More Information about OPPO HA-1 Special Edition DAC Headphone Amplifier
Overview
- Revised and Optimised for Digital or Analogue Sources.
- Less noise - Listen to the Music.
- Captivating Sound Quality from your Headphones.
- Optional balanced XLR headphone socket, RCA or XLR sockets for analogue inputs and outputs.
- Hand selected componentry for power supplies and signal paths.
- Accepts worldwide voltage 100 ~ 240V AC.
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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 premium audio grade “New Old Stock” parts. The backbone of the upgrade is “ultra-low noise regulation” which supply the DAC analogue, pre-amp and headphone amplifier sections. Conventional regulators are replaced with discrete, ultra-low types which have 1/168 output noise and nearly 2000 times the Ripple noise rejection (PSRR).
HA-1 SE has a tonality that’s very engaging, but thanks to the extremely quiet noise floor it is also a tour-de-force when it comes to extract the minutest detail and intricacies of recordings through your headphones, allied with excellent musicality.
Play LossLess files from an Apple Macbook via the USB B input, or 16 /44.1 through S/PDIF and it won’t falter in its ability to convey the life and soul of the music. Similarly, partner the HA-1 SE with a high quality stereo power amplifier and its musical skills as a pre-amplifier deliver performance way beyond its price point.
Specification
General
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