Oppo HA-1 (Headphone Amplifier, DAC & Pre-Amplifier)

by subval999 Tue Mar 13, 2018 1:43 pm

Stereo Pre-Amplifier with Home Theater Bypass

Discrete Class A Balanced Headphone Amplifier, Asynchronous USB DAC Up to 384 kHz and DSD256, 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.

SPECIFICATIONS

General
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

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

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
Maximum Output Power (Per Channel)	Into 32 Ohm	3000 mW	3500 mW
Rated Output Power (Per Channel)	Into 600 Ohm	800 mW	200 mW
Rated Output Power (Per Channel)	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)
THD+N at 1k Hz (A Weight, 20 Hz – 20 kHz)	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

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Selling for RM 3,900.00 (negotiable for serious buyer) Please contact 012-3090744 (Subra) to deal. This unit is not meant for low ballers.

Following is the photos of the actual unit. No box but comes with complete and full accessories. Remote is wrapped with removable plastic for protection.