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Desktop/Portable Headphone Amplifier
Oppo Desktop Headphone Amplifier *HA-1*

Discrete Class A Balanced Headphone Amplifier
Asynchronous USB DAC Up to 384 kHz and DSD256
Compatible with iPod/iPhone/iPad and Bluetooth
Stereo Pre-Amplifier with Home Theater Bypass

Desktop Headphone Amplifier with a 1 year agent warranty, made in China !!!!


  • Tone Audio Product Of The Year`2014 *****

  • "... these two components not only give you a world class personal audio system for a tick over two grand, they give you the foundation for a fantastic two-channel hifi system as well ..."

  • SECRETS Best of 2014 Awards Headphone Amplifier`2014 *****

  • "... it's gorgeous to look at and dazzling to listen to."

  • Audiophile Product Of the Year`2014 *****

  • "In my opinion, If you re serious about hi-res via headphones, the Oppo HA-1 is a must buy."

    The analog audio section of the HA-1 is a fully balanced design with an emphasis on keeping the audio signal in the analog 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 analog audio path.

    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 the listener’s favorite 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 Sabre32 Reference 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 the listener 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.

    OPPO designs the HA-1 headphone amplifier with the same versatile approach as the 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 analog 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 aluminum chassis, and the familiar volume and source selection knobs are complemented by a 4.3-inch color 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.

  • Dimensions (W x H x D) - 254 x 91 x 333 mm
  • Mass - 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)
  • Recommended Headphone Impedance - 32 ohm – 600 ohm
  • XLR Balanced Audio Input Impedance - 15k ohm
  • XLR Balanced Audio Maximum Input Level - 18 Vrms, +27.3 dBu
  • RCA Stereo Audio Input Impedance - 10k ohm
  • RCA Stereo Audio Maximum Input Level - 9 Vrms, +21.3 dBu
  • Coaxial, Optical, AES/EBU Digital Input Format - Stereo PCM
  • Digital Inputs Sampling Frequencies - 44.1 kHz, 48 kHz, 88.2 kHz
  • Digital Inputs Sampling Frequencies - 96 kHz, 176.4 kHz, 192 kHz
  • Digital Inputs Word Length - 16-bit, 24-bit
  • USB DAC Audio Input (USB B Type) Format - Stereo PCM, Stereo DSD
  • USB DAC Input PCM Sampling - 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
  • USB DAC Input PCM Sampling - 176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz
  • USB DAC Audio Input PCM Word Length - 16-bit, 24-bit, 32-bit
  • DSD Sampling Frequencies - 2.8224 MHz, 5.6448 MHz,11.2896 MHz
  • Profile - USB 2.0, USB Audio 2.0
  • Bluetooth Audio Input - Bluetooth 2.1+EDR
  • Bluetooth Audio Input Format - SBC, aptX
  • Finish: Black
  • Oppo Desktop Headphone Amplifier *HA-1* S$1,799.00
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