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OPPO HA-1 Special Edition (SE)

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“Is the HA-1 SE a new benchmark? Yes absolutely!” – HDFever June 2016  

"For me the HA-1 SE is not only a major achievement, it is a true masterpiece. At this price tag, if you do not own it already, go get one! If you already have a HA-1 get it upgraded to SE on the double!” – HDFever June 2016 

The OPPO HA-1 Special Edition (SE) DAC headphone amplifier take this excellent OPPO platform to new sonic heights elevating sound quality from digital or analogue sources. So whether you wish to use the HA-1 as a USB DAC, stereo preamp or for Bluetooth streaming the SE version will engage you and get you closer to your favourite music.

To take the HA-1 further up the audio ladder required thinking outside the box. To get the performance lift we require takes over 40 component changes including many audio grade “New Old Stock” parts.

The heart of the HA-1 SE is ultra-low noise regulated power supplies for the DAC analogue, pre-amp and headphone amplifier sections. Conventional regulators are replaced with discrete, ultra-low noise types which have 1/168 output noise and nearly 2000 times the Ripple noise rejection (PSRR).

Digital and analogue audio sections have been revised and optimised for the power supplies and audio signal paths. Hand selected, audio grade components are used throughout and this combined with a very low noise floor preserves the tonal, spatial and dynamic reality of individual voices and instruments. 



Dimensions: (W x H x D) 10.0 x 3.1 x 13.1 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: 3.5 V – 15 V, 10 mA 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


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