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Reference
Usage Notes
In order to prolong the life of your headphone amplifier, it is recommended that you wait at least 30 seconds
before you power it on after powering it off.
In the case of a malfunction, please power the unit off, wait for 30 seconds, and then power it back on. If the
issue persists, please consult the Troubleshooting table or contact an OPPO service center.
Power the unit off after operation.
Troubleshooting
Use this chart to resolve general operational problems. If there are any problems that you cannot resolve, please
contact your OPPO service center.
Symptom
Mute is activated. The
Front Panel Display
shows the Mute icon.
Volume is too low.
No sound
The input source is not
connected or is not actively
playing audio.
Audio cable is not properly
connected.
Remote control is out of
Remote control
range.
failure
Low battery.
The protection mechanism
is triggered.
Temporary
malfunction
Interference from other
devices.
User Manual Updates
An updated version of the User Manual may be available online at the OPPO Digital website (www.oppodigital.com).
To read or download the latest version of the User Manual, click on the HA-1 from the Product list, and navigate to the
Support tab.
Occasional updates are needed to reflect new features added to the device since the User Manual was printed. As
future firmware updates provide new features and functions, the online version of the User Manual will be updated
accordingly.
Possible Cause
Solution
Press the MUTE button or rotate the
Volume Knob to unmute.
Press the Volume +/- button or rotate the
Volume Knob to increase the volume.
Rotate the Source Selector Knob or
press a source button on the remote to
select an active input source.
Check audio cable. Reconnect if
necessary.
Use the remote control within the effective
range.
Replace the batteries.
Turn off the unit. Wait for 30 seconds, and
then try again.
Identify interference by turning off other
devices, and then relocate or replace the
offending device.
Reference Page
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