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 REDUCE THE RISK OF FIRE OR

ELECTRICSHOCK, DO NOT EXPOSE THIS APPLIANCE
TO RAINOR MOISTURE. DO NOT OPENTHE CABINET.
REFER SERVICING TO QUALIFIEDPERSONNEL
ONLY.THE APPARATUS SHALL NOT BE EXPOSED
TODRIPPING OR SPLASHING AND THAT NO
OBJECTSFILLED WITH LIQUIDS, SUCH AS VASES SHALL
BEPLACED ON THE APPARATUS.

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 U.S. and other countries.

Compatible iPod/iPhone/iPad

Models

USB 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

USB works with Android devices that support USB OTG (USB
On-The-Go) and USB 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 USB 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 USB 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
USB-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 USB A – Lightning data cable

1x USB micro-B –USB micro-B data cable

1x 3.5 mm – 3.5 mm stereo audio cable

1x USB A –USB 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 USB: iPod / iPhone / iPad, smartphones with USB 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 USB DAC.

3. Headphone Jack: Plug your headphones into this jack.

CAUTION: 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:
USB A port, USB micro-B port, or Audio-in.

5. USB A Port: For connecting to an iPod, iPhone or
iPad; or for charging a mobile device when using the
power bank function.

6. USB micro-B Port: For connecting to a PC, Mac, or
smartphone with USB 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
USB 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.