The original innovator comes from OPPO's good voice: OPPO HA-2 headphone amplifier

First put the link first

Appearance and design

Since no photos were left when the box was unpacked, it is now simple to attach two packages.

HiRes series standard appearance

Simple specifications and usage introduction

Not many accessories after opening the package, host, VOC, flashing cable, lighting cable, 3.5mm-3.5mm cable, micro usb-micro usb cable, and two straps

Although the accessories do not have such a gorgeous host, but it is actually enough, and the accessories workmanship is also good, consistent with the OV's consistent style. Sending VOOC flashes really fast, half an hour can be washed more than half, compared to the iphone's little faucet really do not know how much powerful, but have to say is that this charge head is really huge, very easy to carry.

5V 4A power adapter

bottom

At the bottom of the device is a mode switch, USB interface, Micro usb interface, the mode switch has three gears: when sliding to the A mode position, the default through the standard USB interface to receive digital signals from the iOS device, this time you can also charge the device (Note: It is not possible to charge the amp while charging the ios device.) When sliding to the position of Mode B, the digital signal from the PC/Android is accepted through the B interface (Note: Android must support the OTG function). When you need to consume the power from the output device; the last is the best compatibility mode, when you switch to the C position, you receive the analog signal from the device through the 3.5mm interface. Although the device can use this as long as there is a 3.5mm interface The mode, but in this mode the improvement of the sound quality is very limited, the amp only plays the role of amplifying the signal, the sound is only a little bit of change, the thrust will have a certain increase. When using the A mode and the B mode, the battery life is about seven hours. When using the C mode, it is about thirteen hours (the data comes from the official). The actual use can be used for the iPhone without charging. It can be used for one day. The next morning can be charged for one hour. Full of blood resurrection, to iphone6 ​​as a mobile power charge can be charged from 20% to 90%, emergency use is awesome, and now do not have to go out with mobile power.

side

Side from top to bottom there is a row of lights, a button, two paddles. The first light is the mobile power status display. The light indicates the power supply to the external device. At this time, it is equal to the mobile power (does not affect the audio decoding of the ios device, but the ios device cannot be powered to the amp itself. The four lights are power indicators, each representing 25% of the power, the lights will flash in sequence when charging, using VOOC to charge fast, the lights to flash faster, when using ordinary charging, the speed of light flashes will decrease. Indicating the charging speed, the following is the bass gain switch. When dialing to ON, it will be even more powerful. The last is the gain switching. The L-block is suitable for headphones with smaller impedance, and the H-block high-gain is more suitable for large-impedance headphones.

top

Switch indicator

There are two 3.5mm ports on the top, a knob, knob to control the volume, but also take into account the switch function, excellent rotation damping, can play for one year. The left interface can output audio in A mode and B mode. In C mode, it is an Audio in interface. The right headphone port is the output interface in each mode.

This article uses the Sony XBA-Z5 for all the sense of hearing contrasts. Personally, the style is entirely based on personal feelings. After all, this thing has a love for vegetables and radishes, but I will point out the obvious difference in sound quality. If there is any objection, please point out it in the comments. Thank you.

Attach the headset connection below

Actual experience

A mode (audio decoding for iphone)

Since there is no extra photo equipment, all of the photos in this article (except for the head photo quoted from the official website) are from the iphone, so I do not provide a picture of the iphone bundled use, but can clearly tell you that its length and width almost iphone6/6s They are exactly the same, just like a brick, they look very harmonious.

The connection only needs to be connected like a mobile power device to insert the device and switch the mode switch to A. Unscrew the knob and wait for two seconds to connect successfully. The multitasking interface will prompt the audio output device.

Iphone audio output connection prompt

The software for listening to the song is a player with its own player. The song is in the WAV format Hotel California (Live) and Tsai Chin's ferry (after which all the songs were tested using the two songs). Song files here: Links Password: jqxk

The guitar sound of Hotel California's long prelude is clearly clearer than direct play, applause and music are clearly more natural, and the sound field feels a little bigger. Closed eyes can feel the approximate sound direction, compared to the straight line. Clearly.

As for Tsai Chin’s ferry, there is no break (it will push one or two places to break the sound), it will not stick to the original sound, and there will be no feeling of oppression. It's better than pushing straight.

In general, with the ios device can bring a good gain for audio playback, in the value of Dafa PHA-1A and tangled with the quality of friends, do not feel entangled, because the two devices are roughly at the same level, Dafa’s previous feelings in the physical store were more suitable for popular songs. The OPPO HA-2 was more balanced in terms of tri-band frequency. All kinds of songs tasted altogether. There were occasional surprises in the plain.

B mode (connecting to a computer)

One thing to note is that the linking computer needs to be downloaded from the official website before it can be used, and the original data cable will have a constant, slight current to the computer, so I used an Amazon Basics data cable to connect to the computer.

Listening is because of the windows laptop, the original sound quality is too bad, after connecting the feeling of sound quality is not a little bit of improvement, all kinds of strange strange noise disappeared, with FOOBAR 2000 listening to music is really a pleasure

Listening to the "California Guest House" has never been so refreshing. I feel the position of each guitar. The drums on both sides can hear clearly. I can even feel the right and left bearings. The sand hammer is not mixed with other sounds. The applause of the audience is not sticky. Together, there is a certain sense of space.

"River" feels explosive and explosive throughout the entire process. The vocal feeling will be interrupted by the drums. After the amp is connected, the sound of the drums is very crisp, and the vocals are separated very well. Sometimes the sound of ventilation can be heard. The sound also feels more distant than the line.

In general, when connected to a general PC, audio output quality can be effectively improved.

C mode (direct audio cable connection)

Connect A27 via 3.5mm cable

Whether linking the iphone or the A27, it just feels a bit better than pushing the high frequency, and the other is almost indistinguishable from the in-line, so there is no need to buy when you don't have a headphone or not to use it for ios/PC/Android. This device, if you want to use Walkman, is still recommended to purchase Dafa's own amp. By the way, there is a wave of A27, and it is really slow to pour songs into your own suite. 1000 songs took more than an hour, although the network identification function of the home suite can sometimes add song information to unknown songs, but sometimes it changed the information song into an unknown singer, for me this obsessive-compulsive disorder patient It is really unbearable to use MP3 Tag to add a morning song message, so it is really convenient to buy a SONY player or buy an Android player's smart player.

to sum up

Disadvantages:

Sometimes it gets hot

Does not support digital connection with Walkman

There is no such thing as a protective bag, but it is always afraid of being picked up.

advantage:

Looks good

Life is good, but also can be used as charging treasure

Tri-band equalization, thrust is also good

In general, this headphone amplifier is suitable for use by value-friends using ios devices. There are no obvious disadvantages in sound. It is still relatively awesome to listen to vocals. Whether it is with my Z5 or 300AP, it will not produce bad sounds. The individual is not very tangled in bass, so for my listeners who like to listen to vocals, I feel that this is a device that can return to the fare.

Corrugated Wire Spool

The product is manufactured in accordance with GB4004-83, JB/T7600.3-94 and DlN46395 standards. Its common carbon steel Q235 thin steel plate punched into corrugated type serves as the lateral plate; And its mandrel and major body are supported by four-groove reinforcing steel bars. The product has the characteristics of not only strengthening the strength of bobbin, but also having light weight of bobbin, which can be used for buncher, stranding machine, extruder, cabling machine and armouring machine.

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