Oppo HA-1 User Manual
HEADPHONE AMPLIFIER HA-1
USER
MANUAL
USB
Made for
Table of Contents
Important Information ........................................................................................................................................................ 1
Precautions ................................................................................................................................................................... 2
CE mark ........................................................................................................................................................................ 2
C-Tick mark .................................................................................................................................................................. 2
WEEE symbol ............................................................................................................................................................... 2
Legal Notice .................................................................................................................................................................. 2
Compatible iPod/iPhone/iPad Models .......................................................................................................................... 2
Introduction ........................................................................................................................................................................ 3
Accessories .................................................................................................................................................................. 3
Installation ......................................................................................................................................................................... 4
Front Panel Controls ..................................................................................................................................................... 4
Back Panel Connectors ................................................................................................................................................ 4
Remote Control ............................................................................................................................................................ 5
Remote Control Buttons .......................................................................................................................................... 5
Battery Installation ................................................................................................................................................... 5
Using the Remote Control ....................................................................................................................................... 6
Remote Control App for Smartphones .................................................................................................................... 6
Headphone Output Connection .................................................................................................................................... 7
Balanced Headphone Jack Pin-out ......................................................................................................................... 7
Using the HA-1 as a Pre-Amplifier or DAC ................................................................................................................... 7
RCA Stereo Audio Outputs ...................................................................................................................................... 8
XLR Balanced Audio Outputs .................................................................................................................................. 8
Triggers ................................................................................................................................................................... 8
Input Signal Connections .............................................................................................................................................. 9
RCA Stereo Audio Inputs ........................................................................................................................................ 9
XLR Balanced Audio Inputs ..................................................................................................................................... 9
Coaxial Digital Audio Input ...................................................................................................................................... 9
Optical Digital Audio Input ..................................................................................................................................... 10
AES / EBU Digital Audio Input ............................................................................................................................... 10
USB (Type B) Audio Input ..................................................................................................................................... 10
Mobile USB Audio Input ........................................................................................................................................ 11
Bluetooth Audio Connection .................................................................................................................................. 11
Bluetooth Setup ..................................................................................................................................................... 12
Using the OPPO HA-1 ..................................................................................................................................................... 13
Basic Operations ........................................................................................................................................................ 13
i
Power On / Off ........................................................................................................................................................ 13
The Front Panel Display ......................................................................................................................................... 13
Source Selection .................................................................................................................................................... 13
Volume Control ....................................................................................................................................................... 14
Mute ....................................................................................................................................................................... 14
Playback Controls .................................................................................................................................................. 15
Advanced Operations .................................................................................................................................................. 15
Home Screen Selection .......................................................................................................................................... 16
Screen Dimmer Setting .......................................................................................................................................... 16
Mute Operation ....................................................................................................................................................... 16
Headphone Gain Selection .................................................................................................................................... 17
Home Theater Bypass Mode.................................................................................................................................. 18
Reset Factory Default Settings............................................................................................................................... 20
Reference ......................................................................................................................................................................... 21
Usage Notes................................................................................................................................................................ 21
Troubleshooting........................................................................................................................................................... 21
User Manual Updates.................................................................................................................................................. 21
Specifications .............................................................................................................................................................. 22
ii
Important Information
CAUTION
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.
The lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product's enclosure that
may be of sufficient magnitude to constitute a risk of
electric shock to persons.
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
ELECTRIC SHOCK, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR MOISTURE. DANGEROUS
HIGH VOLTAGES ARE PRESENT INSIDE THE
ENCLOSURE. DO NOT OPEN THE CABINET. REFER
SERVICING TO QUALIFIED PERSONNEL ONLY. THE
APPARATUS SHALL NOT BE EXPOSED TO
DRIPPING OR SPLASHING AND THAT NO OBJECTS
FILLED WITH LIQUIDS, SUCH AS VASES SHALL BE
PLACED 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 block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as
radiators, heat registers, stoves, or other
apparatuses (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding-type plug
has two blades and a third grounding prong. The
wide blade or the third prong is provided for your
safety. If the provided plug does not fit into your
outlet, consult an electrician for replacement of the
obsolete outlet.
10. Protect the power cord from being walked on or
pinched, particularly at plug, receptacle, and the
point where it exits from the apparatus.
11. Only use attachments and accessories specified by
the manufacturer.
12. Unplug this apparatus during lightning storms or
when unused for long periods of time.
13. 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:
The remote control supplied with this product contains a coin/button cell battery. If the coin/ button cell battery is
swallowed, it can cause severe internal burns in just 2 hours and can lead to death. Keep new and used batteries away
from children. If the battery compartment does not close securely, stop using the product and keep it away from
children. If you think batteries might have been swallowed or placed inside any part of the body, seek immediate
medical attention.
DO NOT INGEST BATTERY, CHEMICAL BURN HAZARD.
CAUTION: Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type.
Batteries shall not be exposed to excessive heat such as sunshine, fire or the like.
WARNING: The mains plug is used as disconnect device. The disconnect device shall remain readily operable.
1
Precautions
Before connecting the AC power cord to the
appliance, make sure the voltage designation of
the appliance corresponds to the local electrical
supply. If you are unsure of your power supply,
contact your local power company. The
acceptable power input range is AC 110 V - 120 V
~ / 220 V - 240 V ~, 50 / 60 Hz.
The appliance with CLASS I construction should
be connected to a mains socket with a protective
earth connection.
The device receives power from the AC power
source as long as it is connected to the wall outlet,
even if the device itself has been turned off.
CE mark
This product compiles with European Low
Voltage (2006/95/CE), Electromagnetic
Compatibility (2004/108/EC) and Environmentally-
friendly design of Energy-related Products
(2009/125/EC) Directives when used and installed
according to this instruction manual.
C-Tick mark
This product complies with Australian C-Tick
electromagnetic compatibility (EMC)
emission requirements, according to the requirements
of the Radio communications Labelling
(Electromagnetic Compatibility) Notice 2008.
Unplug the power cord if you are not going to use
the product for an extended period of time.
Hold the power plug when unplugging. Do not pull
on the cord.
To ensure proper ventilation around this product, do
not place this product on a sofa, bed, or rug. When
installing this product on a wall or bookshelf, make
sure to provide appropriate space. We recommend
leaving 4 in (10 cm) of free space at the top, the
sides, and the rear.
High temperature will lead to abnormal operation of
this unit. Do not expose this unit to direct sunlight
or near other heat sources.
WEEE symbol
Correct Disposal of This Product. (Waste
Electrical & Electronic Equipment) Applicable
in the European Union and other European
countries with separate collection systems.
This marking on the product, accessories or literature
indicates that the product and its electronic accessories
(e.g. remote handset) should not be disposed of with
other household waste at the end of their working life.
To prevent possible harm to the environment or human
health from uncontrolled waste disposal, please
separate these items from other types of household
waste and recycle them responsibly to promote the
sustainable reuse of material resources.
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 5S, iPhone 5C, iPhone 5, iPhone 4S, iPad (4th generation), iPad mini, iPod touch (5th
generation).
Bluetooth technology works with iPhone 5S, iPhone 5C, iPhone 5, iPhone 4S, iPad (4th generation), iPad mini,
and iPod touch (5th generation).
2
Introduction
The HA-1 Headphone Amplifier draws upon the proven circuit design of the BDP-95 and BDP-105 Blu-ray Disc players.
We designed the HA-1 headphone amplifier using the same universal approach we take with our Blu-ray players, so
apart from being a high performance headphone amplifier, the HA-1 functions as an asynchronous USB DAC, stereo
pre-amplifier, digital audio dock for mobile devices, and a Bluetooth audio transport.
The HA-1’s analog audio section is a fully balanced, differential design with a Class A power amplifier circuit that is
capable of driving the most difficult of headphones. Throughout the design process, our emphasis was in keeping the
audio signal in the analog domain once it leaves the DAC. The HA-1 is anchored by a robust toroidal power
transformer with linear power regulators and filters with custom made capacitors to ensure the headphone amplifier has
a clean power source with plenty or energy reserves. Users have the choice between using a 4-pin balanced XLR or
traditional quarter-inch (6.35 mm) headphone connection.
The power amplification section uses hand-picked and paired discrete components to ensure symmetry. The volume
control knob is motor-driven and can be adjusted either by hand or via remote control while keeping the audio in the
analog domain. Line level RCA and balanced XLR analog inputs and outputs are available, and built-in monitoring and
protection circuitry guards against short-circuiting, overloading, and DC offset.
The HA-1 is ideally suited for high-resolution digital audio. It includes coaxial, optical, balanced AES/EBU digital inputs
as well as an asynchronous USB DAC controlled by a 16-core XMOS chipset that supports both PCM and DSD
formats. The same ESS 9018 Sabre
ensures high resolution performance with extremely low noise and distortion. You can easily connect the HA-1 to a
computer via USB and enjoy jitter-free music using your preferred playback software. For added convenience,
Bluetooth connectivity with the high quality aptX codec is also available.
32
Reference DAC and output driving state used in our audiophile Blu-ray players
Aesthetically, the HA-1 features a classic design with contemporary elements. It is housed in a thick aluminum chassis,
and its familiar volume and source selection knobs are complemented by a high-quality TFT LCD display providing
convenient access to the HA-1’s intuitive user interface. Depending on your preferences or the mood of the music
being played, you can choose between a classic VU meter, a modern spectrum display, or a simple informational
summary to be displayed on the screen. A supplied IR remote and smartphone application via Bluetooth provide
additional control and convenience.
The OPPO HA-1 Headphone Amplifier allows you to fully realize the potential of your high-end headphones. The HA-1
is a perfect match for OPPO Planar Magnetic headphones, and its power and versatility allow it to meet the demands
of the most discerning music lover.
Accessories
Ensure that the following accessories have been included with your OPPO HA-1 Headphone Amplifier:
User Manual
Remote Control with Battery
3.5 mm to 6.35 mm Headphone Adapter
Power Cable , about 4.5 feet
Bluetooth Antenna
3
110-1 20V~ / 22 0-240 V~
Ster eo Audio O ut
XLR Ba lance d Audio Ou t
HA-1 H EADPH ONE AMPL IFIER
Installation
Front Panel Controls
1 2
3
Source
5
4
1. Power Button
2. Power Status Indicator
3. 6.35 mm Headphone Jack
Back Panel Connectors
6
HEADPHONE AMPLIFIER HA-1
4. Source Selector Knob
5. Balanced Headphone Jack
6. Front Panel Display Window
7
8 9
Volume
USB
7. IR Sensor Window
8. Volume Knob
9. Mobile USB Audio Input
1 2
R
R
3
ANALOG INPUT
R
SStteerreeoo AAuuddiioo IInn
RR BBaallaanncceedd AAuudd
XXLLiioo IInn
PRE O UT
1. XLR Balanced Audio Input
2. Pre-Amplifier Output (XLR)
3. RCA Stereo Audio Input
4. Pre-Amplifier Output (RCA)
4
4
L
L
LR
L
5
5. Bluetooth Antenna
6. Trigger Input
7. AES / EBU Digital Audio Input
8. Trigger Output
6
AES/EBU
TRIGGER
Out
In
7
89 10
DIGITAL INPUT
Coaxial
9. Coaxial Digital Audio Input
10. Optical Digital Audio Input
11. USB (Type B) Audio Input
12. AC Inlet
Optical
11
USB DAC
AC IN
12
Remote Control
Remote Control Buttons
POWER: Toggle between STANDBY and ON
MUTE: Mute audio output
VOLUME +/-: Increase and decrease volume
PREV: Skip to previous track
PLAY / PAUSE: Start or Pause playback
NEXT: Skip to next track
COAX: Switch to Coaxial Digital Audio Input
OPTI: Switch to Optical Digital Audio Input
AES/EBU: Switch to AES/EBU Digital Audio Input
USB: Switch to USB (Type B) Audio Input
BT: Switch to Bluetooth Audio Input
MOBILE: Switch to Mobile USB Audio Input
RCA: Switch to RCA Stereo Audio Input
XLR: Switch to XLR Balanced Audio Input
DIMMER: Dim the front panel display
Battery Installation
The remote control comes with the battery pre-installed. When the original battery runs out, replace it with a new
CR2032 button battery. To replace the battery, insert a straightened paper clip into the battery tray release hole at the
5
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