For Sale: Oppo HA-1 DAC / Pre-amp / Balanced Headphone Amp

[willbewill]

For Sale: Oppo HA-1 DAC / Pre-amp / Balanced Headphone Amp

In excellent condition complete with original packaging.

Price £650.00 including insured delivery to UK destinations payable by paypal (friends and family/gift payment).

In addition to being a 384/24 and DSD 256 capable DAC, it is also a full function analogue pre-amp with balanced inputs and outputs. And it has balanced and single ended headphone outputs, and is an ideal partner for the likes of Sennheiser H600s and 800s.

Digital Inputs - Coax, Optical, AES/EBU and USB, Bluetooth AptX, plus front USB port for phones/tablets
Analog inputs - 1 pair RCA, 1 pair XLR
Outputs - same as above.
All the inputs & outputs are clearly marked on the back panel so can be seen on the photos.
The remote control can switch inputs, control volume and dim or switch off the display which itself has various modes.
All inputs can be individually set to unity gain - e.g. if you want to use it as a standalone DAC with another preamplifier














Specs are here:
https://www.oppodigital.com/headphone-amplifier-ha-1/

I have the manual and all original packaging.

Some Review Information
Best known for its high-performance, high-value universal disc players, Oppo has expanded into the high-end headphone and personal audio electronics marketplace. First came the firm’s flagship PM-1 planar-magnetic headphones, and now we have the long-awaited HA-1 desktop headphone amplifier/DAC (£1,199), which effectively completes Oppo’s premium headphone system.
The HA-1 borrows analogue and digital audio technologies from the firm’s award-winning BDP-105-series disc players, but then ups the performance ante in several respects. To begin, the HA-1 provides a broader set of digital inputs and two sets of analogue inputs, giving owners outstanding flexibility in source selection.
Also, like the BDP-105D, the DAC section of the Oppo HA-1 is based on the ESS 9018 Sabre32 Reference DAC. This supports PCM formats up to 32-bit/384kHz and DSD files ranging from DSD64 on up to DSD256. The HA-1 is supported native in Mac-based systems, but needs an Oppo-supplied driver set for use in Windows environments.
By design, Oppo’s HA-1 supports a different and somewhat broader set of roles than its disc players. Thus, it can be used as a conventional high-end stereo DAC, as an analogue/digital preamplifier (complete with home theatre bypass), or as a high-powered and full-featured headphone amplifier/DAC sporting both digital and analogue inputs.
The analogue amplifier section of the HA-1 is a fully balanced design, based on discrete Class A circuitry. In exchange for that extra bit of heat Class A brings to the party, listeners enjoy extra precision and clarity, plus all of the high gain/low-noise benefits that fully balanced amplifier circuits confer. Oppo takes an unabashedly purist approach to its balanced circuit topology, emphasising that, “For digital audio, the signal runs in balanced mode all the way from the DAC to the output jacks.” Further, Oppo stresses that the HA-1’s, “balanced analogue input is kept intact, and (the) single-ended input is converted to balanced at the input buffer.”
The HA-1 provides both a single-ended headphone output (via a 6.35mm headphone jack) and a balanced headphone output (via a 4-pin XLR connector). In balanced mode the amp delivers output of 800 mW @ 600 Ohms or 2000 mW into 32 Ohms, while in single ended mode the amp delivers 200mW @ 600 Ohms or a 500mW @ 32 Ohms. Frequency response is quoted at 10 Hz – 200 kHz (+0B/-1dB) or 20 Hz – 20 kHz (+-/-0.04dB).

SPECIFICATIONS
General
Dimensions (W x H x D)10.0 x 3.6 x 13.1 inches, 254 x 91 x 333 mm
Mass13.0 lbs, 5.9 kg
Power SupplyAC 110-120 V~ / 220-240 V~, 50/60 Hz auto-sensing
Power Consumption70 W (operation), 0.5 W (standby)
Trigger Input3.5 V – 15 V, 10mA minimum
Trigger Output12 V, 100 mA maximum
Operating Temperature41 °F - 95 °F, 5 °C - 35 °C
Operating Humidity15% - 75% No condensation
Recommended Headphone Impedance32 ohm – 600 ohm
Balanced Headphone Jack Output (XLR-4) Pin order1: L+, 2: L-, 3: R+, 4: R-, Shell: GND
6.35 mm Headphone Jack Output Pin orderTip: L, Ring: R, Sleeve: GND
XLR Balanced Audio Input
Input Impedance15k ohm
Maximum Input Level18 Vrms, +27.3 dBu (0 dBu = 0.775 Vrms)
RCA Stereo Audio Input
Input Impedance10k ohm
Maximum Input Level9 Vrms, +21.3 dBu (0 dBu = 0.775 Vrms)
Coaxial, Optical, AES/EBU Digital Inputs
Input FormatStereo PCM
Sampling Frequencies44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz,
176.4 kHz, 192 kHz
Word Length16-bit, 24-bit
USB DAC Audio Input (USB B Type)
Input FormatStereo PCM, Stereo DSD (DoP v1.1 or native)
PCM Sampling Frequencies44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz,
176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz
PCM Word Length16-bit, 24-bit, 32-bit
DSD Sampling Frequencies2.8224 MHz (DSD64), 5.6448 MHz (DSD128),
11.2896 MHz (DSD256, native mode only)
ProfileUSB 2.0, USB Audio 2.0
Mobile USB Audio Input (USB A Type)
Input FormatStereo PCM
PCM Sampling Frequencies44.1 kHz, 48 kHz
ProfileUSB 2.0, USB Audio 2.0
VBUS Power Output+5 V, 2.1 A
Bluetooth Audio Input
StandardBluetooth 2.1+EDR
ProfileiAP, SPP, AVRCP, A2DP
Audio Transmission FormatSBC, aptX
DAC Performance Specifications
SpecificationXLR OutputRCA Output
Output Level4.6 ± 0.3 Vrms2.3 ± 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> 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
SpecificationXLR Input – XLR OutputRCA Input – RCA Output
Rated Output Level4.6 Vrms2.3 Vrms
Frequency Response10 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% ( 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 dB6 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
SpecificationConditionXLR Input - Balanced OutputRCA Input - 6.35 mm Output
Maximum Output Power (Per Channel)Into 600 Ohm2400 mW600 mW
Into 32 Ohm3000 mW3500 mW
Rated Output Power
(Per Channel)Into 600 Ohm800 mW200 mW
Into 32 Ohm2000 mW500 mW
Frequency Response10 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% ( 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 Impedance0.5 Ohm0.7 Ohm

[struth]

quality bit of kit

[willbewill]

quality bit of kit

Thanks Grant, I love it but it's not being used now since I've reduced my box count.

[Vince]

A blistering headphone amp/pre amp.
When I bought mine I listened to quite a few and the Oppo always came out on top. I use Sennheiser HD 800 and Oppo PM3 and it drives them with tons of power to spare. I listened to some headphone amps costing quite a bit more and again the Oppo took first prize. Non of the headphones I listened to were no where as flexible and not many have a remote control. The display is excellent,(3 choices), and can be turned off.
I took mine to a Nebo a few years ago and everyone agreed it was superb as a pre amp.
Glws

[Gazjam]

Great sounding Dac in this, heard Vince’s at NEBO as well as another elsewhere, quality kit.

[willbewill]

Still available

[ianlenco]

This is a belter of a preamp and the DAC is superb too. I know nothing of the headphone inputs but even though I don't use phones I'd buy this like a shot if I needed a preamp.

[Majsterjanek]

You’ve got a pm Will

[willbewill]

You’ve got a pm Will

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[willbewill]

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