Sony PHA-2 User Manual

Page 2

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Listening to Music

Listening to music with headphones

2,5

4,6

Front of the unit

Left side of
the unit

You can listen to music from an audio device connected to the
unit with the headphones connected to the PHONES jack of the
unit.
Notes

ˎ Connect the stereo mini plug to the unit.

ˎ This unit does not support monaural headphones, headphones with a

remote control, or headsets with a microphone.

Connect the headphones to the PHONES jack of the
unit.

Connect an audio device to the unit, then turn on the
connected audio device.

For details on connecting the audio device, see “Connecting to
an Audio Device.”

Set the OUTPUT SELECT switch to PHONES.

Rotate the power/volume knob clockwise to turn on
the unit.

The POWER indicator lights up green. Rotate the power/
volume knob clockwise further to turn up the volume. When
the power is turned on, you can check the battery level by the
number of times the POWER indicator flashes.

Start playback on the connected audio device.

When playing High-Resolution Audio format data on your
computer with the unit, use “Hi-Res Audio Player.”
For details on installing “Hi-Res Audio Player,” see “To play
High-Resolution Audio format data” of

Computer

Adjust the volume.

Adjust the volume by the power/volume knob. Depending on
the headphones, the volume may remain low, even if you turn
the volume up to the max.
In this case, turn off the unit, set the GAIN select switch to
HIGH, then turn on the unit. In normal use, the setting should
be NORMAL.

Left side of the unit

Note

ˎ If you turn the volume up too high, it may damage your hearing. Be

careful not to turn the volume up too high.

Tip

ˎ When connecting a device such as a smartphone or portable audio

player, adjust the volume on the connected device beforehand.
Depending on the device, audio output settings may be required.

Listening to music with an amplifier or active
speaker

2,5

4,6

Front of the unit

Left side of
the unit

Amplifier, active
speaker, etc.

Prepare the connecting cord or cable
according to the equipment to be connected.

You can listen to music from an audio device connected to the
unit with the amplifier or active speaker connected to the AUDIO
IN/LINE OUT jack of the unit.

Connect an amplifier or active speaker to the AUDIO
IN/LINE OUT jack of the unit.

Connect an audio device to the unit, then turn on the
connected audio device.

For details on connecting the audio device, see “Connecting to
an Audio Device.”

Set the OUTPUT SELECT switch to LINE OUT.

Rotate the power/volume knob clockwise to turn on
the unit.

The POWER indicator lights up green. When the power is
turned on, you can check the battery level by the number of
times the POWER indicator flashes.

Start playback on the connected audio device.

Computer

Adjust the volume.

Adjust the volume on the connected audio device.
For details on adjusting the volume, refer to the operating
instructions of the connected audio device.
Note

ˎ The sound from the AUDIO IN/LINE OUT jack of the unit cannot be

adjusted by the power/volume knob or the GAIN select switch of the
unit.

List of the settings/outputs of each port/jack which is
connected to the audio device

Port/jack which is
connected to the
audio device

Setting position of
the input select
switch

Output jack of the
audio signal

“WALKMAN”
connecting port

Second position from
the left

PHONES jack*

AUDIO IN/LINE OUT
jack*

iPhone/iPad/iPod
connecting port

Second position from
the right

PHONES jack*

AUDIO IN/LINE OUT
jack*



(USB) port (for

connecting to a
computer)

Right edge position

PHONES jack*

AUDIO IN/LINE OUT
jack*

When listening to music with headphones connected to the PHONES jack,

set the OUTPUT SELECT switch to PHONES.

When listening to music with an amplifier or active speaker connected to

the AUDIO IN/LINE OUT jack, set the OUTPUT SELECT switch to LINE OUT.

Port/jack
which is
connected to
the audio
device

Setting
position of
the input
select switch

Setting
position of
the OUTPUT
SELECT
switch

Output jack
of the audio
signal

AUDIO IN/LINE
OUT jack

AUDIO IN (the
left edge
position)

PHONES

PHONES jack
only

Fastening the Audio Device to the Unit

You can fasten a connected device to the unit using the silicone
belts (supplied).

How to use the silicone belts (supplied)

Mount the connected device on the unit. Insert the lugs of the
silicone belts into the slots on one side of the unit. Pull the belts
over and insert the lugs in the slots on the other side, as shown
below. (4 silicone belts are supplied.)

Tip

ˎ If the audio device does not mount on the rubber rails of the unit, insert the

protection sheet (supplied) between this unit and the audio device, to avoid
scratching.

Notes

ˎ Be careful not to pinch your finger when inserting the lugs of the silicon belt

into the slots of the unit. It may cause injury.

ˎ Sony is not liable for damage to an audio device caused by using the

silicone belts.

ˎ The silicone belts are not guaranteed to fasten all audio devices.

ˎ Do not over-stretch the silicone belt. It may cause a malfunction.

Troubleshooting

If you run into any problems using this unit, use the following
checklist and read the product support information on our
website. Should any problem persist, consult your nearest Sony
dealer.
No sound

Check that the unit and the audio device are connected

correctly.

Check that the connected device is turned on.

Check that the unit is turned on.

If the POWER indicator does not light up, charge the battery.

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 unit.

Connect the headphone plug firmly to the unit.

Check that the unit, amplifier and active speaker are

connected correctly.

Check that the connected headphones are stereo, not

monaural.
The unit does not support monaural headphones. Do not
connect monaural headphones. It may cause a malfunction.

When connected to a computer, there is no sound or the
sound is not played back properly.

The computer does not recognize the unit as a USB device.

Restart your computer.
Install the driver software for Windows “Sony Portable
Headphone Amplifier USB Audio 2.0 Driver” on your Windows
computer. For details on installing, see

Computer

Turn up the volume of your computer or software.

If the unit was connected to the computer while using audio

playback software, restart the audio playback software.

When playing High-Resolution Audio format data on your

computer with the unit, use the audio playback software
compatible with the High-Resolution Audio format data, such
as “Hi-Res Audio Player.”
When “Hi-Res Audio Player” is not installed, install it on your
computer. For details on installing, see “To play High-
Resolution Audio format data” of

Computer

If the computer enters standby, sleep or hibernation mode,

while the music is played back by using the audio playback
software, restart the audio playback software.

Check that the sound device settings of your computer are

correct.

For Windows 8

Press and hold the [Windows] and [X] keys to display the
menu, select [Control Panel], [Hardware and Sound],
[Sound], [Playback] tab, select [Sony Portable Headphone
Amplifier] for the playback device, then click [Set default].

For Windows 7/Windows Vista

Click the [Start] menu, select [Control Panel], [Hardware and
Sound], [Sound], [Playback] tab, select [Sony Portable
Headphone Amplifier] for the playback device, then click
[Set default].

For Macintosh

Click the [Apple] menu, select [System Preferences],
[Sound], [Output] tab, then select [Portable Headphone
Amplifier] for [Select a device for sound output].

The volume control of your computer or the audio playback

software is set to suppress the sound. Cancel the setting.

The CD-ROM drive does not support the digital reproduction

function. Use a CD-ROM drive that supports the digital
reproduction function.

Digitally broadcast sound may not be output from a

computer’s USB port. In this case, connect the AUDIO IN/LINE
OUT jack of the unit to the analog audio output of the
computer.

Low sound

Turn up the volume of the connected device.

Turn up the volume of the unit.

When using high-impedance headphones, set the GAIN

select switch to HIGH.

Use headphones that have a stereo mini plug. The unit only

supports headphones that have a stereo mini plug. If you use
headphones/headset with a remote control or microphone,
there may be low sound or no sound.

The unit does not turn on.

Charge the battery of the unit.

When battery life reduces to half, the battery is approaching

the end of its service life. Consult your nearest Sony dealer
for replacement.

Distorted sound

If the audio device is connected to the AUDIO IN/LINE OUT

jack of the unit, turn down the volume of the connected
device.

Set the equalizer setting of the connected device to off.

Charge the battery of the unit.
The battery cannot be charged.

Turn off the unit.

Check that the unit and your computer are firmly connected

using the micro-USB cable (supplied).

Check that the computer is turned on and not in standby,

sleep or hibernation mode.

Check that the unit and the computer are directly connected,

and not via a USB hub.

Try the USB connection procedure again in cases other than

those stated above.

The USB port of the connected computer may have a

problem. Connect the unit to another USB port of the
computer if available.

A USB AC adaptor that is not recommended is being used.

Charging methods that are not supported may not be

possible.

The battery is fully charged.

If the battery is fully charged, the CHG (charge) indicator may
blink and go off, and charging may not start. This is not a
malfunction. For details, see “Charging the Unit.”

If the unit is not used for a long time, the CHG (charge)

indicator may take a while to light up red when you connect
it to your computer. In this case, do not disconnect the
micro-USB cable from the unit, and wait until the CHG
(charge) indicator lights up red.

Charging time is too long.

Check that the unit and the computer are directly connected,

not via a USB hub.

A cable which is not supplied is used.

A USB AC adaptor that is not recommended is being used.
Noise is generated.

When connecting an audio device to the AUDIO IN/LINE OUT

jack of the unit, adjust the volume of the connected device,
then turn up the volume of the unit.

Keep the computer away from the unit.

Restart the audio playback software.

Turn off the connected audio device, then turn it on again.
Sound is interrupted when connecting to the computer.

The CPU of your computer is overloaded. Close other

applications.

Other USB devices are connected to your computer and

being used simultaneously. Quit operating other USB devices.

The remote control of the headset does not work.

Remote control operation is not supported by this unit.
The microphone of the headset does not work.

Headset microphones are not supported by this unit.
A connected radio or TV cannot receive a signal/ Noise is
generated.

Keep the connected device away from the unit.

Precautions

On Safety

ˎ Do not put weight or pressure on this unit as it may cause the unit to

deform during long storage.

ˎ Do not drop the unit or subject it to external shock, as it may cause a

malfunction.

ˎ Clean the unit with a soft dry cloth.

ˎ If there is noise while listening to the radio, etc., move the unit farther away

from the connected device.

On placement

ˎ Do not place the unit in a location where it is:

ˋSubject to extreme high temperature (such as in a car with its windows

closed).

ˋSubject to direct sunlight or near a heat source.

ˋSubject to mechanical vibration or shock.

ˋSubject to a magnetic field.

(such as near a magnet, speaker or TV).

ˋSubject to excessive dust.

Specifications

Frequency range
10 Hz – 100 kHz (AUDIO IN input)
Distortion 0.01% or less (1 kHz)
Supported impedance
8 Ω - 600 Ω
Maximum input
1 Vrms (AUDIO IN)
Maximum output (when using
the built-in lithium-ion
rechargeable battery)
Approx. 165 mW + 165 mW
(8 Ω, 10 % distortion)
Approx. 90 mW + 90 mW
(32 Ω, 1 % distortion)
Approx. 25 mW + 25 mW
(300 Ω, 10 % distortion)
Output jack
Stereo mini jack*

(PHONES jack)

Stereo mini jack*

(Switching the input

and output of the AUDIO IN/LINE OUT
jack by the OUTPUT SELECT switch)
Input jack/port
Stereo mini jack*

(Switching the input

and output of the AUDIO IN/LINE OUT
jack by the OUTPUT SELECT switch)
Micro-USB port (type B)
“WALKMAN” connecting port
iPhone/iPad/iPod connecting port
*

Only a 3-pole stereo mini plug is

supported. Other plugs, including
2-pole mini plug or 4-pole stereo
mini plug, are not supported.

Operating temperature
0 °C to 40 °C (32°F to 104°F)
Charging temperature
5 °C to 35 °C (41°F to 95°F)
Power source
DC 3.7 V built-in lithium-ion
rechargeable battery
Battery life*

Analog connection: Approx. 17 hours*

Digital connection: Approx. 6.5
hours*

Charging time
When connected to a computer:
Approx. 7 hours*

When connected to an AC outlet
using the recommended USB AC
adaptor (optional): Approx. 3.5
hours*

when using the unit at 1 mW +

1 mW output (24 Ω). Time may vary,
depending on the immediate
environment or conditions of use.

Time required for empty battery to

recharge.

Dimensions
Approx. 68 mm × 29 mm × 140 mm
(2

Ч 1

Ч 5

in) (w/h/d,

projecting parts are not included)
Mass
Approx. 270 g (9.52 oz)
Supported sampling
frequencies/bit
PCM: Maximum 192 kHz/24 bit
DSD: 2.8 MHz, 5.6 MHz*

When playing back DSD on your

Mac OS, or Windows in DoP mode,
2.8 MHz is the upper limit.

Included items
PHA-2 (this unit) (1)
Digital output USB cable for
“WALKMAN” (1)
Micro-USB cable (1)
Stereo mini cable (1)
Silicone belt (4)
Protection sheet (1)
Operating Instructions (this manual)
(1)
Recommended accessory
USB AC adaptor: AC-UD20 (optional)
Operating environment
Compliant OS:
Windows 8/Windows 8 Pro
Windows 7
Starter (SP1 or later)/Home Basic (SP1
or later)/Home Premium (SP1 or
later)/Professional (SP1 or later)/
Ultimate (SP1 or later)
Windows Vista
Home Basic (SP2 or later)/Home
Premium (SP2 or later)/Business (SP2
or later)/Ultimate (SP2 or later)
Mac OS X (10.6.8 or later)
CPU: Intel Core 2 Processor 1.6 GHz or
better
Memory: 1 GB or better
USB port (USB 2.0 High Speed)

ˎ One of the above OS need to be

installed to the computer at the
factory.

ˎ The unit is not guaranteed to

operate with all computers.

ˎ The unit is not guaranteed to

operate with home built computers,
operating systems that are
personally upgraded, or multiple
operating systems.

ˎ The unit is not guaranteed to

operate with functions such as
system suspend, sleep, or
hibernation, on any computer.

Design and specifications are subject
to change without notice.

Trademark Notices

ˎ “WALKMAN” and “WALKMAN” logo are registered trademarks of Sony

Corporation.

ˎ iPad, iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks of

Apple Inc., registered in the U.S. and other countries.

ˎ “Made for iPod,” “Made for iPhone,” and “Made for iPad” mean that an

electronic accessory has been designed to connect specifically to iPod,
iPhone or iPad, respectively, and has been certified by the developer to
meet Apple performance standards. Apple is not responsible for the
operation of this device or its compliance with safety and regulatory
standards. Please note that the use of this accessory with iPod, iPhone or
iPad may affect wireless performance.

ˎ Macintosh and Mac OS are trademarks of Apple Inc., registered in the U.S.

and other countries.

ˎ Microsoft, Windows and Windows Vista are registered trademarks or

trademarks of Microsoft Corporation in the United States and/or other
countries.

ˎ All other trademarks and registered trademarks are trademarks or

registered trademarks of their respective holders. In this manual, TM and ®
marks are not specified.

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