OPPO HA-1

I am the original owner, having purchased direct from Oppo.  I am hesitant to sell, since I have been so impressed with this product.  But I recently upgraded at 9x the price, and have not been using this, and don’t have a place where I can use this.

This has been pampered, in a clean, climate-controlled space, protected electrically by a PS Audio Powerplant. There are no imperfections that I can detect.  I never removed the protective film from the screen.  So, the images of the screen may not accurately represent condition, due to interference from the protective film.

Includes all original accessories and packaging.

The information below is from Oppo’s website.

ALL CLAIMS OF COMPATIBILITY AND FEATURES ARE BY THE MANUFACTURER AND ARE NOT GUARANTEED BY THE SELLER.

HIGH PERFORMANCE AUDIO

• Discrete Class A Amplifier
  A Class A amplifier conducts signal over the entire range of the input signal cycle. The output transistors are biased to operate in their most linear range, and there is no crossover distortion caused by switching the signal between two push-pull devices. The HA-1's power amplification circuit for the headphones is Class A built with discrete transistors. The discrete design allows us to hand-pick and match the best parts to build the HA-1.
  


• Toroidal Power Supply
  A toroidal power transformer offers superior power efficiency and much lower exterior magnetic fields over traditional laminated steel core transformers. The HA-1's toroidal linear power supply provides a very clean and robust power source to the audio components.
  


• Fully Balanced Design
  The internal analog audio signal path of the HA-1 is fully balanced. For digital audio, the signal runs in balanced mode all the way from the DAC to the output jacks. Balanced analog input is kept intact, and single-ended input is converted to balanced at the input buffer. All single-ended outputs are derived from the balanced signal as well. The balanced design provides better common-mode noise rejection and improves signal quality. The balanced headphone output provides twice the voltage and four times the power of the single-ended output, enabling the HA-1 to drive the most power hungry headphones. It also provides better channel seperation by eliminating the common ground return path.
  


• ESS Sabre32 Reference DAC
  The AC is one of the most important components for digital audio playback. The SABRE32 Reference ES9018 from ESS Technology is the world’s best performing 32-bit audio DAC solution targeted for high-end consumer applications and professional studio equipment. With the ESS patented 32-bit Hyperstream™ DAC architecture and Time Domain Jitter Eliminator, the SABRE32 Reference DAC delivers an unprecedented DNR (Dynamic Range) of up to 135dB and THD+N (Total Harmonic Distortion plus Noise) of -120dB, the industry’s highest performance level that will satisfy even the most demanding audio enthusiast. To learn more about the technologies behind the exceptional performance of the SABRE DAC, please read the SABRE Technical White Paper.
  


• Clean Signal Path
  The HA-1 uses an analog potentiometer (the familar volume knob) to control the volume. By avoiding re-digitizing the audio signal for volume adjustment, the HA-1 provides a clean signal path for the audio. At the same time, the convenience of modern digital volume control is not lost - a remote-controlled motor turns the volume knob and a 10-bit analog-to-digital converter samples the signal to display a numeric dB level.
  


• Made for iPod®, iPhone® and iPad®
  The HA-1 passes Apple's "MFi" certification and is compatibile with the latest iPod, iPhone and iPad to be used as the digital audio output accessory of these devices. By tapping directly into the digital audio signal of these devices and converting the audio to analog using the high performance SABRE32 Reference DAC, music from your favorite portable device will sound its best.
  


• Wireless Audio via Bluetooth
  The HA-1 supports Bluetooth Advanced Audio Distribution Profile (A2DP) with both the standard and aptX® high quality codec. Simply pair your phone with the HA-1 and set music free wirelessly from your mobile phone.
  


• Asynchronous USB DAC
  By bypassing the low fidelity, poor quality DAC of traditional computer soundcards, the HA-1 turns any computer into a high performance multi-media source by converting digital audio to analog through the ESS Sabre32 Reference DAC. The asynchronous transfer mode uses the high precision clock inside the HA-1 to drive the audio signal, not relying on the clock quality of the computer. HA-1's USB DAC input supports PCM up to 384 kHz 24-bit and DSD up to 12 MHz (DSD256).
  


• Adjustable Gain Setting
  The headphone power amplifier has an adjustable gain setting. For optimal sound quality and to best match your headphones' sensitivity, you can choose between Normal and High for the Headphone Gain setting.
  


• Build Quality
  The HA-1 is housed in a brushed aluminum chassis. The Class A amplifier naturally consumes more power and generate more heat than other types of amplifiers, so the HA-1 is designed with ample ventilation and built with the finest components to ensure long term stability and performance. Tipping the scale at 13 lbs, the HA-1 is a solidly built desktop headphone amplifier.
  


• Stereo Pre-Amplifier with Home Theater Bypass
  The HA-1 doubles as a high fidelity stereo pre-amplifier with both RCA and XLR output ports. A special "Home Theater Bypass" mode can be assigned to any input source, making it very easy to integrate the HA-1 as a stereo pre-amplifier into a home theater sound system.
  


• Trigger Input & Output
  The HA-1 features 12V trigger input and output. When used as a stereo pre-amplifier, the trigger output can turn on your power amplifiers automatically when the HA-1 is turned on. You can also turn on the HA-1 automatically by connecting its trigger input to the trigger output of a source device or a surround sound processor.
  


• Remote Control & App
  The HA-1 comes with a remote control that provides volume control, direct source selection and even playback control for digital audio sources. A remote control app is available for both Apple's iPhone and Android-based smartphones. The app works over Bluetooth and offers the same functionality as the physical remote control.
  

SPECIFICATIONS

General Specifications

Dimensions (W x H x D)
10.0 x 3.6 x 13.1 inches, 254 x 91 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
3.5 V – 15 V, 10mA minimum

Trigger Output
12 V, 100 mA maximum

Operating Temperature
41 °F - 95 °F, 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

Specification
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

Specification
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

Specification
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).

All trademarks are the property of their respective owners.