HEADPHONE AMPLIFIER HA-1 USER MANUAL USB Made for
Table of Contents Important Information ........................................................................................................................................................ 1 Precautions................................................................................................................................................................... 2 FCC Statement (For U.S. Customers)..........................................................................................................
Power On / Off........................................................................................................................................................ 14 The Front Panel Display ......................................................................................................................................... 14 Source Selection ....................................................................................................................................................
Important Information 1. 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. 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.
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 Hold the power plug when unplugging. Do not pull on the cord. To ensure proper ventilation around this product, do acceptable power input range is AC 110 V - 120 V not place this product on a sofa, bed, or rug.
Le dispositif rencontre l'exemption des limites courantes d'évaluation dans la section 2.5 de RSS 102 et la conformité à l'exposition de RSS-102 rf, utilisateurs peut obtenir l'information canadienne sur l'exposition et la conformité de rf. 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.
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.
Installation Front Panel Controls 1 2 3 5 4 7 6 8 9 Volume Source USB HEADPHONE AMPLIFIER HA-1 1. Power Button 4. Source Selector Knob 7. 2. Power Status Indicator 5. Balanced Headphone Jack 8. Volume Knob 3. 6.35 mm Headphone Jack 6. Front Panel Display Window 9.
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 Au
end of the remote control and push. The battery tray will pop slightly open. Pull out the battery tray with the remote control buttons facing down. Pay attention to the battery orientation while taking out the old battery. Place a new battery into the tray following the correct orientation by matching the polarity marks on the battery and the tray.
Headphone Output Connection You can connect your headphones to the OPPO HA-1 using either a standard 6.35 mm connector or a 4-pin XLR balanced connector. If your headphones terminate with a 3.5 mm connector, you can use the supplied 3.5 mm to 6.35 mm Headphone Adapter to connect the headphones to the HA-1. For optimal sound quality, you can adjust the Headphone Gain between the Normal and High settings in order to properly drive headphones that are very sensitive or require additional power.
Using the HA-1 as a Pre-Amplifier or DAC The OPPO HA-1 can be used as a pre-amplifier or a Digital-to-Analog Converter (DAC) by connecting its Pre-amplifier Output (PRE OUT) to a power amplifier or a pair of active speakers. The HA-1 offers both RCA and XLR Balanced jacks. The output level is controlled by the Volume Knob or remote. The output is not muted when a pair of headphones is plugged in. It is muted when the remote MUTE button is pressed.
The Trigger Input of the HA-1 can be connected to the trigger output of a source device or surround sound processor. This allows the HA-1 to be turned on and off together with the connected device. The use of Trigger Output or Trigger Input is not required. You can always manually turn on or off the HA-1 using the POWER button on the front panel or remote control. Input Signal Connections The OPPO HA-1 supports multiple analog and digital input connections.
Coaxial Digital Audio Input You can connect a device with a coaxial digital output into the Coaxial Digital Audio Input of the HA-1 using a coaxial digital (75 ohm) cable. The digital signal will be converted by the internal DAC and sent to the headphone and line level outputs. This input source is labeled COAXIAL on the Source Selection screen and COAX on the remote control.
Note: The Coaxial, Optical and AES/EBU Digital Audio Inputs accept stereo PCM signals only. Compressed audio signals such as Dolby Digital or DTS are not supported. USB (Type B) Audio Input You can connect your computer directly to the HA-1 using a USB-A to USB-B cable. This will allow your computer to function as the digital source, and you will be able to use whatever playback software you prefer to output audio through the HA-1.
Bluetooth Audio Connection You can connect a Bluetooth-capable mobile device such as a smartphone or digital audio player by enabling Bluetooth on your mobile device and searching for and connecting to the OPPO HA-1. Once successfully paired and connected, the Bluetooth digital audio signal will be converted by the internal DAC and sent to the headphone and line level outputs. This input source is labeled BLUETOOTH on the Source Selection screen and BT on the remote control.
Using the OPPO HA-1 Basic Operations Power On / Off When the HA-1 is initially connected to AC power, it stays in standby mode. Pressing the Power Button on the HA-1 will result in the Power Status Indicator turning blue, indicating the HA-1 has powered on. When the unit is powering on, the OPPO logo will appear on the screen. When it is fully ready, one of the pre-selected Home Screens (Status, Spectrum or VU Meter) will appear.
Source Selection The active input source can be selected by rotating the Source Selector Knob. The Front Panel Display will show a Source Selection screen, with the active input source highlighted. When the Source Selector Knob is rotated in either direction, a new input source is highlighted. Once you settle down on an input source by leaving the highlight cursor on it or by pressing the Source Selector Knob, the new input source becomes active and the Front Panel Display returns to the Home Screen.
Mute Pressing the MUTE button on the remote control will disable audio output for the HA-1, and the Front Panel Display will show the Mute icon. You can cancel Mute by rotating the Volume Knob, pressing the VOLUME +/- button on the remote control, or by pressing the MUTE button again.
Advanced Operations Advanced configuration of the OPPO HA-1 can be accessed by pressing and rotating the Source Selector Knob. The basic operations are: Press the Source Selector Knob to access advanced configuration screens. If the Source Selector Knob is pressed again immediately without any other operations occurring on the current configuration screen, the next configuration screen is shown.
Screen Dimmer Setting You can adjust the brightness of the Front Panel Display. The following selections are available: Normal (default) – The Front Panel Display will operate at full brightness. Dim – The Front Panel Display brightness will be dimmed. Off – The Front Panel Display will be turned off. Any user interaction will turn on the display temporarily to provide you with visual aid. The display turns off again when the HA-1 returns to its normal operation mode.
Headphone Gain Selection For optimal sound quality, you can select the Headphone Gain setting between High and Normal in order to properly match the sensitivity and impedance of the headphones in use. The following selections are available: High (default) – The headphone amplification circuit of the HA-1 applies the high gain level, which is about 18dB higher than Normal. This setting is recommended for headphones with low sensitivity or high impedance.
Home Theater Bypass Mode Each of the HA-1’s input sources can be individually configured to operate in a Home Theater Bypass mode. If an input source is in this mode, the HA-1’s volume control is bypassed for the Pre-Amplifier Output. The Pre-Amplifier Output level will be exactly the same as the input signal level (unity gain). This feature helps when integrating the HA-1 as a high performance stereo pre-amplifier into a multi-channel home theater sound system.
It is important to configure an input source in Home Theater Bypass mode only if the connected device has its own volume control. Do not connect a source device (such as a CD player or DVD player) without volume control to an input source in Home Theater Bypass mode, since the high output level may cause damage to downstream amplifiers and speakers. Although digital input sources can be configured to Home Theater Bypass mode, it is not recommended.
The input sources that are in Home Theater Bypass mode are indicated with a “BYPASS” banner in the Source Selection screen. Reset Factory Default Settings If you need to reset the HA-1 to its factory default settings, please hold down the Source Selector Knob on the front panel while at the same time press the MUTE button on the remote control. All custom settings will be erased and the factory default settings will be loaded. The Volume Knob will automatically return to the minimum volume position.
Reference Usage Notes In order to prolong the life of your headphone amplifier, it is recommended that you wait at least 30 seconds before you power it on after powering it off. In the case of a malfunction, please power the unit off, wait for 30 seconds, and then power it back on. If the issue persists, please consult the Troubleshooting table or contact an OPPO service center. Power the unit off after operation. Troubleshooting Use this chart to resolve general operational problems.
Specifications Designs and specifications are subject to change without notice. General Dimensions (W x H x D) 10.0 x 4.8 x 12.2 inches, 254 x 80 x 333 mm Mass 13.0 lbs, 5.9 kg Power Supply AC 110-120 V~ / 220-240 V~, 50/60 Hz auto-sensing Power Consumption 70 W (operation), 0.5 W (standby) Trigger Input 3.
DAC Performance Specifications Specification XLR Output Output Level 4.6 ± 0.3 Vrms 2.3 ± 0.3 Vrms Frequency Response 10 Hz – 170 kHz (+0/-3 dB) 10 Hz – 170 kHz (+0/-3 dB) (Tested with -10 dBFS / 384 kHz) 20 Hz – 20 kHz (+0/-0.07 dB) 20 Hz – 20 kHz (+0/-0.07 dB) THD+N at 1 kHz (A Weight, 20 Hz – 20 kHz) < 0.00056% (< -105 dB) < 0.
Limited Warranty OPPO Digital, Inc. Limited Two Year Warranty Your OPPO product has been manufactured to precise standards, and with rigid quality control through every process of manufacturing. It is warranted by OPPO DIGITAL, INC. against defective workmanship or materials for two (2) full years from the original date of purchase. This warranty applies only to OPPO brand products imported or manufactured by OPPO Digital, Inc. and sold to the original consumer purchaser in the U.S.A.
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