Help Guide
Portable Headphone Amplifier
PHA-2A
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The microphone of the headset does not work.
Headset microphones are not supported by the headphone amplifier.
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Getting Started
Included items
Checking the included items
About the supplied manuals
How to use the silicone belts
Overview
What you can do with the headphone amplifier
About High-Resolution Audio format files
About the balanced connection
Parts and controls
Parts and controls
About the indicators
Power source
Charging the battery via a computer
Charging the battery via an AC outlet
Turning the power on
Turning the power off
Checking the battery level
Making connections
Connecting to a WALKMAN®
Connecting to a digital output supported WALKMAN®
Connecting to an Xperia
Connecting to a digital output supported Xperia
Connecting to an iPhone/iPad/iPod
Connecting to an iPhone/iPad/iPod
Preparing and connecting with Windows computer
Installing the driver software on a Windows computer
Installing “Hi-Res Audio Player” on a computer
Connecting to a Windows computer
Setting the sound device (Windows 10)
Setting the sound device (Windows 8/8.1)
Setting the sound device (Windows 7)
Preparing and connecting with Mac
Installing “Hi-Res Audio Player” on a computer
Connecting to a Mac
Setting the sound device (Mac)
Listening to music
Headphones
Listening to music with headphones
Listening to music with headphones via balanced connection
Information
Compatible device
Compatible WALKMAN® models
Compatible Xperia models
Compatible iPhone/iPad/iPod models
Compatible Windows computers
Compatible Mac
Compatible balanced connection headphones
Notes on use
Precautions
Trademarks
Trademarks
Support website
Customer support websites
Specifications
Specifications
Troubleshooting
Troubleshooting
What can I do to solve a problem?
Headphone amplifier
Power
Unable to turn on the headphone amplifier/The battery life becomes short.
Unable to charge the battery.
Charging time is too long.
Even though the power/volume knob is in the on position, the CHG POWER indicator lights up in red.
Sound
There is no sound.
The sound is low.
The sound is distorted.
Noise is generated.
Connected device
Computer
Unable to install the driver software on a Windows computer.
When connecting to a computer, there is no sound or the sound is not played back properly.
Sound is interrupted when connecting to the computer.
Other device
The remote control of the headset does not work.
The microphone of the headset does not work.
I want to connect balanced connection compatible headphones with a 3-pole mini plug (balanced connection)×2 to this unit
