HA-2: Bộ khuếch đại âm thanh và DAC cầm tay

7,490,000.00 ₫

  • DAC/Amp nhỏ gọn, phù hợp với nhu cầu di động
  • Mạch DAC với chiop ESS9018K2m cao cấp, nâng cao chất lượng nghe nhạc cho các thiết bị Apple, Android và Mac.
  • 2 mức tăng âm phù hợp với nhiều loại tai nghe khác nhau.
  • Có thể làm sạc dự phòng với thời lượng pin 3000mAh
High-Resolution Audio
Meets Style and Design

HA-2 tuy là một sản phẩm DAC/amp thuần chất điện tử, song Oppo cũng đã tinh tế trong việc thiết kế, gia công. Toàn thân làm từ nhôm cao cấp, được bao bọc bởi một lớp da thật quý phái, khi kết hợp với các smartphone cao cấp sẽ tạo nên nét thẩm mỹ rất đặc trưng.

HA-2 sử dụng mạch amplifier class AB tiên tiến, rất uy lực nên có thể đánh tốt các loại tai nghe khác nhau. HA-2 không chỉ chơi nhạc PCM chất lượng 32bit/384kHz mà còn cả DSD256. HA-2 kết nối với các thiết bị iDevices, Android hoặc PC, Mac rất đơn giản và tiện lợi. Ngoài ra HA-2 còn có chức năng như một pin sạc dự phòng với pin có dung lượng 3000mAh.

  Ultra-slim Design
Thiết kế siêu mỏng, phù hợp với xu hướng thiết kế của các thiết bị di động hiện đại, đời mới.
ESS Sabre32 Reference DAC
Sử dụng chip giải mã 9018K2m đến từ Sabre, cho độ tĩnh nền tốt, méo tiếng thấp, giải mã được DSD có chất lượng siêu cao.
  High-Resolution Audio
Kết nối đơn giản, không cần sử dụng Camera kit hoặc cáp OTG. Hỗ trợ chất lượng 32bit/384kHz và cả DSD 12Mhz
  Multiple Devices Support
HA-2 kết nối rất đơn giản với iDevices, Android, Mac và PC.
  Rapid Charging
Công nghệ VOOC giúp sạc nhanh, tiện lợi.
  Mobile Power Bank
Có chức năng sạc, làm pin dự phòng cho thiết bị di động. Dung lượng pin 3000mAh.


Hỗ Trợ

Knowledge Base
Top Articles:
Using the HA-2’s Digital and Analog Volume Controls

See More Articles
OPPO HA-2 Portable Headphone Amplifier and DAC User Guide (PDF Format)
Release date: February 26, 2015

Software Driver
for USB Audio DAC:
If you would like to connect the HA-2 to a computer and use it as the computer’s sound output device, a software driver may be required.

For Windows computers (XP, Vista, Windows 7 and Windows 8): software driver download link (version 2.24, released on 2/23/2015). Please unzip the downloaded package and double-click on the “setup.exe” file, then follow the on-screen instructions to finish this installation. Select the HA-2 as your sound output device by setting “Control Panel -> Hardware and Sound -> Sound -> Playback” to “OPPO HA-2 USB Audio 2.0 DAC”.

For Mac computers, no software driver is required. Please set “System Preferences -> Sound -> Output” to “OPPO HA-2 USB Audio 2.0 DAC”.

For iOS and Android devices, no software driver is required. Currently there is no software driver available for Linux computers.

Hình Ảnh

Full View (High resolution file size: 2.76 MB) HA-2 Full View Vertical Position (High resolution file size: 1.90 MB) HA-2 Vertical Position Top Details (High resolution file size: 2.43 MB) HA-2 Top Details Top Side (High resolution file size: 2.43 MB) HA-2 Top Side Bottom Side (High resolution file size: 2.41 MB) HA-2 Bottom Side Right Side (High resolution file size: 3.20 MB) HA-2 Right Side HA-2 with OPPO PM-3 Planar Magnetic Headphones and Headphone Stand [Sold Separately] (High resolution file size: 6.69 MB) HA-2 with PM-3 and headphone stand Illustration of Ports and Controls (High resolution file size: 190 KB) HA-2 with PM-3 and headphone stand

Thông số kĩ thuật và tính năng

Quality and Convenience for the Mobile Generation

  • Hybrid Class AB Amplifier - The HA-2's power amplification circuit for the headphones is Class AB built with integrated circuits (ICs) and discrete transistors. The discrete transistor output stage uses hand-picked and matched parts. The output transistors are biased to operate in their most linear range for the critical small signal, and deliver their full potential when power is required.
Made for iPod, iPhone and iPad Made for iPod®, iPhone® and iPad® - The HA-2 passes Apple's "MFi" certification and is compatible with the latest iPod, iPhone and iPad to be used as the digital audio output accessory of these devices. By tapping directly into the digital audio signal of these devices and converting the audio to analog using the high performance SABRE32 Reference DAC, music from your favorite portable device will sound its best. Furthermore, for users with high-resolution music playback apps, the HA-2 does not require the use of a Camera Connection Kit (CCK). The data cables that come with your Apple device or the supplied Lightning cable is sufficient. Compatible with Android - The HA-2’s micro-USB input port works with Android devices that support USB OTG (USB On-The-Go) and USB Audio Class. A special USB OTG cable is supplied with the HA-2 to facilitate the connection. When used with a compatible Android device, the HA-2 can support the device's built-in music app, tones and notifications. Additionally, a high-resolution music playback app can use the HA-2 as its external DAC to play lossless PCM and DSD audio files. Audio-In and Line-Out - The HA-2 has a 3.5 mm Audio-In port to support portable music players that do not have a USB-compatible digital output. While the HA-2 is used with one of its USB digital input ports, the 3.5 mm jack acts as Line-Out for the USB DAC.
ESS Sabre32 Reference DAC - The DAC is one of the most important components for digital audio playback. The ES9018-K2M DAC chip used in the HA-2 is the mobile version of the ES9018S used in our award-winning HA-1 desktop headphone amplifier. With the ESS patented 32-bit Hyperstream™ DAC architecture and Time Domain Jitter Eliminator, the SABRE32Reference DAC delivers an unprecedented performance for mobile applications. To learn more about the technologies behind the exceptional performance of the SABRE DAC, please read the SABRE Technical White Paper. Asynchronous USB DAC - By bypassing the smartphone's built-in DAC and headphone amplification circuit that are often cost-constrained, the HA-2 turns a smartphone into a high performance digital audio player. The asynchronous USB DAC input of the HA-2 also works with PC and Mac computers to replace the built-in sound card and support high-resolution audio playback with PCM up to 384 kHz 24-bit and DSD up to 12 MHz (DSD256). Clean Signal Path - There is no DSP (Digital Signal Processor) in the HA-2. Volume control is operated by a combination of the DAC chip's internal digital volume control and an analog potentiometer (the familiar volume knob). Bass boost is performed by pure analog audio circuits. By avoiding re-digitizing the audio signal for volume adjustment or bass boost, the HA-2 provides a clean signal path for the audio. Bass Boost - For those who like a bit more punch and impact with their music, the HA-2 offers a Bass Boost function. With Bass Boost off, the HA-2 delivers a ruler-flat frequency response; with Bass Boost on, the HA-2 adds force and impact to the sub-bass region without muddling the important mid- to high-frequency bands.
  • Two Gain Settings - The HA-2 offers two gain level settings for optimal headphone matching. The High Gain mode is capable of driving large power-hungry headphones, delivering up to 300 mW into 16-Ohm headphones. The Low Gain mode is intended for sensitive In-Ear Monitor type earphones.
  • Rapid Charging - The HA-2 features patented VOOC rapid charging technology from OPPO. Using the supplied rapid charger, the internal battery can be quickly and safely charged to 75% capacity in about 30 minutes. It only takes approximately 90 minutes to fully charge the battery. A quick charge gives the HA-2 hours of operation time.
  • Mobile Power Bank - The HA-2 functions as an external battery pack to charge your mobile device. Utility and convenience are factors we wanted to address with the HA-2, so you can ditch the bulky spare battery pack and carry just the HA-2 with you mobile phone.
  • Build Quality - The HA-2 is housed in an aluminum chassis wrapped in genuine leather. The beveled metal edges and contrast stitching on the leather are eye-catching. Its fit and finish will instill a sense of pride when using the product. The HA-2 meshes equally well in the pocket of an urban Millennial or on the desk of a business executive.
Enjoying the OPPO HA-2


Designs and specifications are subject to change without notice.


Dimensions (W x H x D)

2.5 x 6.2 x 0.5 inches, 68 x 157 x 12 mm


6.2 oz, 175 grams

Frequency Response

20 Hz - 200 kHz

Audio-in Level

1 Vrms

Line-out Level

1 Vrms

Recommended Headphone Impedance

16 Ohm - 300 Ohm

Maximum Headphone Output Power

300 mW into 16 Ohm

220 mW into 32 Ohm

30 mW into 300 Ohm

Output Jacks

3.5 mm stereo headphone

3.5 mm stereo line-out

Input Ports

Analog: 3.5 mm stereo audio-in

Digital: USB A for iPod / iPhone / iPad; USB micro-B for smartphones with USB OTG feature and computers.

DAC Chip

ESS Sabre32 Reference ES9018-K2M

Input Format

Stereo PCM, Stereo DSD (DoP v1.1 or native)

PCM Sampling Frequencies

44.1 kHz  -  384 kHz, 16 / 24 / 32-bit

DSD Sampling Frequencies

2.8224 MHz (DSD64), 5.6448 MHz (DSD128), 11.2896 MHz (DSD256, native mode only)


USB 2.0, USB Audio 2.0

Included Accessories

Power Supply Unit (Rapid Charging Charger)

USB A - USB micro-B data and rapid charging cable

USB A - Lightning data cable (for Apple devices)

USB micro-B to micro-B data cable (for Android and other smartphones)

3.5 mm - 3.5 mm stereo audio cable

Silicone rubber band (2 pieces)

User guide and warranty documents


Built-in Battery type

3000 mAh lithium polymer rechargeable battery

Battery Operation Time

Approx. 13 hours for analog source via Audio-in; approx. 7 hours for digital sources via USB

Charging Time

Approx. 1 hour 30 minutes

“Made for iPod”, “Made for iPhone”, and “Made for iPad” mean that an electronic accessory has been designed to connect specifically to iPod®, iPhone®, or iPad®, respectively, and has been certified by the developer to meet Apple performance standards. Apple is not responsible for the operation of this device or its compliance with safety and regulatory standards. Please note that the use of this accessory with iPod, iPhone, or iPad may affect wireless performance.

iPad, iPhone, iPod and iPod touch® are trademarks of Apple Inc., registered in the U.S. and other countries.

Compatible iPod/iPhone/iPad Models USB works with iPhone 6, iPhone 6 Plus, iPhone 5S, iPhone 5C, iPhone 5, iPhone 4S, iPad (4th generation), iPad mini, iPod touch (5th generation).

The HA-2's USB input B works with Android devices that support USB OTG (USB On-The-Go) and USB Audio Class. Not all devices are compatible.

Android is a trademark of Google Inc.

All trademarks are the property of their respective owners.

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