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Oppo HA-2 Portable Headphone Amplifier

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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® - 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 analogue using the high performance SABRE32 Reference DAC, music from your favourite 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 analogue audio circuits. By avoiding re-digitising the audio signal for volume adjustment or bass boost, the HA-1 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 aluminium chassis wrapped in genuine leather. The bevelled 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.

Dimensions
(W x H x D)
2.7 x 6.2 x 0.5 inches,
68 x 157 x 12 mm
Weight 6.2 oz, 175 grams
Frequency Response 20 Hz – 200 kHz
Audio-in Level 1 Vrms
Line-out Level 1 Vrms
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 3.5 mm stereo audio-in;
USB A;
USB micro -B;
DAC Chip ESS Sabre 32 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)
Profile USB 2.0, USB Audio 2.0
Built -in Battery type 3000 mAh lithium polymer rechargeable battery
Battery Operation Time Approx. 13 hours for analogue source via Audio-in;
Approx . 7 hours for digital source s via USB
Charging Time Approx. 1 hour 30 minutes

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For other areas please contact us for a quote. Select items can be delivered internationally by prior agreement. Again please contact us for a quote. We will always do our best to help.

Our aim is to dispatch goods within 2 working days of an order being placed. Please allow 5 working days from the time of your order to receipt of item. If an order is expected to take longer than this our order fulfillment department will contact you to inform you of this.

Where multiple items are ordered, we will dispatch them all in one package. If you have ordered any special or customized items, or items otherwise not immediately available, we will dispatch the order when all items are available. If you have any concerns regarding this, please contact us and we will do are very best to help you.

Oppo HA-2 Portable Headphone Amplifier (HA2)




Nintronics offers generous trade in prices to help make your next upgrade as seamless as possible, while greatly reducing the overall price of your purchase. Depending upon the items involved, Nintronics will be happy to send out one of our nationwide installation engineers to collect your traded in items and unbox, setup and calibrate your new equipment.

Oppo HA-2 Portable Headphone Amplifier (HA2)

"Please include age, condition, make, model and serial numbers of the units you wish to trade in. Please note if you have the original accessories, boxes, invoice etc... This will help with increasing your trade in value."




Nintronics Ltd, Unit 7, Martinfield Business Centre, Welwyn Garden City, AL7 1HG
Tel: 01707 320788 Email: sales@nintronics.co.uk

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