★OPPO(오포)★ HA-1 Headphonamp/pre/Bluetooth
Discrete Class A Balanced Headphone Amplifier
Asynchronous USB DAC Up to 384 kHz and DSD256
Stereo Pre-Amplifier with Home Theater Bypass
Compatible with iPod/iPhone/iPad and Bluetooth
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.
General |
|
| Dimensions (W x H x D) | 10.0 x 4.8 x 12.2 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, 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 | > 113 dB |
(Test condition: USB DAC input in Home Theater Bypass mode and the volume knob at Max position.)
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 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
| Specification | Condition | XLR Input - Balanced Output | RCA Input - 6.35 mm Output |
| Maximum Output Power (Per Channel) | Into 600 Ohm | 2400 mW | 600 mW |
| Into 32 Ohm | 3000 mW | 3500 mW | |
| Rated Output Power (Per Channel) |
Into 600 Ohm | 800 mW | 200 mW |
| 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) |
| 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 | 0.7 Ohm | |
[단, 제품자체의 결함이 있을시 100% 환불 및 교환이 가능합니다.]
[단, 도서지역은 3일~5일 소요]
만약 배송이 지연될 경우 전화로 미리 연락드리겠습니다.
[상품 재고량 소진시 부득이한 경우 결재 취소 후, 환불해 드릴수있습니다.]
로딩 중...
2024.8.10 11:05
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