Sony PHA-3 Help Manual page 103

Help Guide
Troubleshooting
Portable Headphone Amplifier
PHA-3
Noise is generated.
Connect the headphone amplifier and the device directly, not via a USB hub or USB cable extension.
The USB port of the connected computer may have a problem. Connect the headphone amplifier to another USB port
of the computer if available.
When the audio device is connected to the AUDIO IN/LINE OUT jack of the headphone amplifier, adjust the volume
of the connected device and turn up the volume of the headphone amplifier.
Keep the computer away from the headphone amplifier.
Restart the audio playback software.
Turn off the connected audio device, then turn it on again.
Noise might occur between the songs because the headphone amplifier reproduces an original source authentically
with high sound quality. This is not a malfunction.
Noise might occur if there are wireless devices near by. Use the headphone amplifier at a distance from those
devices.
4-547-524-11(4)
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