EHA5

· 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.

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· Try with other songs.

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

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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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Incorrect firmware version. Unplug and re-plug the power cable, and then flash the correct firmware.

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Firmware upgrade failed. Unplug and re-plug the power cable, and then flash the firmware again.

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Headphone output abnormal. After changing the song or turning down the volume, Unplug and re-plug the power cable and reboot the EHA5.

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Negative and positive voltage abnormal. Check the power adapter. Do not connect the EHA5 to any other devices and headphones, then reboot.

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Bias voltage abnormal. Disconnect the headphone, unplug and re-plug the power cable and reboot the EHA5. Check the headphone or try another headphone.