Portable Headphone Amplifier
PHA-3
There is no sound.
Check that the headphone amplifier and the audio device are connected correctly.
Check that the connected device is turned on.
Check that the headphone amplifier is turned on.
If the POWER/CHG indicator does not light up in green, charge the battery. When you charge the battery, turn the
headphone amplifier off beforehand.
Check that the INPUT select switch is in the correct position for the connected audio device.
Check that the OUTPUT select switch is in the correct position for the output jack.
Turn up the volume of the connected device.
Turn up the volume of the headphone amplifier.
Connect the headphone plug firmly to the headphone amplifier.
Check that the headphone amplifier, amplifier and active speaker are connected correctly.
Check that the connected headphones are stereo, not monaural.
The headphone amplifier does not support monaural headphones. Do not connect monaural headphones. It may
cause a malfunction.
When the headphone amplifier is connected to your computer, see “When connecting to a computer, there is no
sound or the sound is not played back properly.”
Sound will be output from the
(headphones) BALANCED L/R jack when the
(headphones) NORMAL jack and
the
(headphones) BALANCED L/R jack are used simultaneously and the digital signal is transmitting to the
headphone amplifier.
Sound will be output from the
(headphones) NORMAL jack when the signal is transmitting to the headphone
amplifier via the AUDIO IN/LINE OUT jack.
The headphone amplifier is only compatible with the PCM digital signal as optical signals. Other optical signals such
as 7.1 ch. etc, will not be output from the headphone amplifier.
Related Topic
When connecting to a computer, there is no sound or the sound is not played back properly.
Summary of settings and connections
4-547-524-11(4)
Copyright 2014 Sony Corporation
Troubleshooting
95