the distortion disappears completely.

· 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, downstream equipment and cables. You can try swapping the left and right channel connections and try with another source.

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· Set to C (Balance) in [Setup Menu - Output settings - Channel balance].

· If the PEQ function is enabled, check whether it is due to different gain settings for the left and right channels.

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

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· Check  if the PEQ function is ON. [Setup menu - PEQ]

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

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· Enable Bluetooth function in the setup menu first. [Setup Menu - Input settings - Bluetooth]

· May be already connected to another Bluetooth device. Press and hold the Brightness button on the remote control to let this unit enter pairing mode.

· Bring the Bluetooth device near to this unit.

· Power off and restart the unit. On your phone, unpair other devices, restart Bluetooth, and then try to pair again.

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· Bring the Bluetooth device near to this unit.

· Remove obstructions between the Bluetooth device and this unit.

· To prevent electromagnetic interference, locate this unit away from microwave ovens, wireless LAN devices and other Bluetooth devices.

· Reconnect the Bluetooth device.

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· USB cable did not connected properly. Please check or change the cable.

· Try with another USB port.

· Check if the USB setting is correct. [Setup Menu - Input settings]

· Driver problem. Try to reinstall the driver.

· May be caused by the PC. Check or try with another PC.

· Some phones require OTG function to be enabled first.

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· Enable remote control function in the setup menu first. [Setup Menu - Advance - Remote]

· Try to insert two fresh AAA batteries.

· Please aim at the remote control receiver.

· Bring the remote control close to the device.

· Use your Android phone's camera to look at the transmitter at the top of the remote. If it doesn't blink when you press the remote button, the remote is defective.

· If you have more than one Topping device, check that you are using the correct remote control.

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The choice of music player app, the setting of music player and the setting of computer/phone will all have an impact on the sampling rate.

The sampling rate displayed by this unit is the sampling rate of the input signal, and it will not change the sampling rate by itself.

If the music player can be set to exclusive mode, the audio signal will not be resampled by the computer/phone, so the sampling rate of the output signal is the sampling rate of the original file, and the sampling rate displayed by this unit is also the sampling rate of the original file.

Because some players can't be set to exclusive mode, the audio signal will be resampled by the computer/phone and then output. So this unit will always display the sampling rate set by the computer/phone.

We recommend using Audirvana player on MAC OS and Foobar on windows OS.

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Disconnect other devices and reboot. If the problem still persists, your unit may be defective. Please contact the store where you purchased it.

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Disconnect other devices and reboot. If the problem still persists, your unit may be defective. Please contact the store where you purchased it.

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Check the power supply. Disconnect other devices and reboot. If the problem still persists, your unit may be defective. Please contact the store where you purchased it.    

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Disconnect other devices and reboot. If the problem still persists, your unit may be defective. Please contact the store where you purchased it.      

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Amplifier circuit outputs abnormal DC voltage. After changing the song or turning down the volume, unplug and re-plug the power cable and reboot the unit. If the problem still persists after disconnecting the other devices and restarting it, the unit may be defective. Please contact the store where you purchased it.

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Please re-flash the correct firmware. Try to reboot the computer or use another computer.

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Please re-flash the correct firmware.

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Please re-flash the correct firmware.

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Please re-flash the correct firmware.

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Please re-flash the firmware.

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Please re-flash the firmware.