In the past one or two years, the audiophile Walkman and mobile phones have developed rapidly, and there are more and more decoding+ear amplifier all-in-one products developed for mobile phones and Walkmans. Today, we bring OPPO's HA-2 and its partner PM-3 to play.

HA-2 and PM-3 both adopt the black paper box packaging design, and the product shape and the "small gold label" of Hi Res Audio are printed on the outside of the packaging.

On the back of the package are some parameters and introductions of the product.

Some product features can be seen on the side of HA-2, such as ultra-thin body, ES9018K2M decoding chip, DSD decoding, VOOC flash charge and 3000mAh large capacity battery.

Unpack the outer package, and OPPO trademark is printed on the inner layer of both products.

Let's first look at HA-2, which is a decoding ear amplifier all-in-one machine and has the function of mobile power supply.

The fuselage is designed in metal and covered with a layer of black leather, which is quite textured.

There are power indicator light, power key, low-frequency switch and high-low gain switch on the side of the fuselage.

Click the power button, and the remaining power will be displayed. At this time, HA-2 will become a mobile power supply.

The back of the fuselage is marked with the duty of the headphone amplifier.

The top is equipped with 3.5mm audio input/output interface (which can be used for decoding/ear amplifier separately) and 3.5mm headphone interface.

The volume knob is also quite distinctive, sitting on the side of the top of the fuselage, with a power indicator light.

There are working mode options at the bottom of the fuselage, full-size USB interface (mobile power, iOS device connection), micro USB interface (charging port, Android device connection).

The second layer of packaging is related accessories.

HA-2 is also rich in accessories. In addition to relevant instructions, there are data cables, VOOC flash charging power adapters, 3.5mm to 3.5mm pair recording cables, microUSB to microUSB cables, Lightning to USB cables, and two straps.

Next is PM-3. The first layer of the package is the instructions.

The accessories of PM-3 are relatively simple, only the headphone cable and 3.5mm to 6.35mm headphone connector.

After installing the adapter, PM-3 can work on some machines.

It comes with a denim storage bag, which is very considerate.

When the headset is placed horizontally, it can be prevented from being in the storage bag.

The appearance of PM-3 can be said to be the same as that of PM-1 and PM-2. The headset has a large area of metal design, which is quite textured.

The riveting process of PM-3 head beam connection is excellent, and the rotation is smooth.

The PM-3 surface is designed with brushed metal and adopts closed structure.

The inner layer of head beam expansion and contraction has independent numbers.

The other side has the product model.

Leather earmuffs, soft to handle.

Typical matching 1: HA-2, iPhone and PM-3.

Typical matching 1: HA-2 matches Android phone and then connects PM-3.

We will introduce more experiences and audio quality sharing of HA-2 and PM-3 in the follow-up evaluation. Please wait.

Related links:

OPPO PM-1 headphone system experience in tablet field