Oppo HA-2 User manual

HA-2
Portable Headphone Amplifier / USB DAC
USER GUIDE

1 Important Information
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operation and maintenance (servicing)instruction in the
literature accompanying the appliance.
WARNING:TO RED CE THE RISK OF FIRE OR
ELECTRICSHOCK, DO NOT EXPOSE THIS APPLIANCE
TO RAINOR MOIST RE. DO NOT OPENTHE CABINET.
REFER SERVICING TO Q ALIFIEDPERSONNEL
ONLY.THE APPARAT S SHALL NOT BE EXPOSED
TODRIPPING OR SPLASHING AND THAT NO
OBJECTSFILLED WITH LIQ IDS, S CH AS VASES SHALL
BEPLACED ON THE APPARAT S.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this device near water.
6. Clean only with a dry cloth.
7. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatuses (including amplifiers)
that produce heat.
8. Only use attachments and accessories specified by the
manufacturer.
9. Refer all servicing to qualified service personnel. Servicing
is required when the apparatus has been damaged in any
way, such as when the power supply cord or plug is
damaged, liquid has been spilled or objects have fallen into
the apparatus, the apparatus has been exposed to rain or
moisture, does not operate normally, or has been dropped.
WARNING: To prevent possible hearing damage, do not listen at
high volume levels for long periods. Caution should be taken when
using earphones or headphones with the product because
excessive sound pressure (volume) from earphones or
headphones can cause hearing loss.

Legal Notice
“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.
iPad, iPhone, iPod and iPod touch® are trademarks of Apple
Inc., registered in the .S. and other countries.
Compatible iPod/iPhone/iPad
Models
SB works with iPhone 6, iPhone 6 Plus, iPhone 5S, iPhone
5C, iPhone 5, iPhone 4S, iPad (4th generation), iPad mini,
iPod touch (5th generation).
Android™ Compatibility
SB works with Android devices that support SB OTG ( SB
On-The-Go) and SB Audio Class. Not all devices are
compatible.
Android is a trademark of Google Inc.

2 Introduction
Thank you for choosing the OPPO HA-2 portable headphone
amplifier and SB DAC. The HA-2draws upon the success of the
HA-1 desktop headphone amplifier, and is optimized for portable
use. Featuring a hybrid class AB amplifier and a SB DAC
supporting 384 kHz PCM and DSD256, the HA-2 offers high
performance digital-to-analog conversion for both Apple’s
iPhone/iPod and many Android devices. A 3.5 mm input works
with the remaining portable music players that do not have a
SB-compatible digital output. Convenience features such as
VOOC rapid charging and a mobile device power bank make the
HA-2 a true companion for music on the go.
Accessories
Ensure that the following accessories have been included with
your OPPO HA-2:
1x SB A – Lightning data cable
1x SB micro-B – SB micro-B data cable
1x 3.5 mm – 3.5 mm stereo audio cable
1x SB A – SB micro-B data and rapid charging cable
1x VOOC rapid charger
2x Silicone rubber bands
This user guide
Features
Digital-to-Analogue conversion by ESS Sabre32 Reference
ES9018-2M DAC chip
Supports PCM audio up to 384 kHz / 32-bit, DSD audio up to 12
MHz (DSD256 or DSD4x)
Supports multiple device types for digital-to-analogue conversion
via SB: iPod / iPhone / iPad, smartphones with SB OTG
feature, PC and Mac computers
Stereo headphone output and line-out
Two gain settings for optimal headphone matching
Bass boost
OPPO VOOC rapid charging
Mobile power bank for charging other mobile devices

Names and Functions of Parts
Top:
1. Power/Volume Knob: Turn this knob clockwise to turn
on the unit and increase the volume. Turn it
counterclockwise to decrease the volume. Turn it
counterclockwise until it clicks to turn off the unit.
2. Power Indicator: A green light indicates that the power
is on. The light also serves as a reference point for the
scale on the Volume Knob.
3. Audio-in / Line-Out Jack: When the Source Selector is
set to “C”, this jack can be connected to an analog
audio source, such as a portable music player. When
the Source Selector is set to “A” or “B”, this jack acts
as the line-out for the SB DAC.
3. Headphone Jack: Plug your headphones into this jack.
CA TION: Always reduce the volume before plugging
headphones in and putting them on. While wearing
headphones, do not connect or disconnect them.
Doing so could result in a sudden loud noise that could
harm your hearing.

Bottom:
4. Source Selector: Select one of the three input sources:
SB A port, SB micro-B port, or Audio-in.
5. SB A Port: For connecting to an iPod, iPhone or
iPad; or for charging a mobile device when using the
power bank function.
6. SB micro-B Port: For connecting to a PC, Mac, or
smartphone with SB OTG feature. This port is also
used for charging the HA-2’s internal battery.
Side:
7. Power Bank Indicator: A blue light indicates that the
HA-2 is supplying power to a connected device via the
SB A port.
8. Battery Level / Charging Indicators: Four green lights
indicate the HA-2’s internal battery level. When
charging, these lights also indicate the charging status
and currently charged capacity.
9. Battery Check / Power Bank Button: A single press of
this button lights up the Battery Level Indicators to
show the HA-2’s internal battery level. Press and hold
this button to turn on/off the power bank function, as
indicated by the Power Bank Indicator.
10. Bass Boost Switch: Allows you to enable the Bass
Boost feature. A visible green bar means Bass Boost is
enabled.
11. Gain Switch:Allows you to select low (L) or high (H)
gain for the headphone output.

12 Charging and Battery Use
This unit has a built-in rechargeable lithium polymer battery. It
should be charged before use.
VOOC Rapid Charging
Connect the SB micro-B port of the HA-2 to the supplied
VOOC Rapid Charger using the included SB A – SB
micro-B data and rapid charging cable. Plugging the charger
into a power outlet will begin charging the HA-2’s battery, and
the Charging Indicators on the side of the unit will start to
blink. It may take a few seconds to enter the rapid charging
mode, which is indicated by the Charging Indicators quickly
blinking. When the battery is almost full, rapid charging will
change to normal charging automatically, and the blinking
speed of the Charging Indicators will slow down.
Normal Charging
The unit can also be charged by connecting the SB micro-B
port to a SB port on a Mac or PC. The Charging Indicators
on the side of the unit will blink when the unit is being
charged. Rapid charging is not possible using this connection
method.

Charging Status:
The Charging Indicators on the side of the unit may show the
following statuses:
< 25% 25%
-
50%
50%
-
75%
75%
-
100%
Fully
Charged



☼


☼


☼


☼







Legend:
 - dark
☼ - slowly flashing: normal charging; quickly flashing: rapid
charging
 - green light
CAUTION:
se only the VOOC Rapid Charger and the SB A – SB
micro-B data and rapid charging cable to charge the
unit.
Make sure the environment temperature is between 10°C -
35°C (50°F - 95°F) when charging the unit. If trying to
charge outside of this temperature range, charging
may not occur properly.
If you do not plan to use the unit for a long period of time,
please store it in a cool place avoiding high
temperatures. Charge the unit at least once every 6
months in order to avoid completely draining the
battery.

Checking Battery Level
Press the Battery Check / Power Bank Button briefly to check
the battery level. The Battery Level Indicators will light up to
show the remaining battery power:
<20% 20%
-
25%
25%
-
50%
50%
-
75%
75%
-
100%




















Legend:
 - dark
 - red light
 - green light
When the battery level is below 20%, the Battery Level
Indicators will automatically light up in red as a reminder to
charge as soon as possible.
Charging Other Devices
The unit can be used as a power bank to charge other mobile
devices.
Connect the mobile device to the unit’s SB A port using the
charging cable that comes with your mobile device.
Press and hold the Battery Check / Power Bank Button until
the blue Power Bank Indicator lights up. The HA-2 is
now supplying power to the mobile device.
Press and hold the Battery Check / Power Bank Button again
until the blue Power Bank Indicator goes off when you
no longer need to supply power to the mobile device.
CAUTION:When the HA-2 is being charged, it cannot
supply power to an external device at the same time.

13 Source Device Connections
It is recommended that you turn the unit off before making the
connections.
iPod / iPhone / iPad
Set the Source Selector to position “A”.
Connect the SB A port of the unit to the iPod / iPhone / iPad
using the supplied SB A – Lightning data cable, or
the cable that comes with your iPod / iPhone / iPad.
Smartphones with USB OTG Feature
Set the Source Selector to position “B”.
Connect the SB micro-B port of the unit to the smartphone
using the supplied SB micro-B – SB micro-B data
cable.
Computers
Set the Source Selector to position “B”.
Connect the SB micro-B port of the unit to a SB port on
the computer.
For Mac, no driver is required. You may need to select the
HA-2 as the sound output device by going into System
Preferences / Sound in Mac OS X.
For PC, please download the HA-2 SB driver from the
OPPO Digital web site (www.oppodigital.co.uk) and
follow the instructions to install the driver.
Other Playback Devices
Set the Source Selector to position “C”.
Connect the Audio-in port of the unit to the playback device
using the supplied 3.5 mm – 3.5 mm stereo audio
cable, or any other audio cable with a 3.5 mm stereo
jack.