OPPO HA1 Headphone Amplifier/DAC

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OPPO HA1 Headphone Amplifier/DAC

Regular Price: $1,799.00

Special Price $1,619.00

Warranty Period: 2 years Sold as: Single Unit

Regular Price: $1,799.00

Special Price $1,619.00

  As a part of our dealer agreement this product is unavailable for online sale.  
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Uncompromising Audio built with the latest technology.

The analogue audio section of the HA-1 is a fully balanced design with an emphasis on keeping the audio signal in the analogue domain once it leaves the DAC. The HA-1 is anchored by a hefty toroidal power transformer, and linear power regulators and filters with custom made capacitors ensure that the headphone amplifier has a clean power source with plenty of reserve energy. The fully balanced Class A power amplification section uses hand-picked and paired discrete components to ensure symmetry, and a motor-driven precision volume control knob allows for both manual and remote control volume adjustment while keeping the audio in a pure analogue audio path.



Class A Headphone Amp and Pre-Amp

Fully balanced analogue inputs and outputs, purely analogue volume control, and an adjustable headphone gain switch.


Toroidal Power Supply

A custom OPPO transformer provides clean power with plenty of energy reserves.


Mobile Device Support

Bluetooth with Apt-X codec for high quality wireless audio and a USB input for mobile phones and tablets.

ESS 9018 Sabre32 Reference DAC

High resolution performance with extremely low noise and distortion.


High Definition Audio Support

Numerous digital inputs including coaxial, optical, AES/EBU, and an asynchronous USB DAC input that supports PCM, DSD64 and DSD128.


Display Driven Interface

Physical volume and source selection knobs frame a 4.3-inch display for easy operation.

High Performance Audio

The HA-1 is especially suitable for high-resolution digital audio playback. Its digital inputs include coaxial, optical, balanced AES/EBU, and an asynchronous USB DAC. It is easy to connect the HA-1 to digital audio players or to a computer running your favourite playback software. The USB DAC supports PCM audio up to 384 kHz 32-bit resolution and DSD audio up to 256x the CD sample rate.

The same ESS 9018 Sabre32Reference DAC and output driving stage used in OPPO audiophile Blu-ray players ensure extremely low noise and low distortion performance. The HA-1 is compatible with Apple’s iPod, iPhone and iPad for use as an external DAC, enabling you to directly tap into digital music played from these devices. For additional convenience, the Bluetooth audio transport with high quality aptX CODEC sets music free from your mobile phones with a performance boost.


We designed the HA-1 headphone amplifier with the same versatile approach as our Blu-ray players. The HA-1 is a high performance headphone amplifier, and it doubles as an asynchronous USB DAC, a stereo pre-amplifier, a digital audio dock for mobile devices, and a Bluetooth audio transport. Users have a choice of using the 4-pin balanced XLR or the traditional quarter-inch headphone jack. Line level analogue inputs and outputs are provided with both RCA and balanced XLR sockets.

The HA-1 sports a classic design with contemporary elements. It is a desktop component housed in an aluminium chassis, and the familiar volume and source selection knobs are complemented by a 4.3-inch colour screen for easy operation. While music is playing, the screen can show a classic VU meter, a modern spectrum display, or detailed technical information about the audio signal. A supplied IR remote and a smartphone app provide complete control and convenience.


Remote Control App

The OPPO Remote Control app provides a convenient way to control your OPPO HA-1 Headphone Amplifier from your mobile device via Bluetooth. You will be able to switch input sources, adjust volume, mute/unmute audio, set the screen brightness level, and even control playback of digital audio sources.




Dimensions (W x H x D) 254 x 80 x 333 mm
Weight/td> 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 3.5 V – 15 V, 10mA minimum
Trigger Output 12 V, 100 mA maximum
Operating Temperature 5 °C - 35 °C
Operating Humidity 15% - 75% No condensation
Recommended Headphone Impedance 32 ohm – 600 ohm
Balanced Headphone Jack Output (XLR-4) Pin order 1: L+, 2: L-, 3: R+, 4: R-, Shell: GND
6.35 mm Headphone Jack Output Pin order Tip: L, Ring: R, Sleeve: GND
XLR Balanced Audio Input
Input Impedance 15k ohm
Maximum Input Level 18 Vrms, +27.3 dBu (0 dBu = 0.775 Vrms)
RCA Stereo Audio Input
Input Impedance 10k ohm
Maximum Input Level 9 Vrms, +21.3 dBu (0 dBu = 0.775 Vrms)
Coaxial, Optical, AES/EBU Digital Inputs
Input Format Stereo PCM
Sampling Frequencies 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz,
176.4 kHz, 192 kHz
Word Length 16-bit, 24-bit
USB DAC Audio Input (USB B Type)
Input Format Stereo PCM, Stereo DSD (DoP v1.1 or native)
PCM Sampling Frequencies 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz,
176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz
PCM Word Length 16-bit, 24-bit, 32-bit
DSD Sampling Frequencies 2.8224 MHz (DSD64), 5.6448 MHz (DSD128),
11.2896 MHz (DSD256, native mode only)
Profile USB 2.0, USB Audio 2.0
Mobile USB Audio Input (USB A Type)
Input Format Stereo PCM
PCM Sampling Frequencies 44.1 kHz, 48 kHz
Profile USB 2.0, USB Audio 2.0
VBUS Power Output +5 V, 2.1 A
Bluetooth Audio Input
Standard Bluetooth 2.1+EDR
Profile iAP, SPP, AVRCP, A2DP
Audio Transmission Format SBC, aptX

DAC Performance Specifications

  XLR Output RCA Output
Output Level 4.6 ± 0.3 Vrms 2.3 ± 0.3  Vrms
Frequency Response
(Tested with -10 dBFS / 384 kHz)
10 Hz – 170 kHz (+0/-3 dB)
20 Hz – 20 kHz (+0/-0.07 dB)
10 Hz – 170 kHz (+0/-3 dB)
20 Hz – 20 kHz (+0/-0.07 dB)
THD+N at 1 kHz (A Weight, 20 Hz – 20 kHz) < 0.00056% (< -105 dB) < 0.00056% (< -105 dB)
Channel Separation > 105 dB > 105 dB
Signal-to-Noise Ratio
(A Weight, 20 Hz – 20 kHz)
> 115 dB > 113 dB
Dynamic Range
(1 kHz -60 dBFS, A Weight, 20 Hz – 20 kHz)
> 115 dB > 113 dB

(Test condition: USB DAC input in Home Theater Bypass mode and the volume knob at Max position.)

Pre-amplifier Performance Specifications

  XLR Input – XLR Output RCA Input – RCA Output
Rated Output Level 4.6 Vrms 2.3 Vrms
Frequency Response 10 Hz – 200 kHz (+0/-2 dB)
20 Hz – 20 kHz (+0/-0.04 dB)
10 Hz – 200 kHz (+0/-2 dB)
20 Hz – 20 kHz (+0/-0.04 dB)
THD+N at 1 kHz (A Weight, 20 Hz – 20 kHz) < 0.00056% (< -105 dB) < 0.00071% (< -103 dB)
Channel Separation > 120 dB > 110 dB
Signal-to-Noise Ratio
(A Weight, 20 Hz – 20 kHz)
> 110 dB > 105 dB
Dynamic Range
(1 kHz -60 dB,  A Weight, 20 Hz – 20 kHz)
> 120 dB > 115 dB
Maximum Gain (100 mVrms input) 6 dB 6 dB

(Test condition: Volume knob at Max position and an input signal to drive the output to the rated output level.)

Headphone Amplifier Performance Specifications

  Condition XLR Input - Balanced Output RCA Input - 6.35 mm Output
Maximum Output Power (Per Channel) Into 600 Ohm 2400 mW 600 mW
Into 32 Ohm 3000 mW 3500 mW
Rated Output Power
(Per Channel)
Into 600 Ohm 800 mW 200 mW
Into 32 Ohm 2000 mW 500 mW
Frequency Response 10 Hz – 200 kHz (+0/-1 dB)
20 Hz – 20 kHz (+0/-0.04 dB)
10 Hz – 200 kHz (+0/-1 dB)
20 Hz – 20 kHz (+0/-0.04 dB)
THD+N at 1k Hz
(A Weight, 20 Hz – 20 kHz)
Rated Power < 0.0018% (< -95 dB) < 0.0056% (< -85 dB)
50 mW < 0.001% (< -100 dB) < 0.0022% (< -93dB)
Channel Separation > 120 dB > 90 dB
Signal-to-Noise Ratio
(A Weight, 20 Hz – 20 kHz)
> 111 dB > 111 dB
Dynamic Range
(1 kHz -60 dB, A Weight, 20 Hz – 20 kHz)
> 120 dB > 115 dB
Output Impedance 0.5 Ohm 0.7 Ohm

(Test condition: Volume knob at Max position and an input signal to drive the output with 600 Ohm loads to the rated output power, unless otherwise noted.)


"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).




"It’s so good, we’d even suggest the HA-1 as a system anchor even if you aren’t a headphone enthusiast.  There’s no better building block for a reasonably priced, high performance audio system than the OPPO HA-1."

January, 2015

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Positive Feedback

"I have given the Oppo HA-1 and PM-1 Positive Feedback Brutus Awards in 2014 for their fine performance and exceptional value. They are certainly not leaving here; I am adding them to my standard reference desktop system here at Positive Feedback for quality and value. If you are a desktop system/personal fi/headphone lover, you should do the same…."

January, 2015

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"Oppo has a long history of building well-respected high-value products, but in my view the HA-1 stands as the firm’s best all-around effort to date. What is impressive is not just the number of roles the HA-1 can play (as a high-performance headphone amp, preamp, and DAC), but the astonishing sonic sophistication that it brings to each of those roles."

February, 2015

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Sound & Image Awards, 2015

"Leonard Cohen's vocal on 'Going Home' was perfectly presented with all it's depth and roundness in the centre, the elements around him resolved and delivered as individual elements"

December, 2014

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StereoNet Australia

"Great sound in context, seems to carry more weight in the mind, and I found myself actually listening to whole albums rather than only selected tracks. Overall, the HA-1 and PM-1 Headphone and Amplifier combination far exceeded my expectations in sound quality and features for headphones, and anyone who invests in this headphone set should not be disappointed."

September, 2014

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C Net

"The OPPO HA-1 headphone amplifier is definitely a slam-dunk for audiophiles. The HA-1's ability to reveal more low-level detailing was immediately apparent. I could hear more of my recordings' reverberation and ambience. The "spaces" between instruments in a stereo image were deeper, so the sound had a more three-dimensional presence."

August, 2014

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Headfonics - HA-1

"Nothing on the market has a price to features and performance ratio like this. The HA-1 is in a class all by itself. OPPO has achieved something few others have. I seriously doubt anyone is going to offer another DAC/amp in this price tier that offers this level of clarity as well as 1 up OPPO with even more features. OPPO shot for the moon and ended up on Mars."

July, 2014

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Mac Edition Radio - HA-1

"The Oppo HA-1 headphone amplifier is one of the most versatile audio products I’ve ever used, and at its $1,799 price point I can’t imagine any manufacturer of DACs, Pre-Amps, and headphone amplifiers who shouldn’t be paying strict attention. This is a superb product that we can find no faults whatsoever with, and whose sonics rank among the finest we have heard."

June, 2014

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Computer Audiophile - HA-1

"OPPO is currently unchallenged at its price point. It is so much more than a headphone amplifier in the same fashion that an OPPO player is so much more than just a Blu Ray transport. Innovation, durability, flexibility and enough connectivity specs to make your head spin give this little contender both it's charm and it's value. It's on hand compatibility paired with a sleek digital side makes it one of the most complimentary components for desktop listening in the sub $2000 range."

June, 2014

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Audioholics - HA-1

"If you thought that $1,799 was a lot to ask for a simple headphone amplifier, you might be right. However, this OPPO is much more: the HA-1 is a true 21st century, reference grade stereo preamplifier in a compact chassis which also happens to boast a high quality headphone amplifier. Viewed in that light, the asking price becomes a relative bargain; add a laptop or tablet and a quality set of headphones like the aforementioned PM-1’s, and you’ve got a recipe for audio nirvana."

June, 2014

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Product Faqs

  • What can I plug into my DAC?

    DAC's will usually have a number of inputs. Coaxial and Toslink Optical are the most common, while USB is still also very common.

    The Optical and Coaxial connections can have a CD player, network streamer, television, dvd/blu-ray disc player, game console, and some computers.

    The USB input can handle pretty much any kind of computer, or a phone with the appropriate adapter (OTG for android, Camera Connect Kit for iOS devices).

  • What is a DAC?

    Every digital device with an analog output has a Digital to Analog Converter of some kind. In the case of phones, televisions, and computers, they are usually stuck on as an afterthought, or just to do the job of creating analog sound to be amplified and played through speakers.

    Having a standalone DAC is a worthwhile investment in any modern Hi-Fi system, essentially all the circuitry involved in creating that signal you can hear from the 1's and 0's is housed in its own box, with usually a much better design than what you would find in your television or computer.

    A DAC can be useful to connect digital devices to an analog amplifier if the amplifier doesn't have digital inputs. Or if you are after a cleaner, more refined sound.

    Things to listen for in higher quality DAC's are separation of sounds (how well you can hear a single voice or instrument in the mix of all the others), "textures" of sounds (raspyness of a bow being drawn across the strings of a double bass), or the clarity of echo's and quiet noises among loud instruments.