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OPPO PM-3 headsets appearance of high-end luxury

November 20, 2019

It is well known that OPPO is a technology company focusing on smart terminal products, software and Internet services. Founded in 2004 by Chen mingyong, OPPO focuses on mobile phone products.

With the development of The Times, the company has also expanded other products, such as VOOC flash charger, MP3/MP4, Headphones and so on. Today, we will talk about OPPO pm-3 Headphones. (Headband Headphones, Wired headset, Computer HeadphonesStereo HeadphonesStudio HeadphonesMetal EarphonesCreative Earphones)


Although most people still prefer international manufacturers when they buy headphones, there are actually many quality headphones available to choose from. OPPO has a long-term accumulation of audio in the domestic market. The environment is also a good choice. 


OPPO PM-3 Headphones Evaluation Appearance of high-end headphones first look. PM-3's appearance is very good, the cortex + metal is very high-end, the headset's work is good, including the extension cord are all wrapped with metal, the details of the processing is also very delicate. The earmuff part can be rotated 180 degrees, on the one hand convenient storage, on the other hand can also make the headphone better fit the curve of the head, in addition to the headphone hung on the neck, this rotation design can put the earmuffs The part of the neck is attached to the neck so that the clavicle does not feel too uncomfortable. 


Supports multiple usage scenarios, and also provides multiple wiring for these multiple usage scenarios. It can be used to connect mobile phones, PCs, and professional audio output devices. When the headset is connected, you can use the remote control to control the start and pause of music playback. It is still relatively comfortable to wear. The earmuffs are large enough to cover the entire ear. The soft gasket reduces the pressure felt by the Metal Headphones. However, after all, the body's weight is not light, the head part of the long-wear or a sense of oppression. 

OPPO PM-3
OPPO PM series earphones is the abbreviation for Planar Magnetic, which is the flat-diaphragm earphone that the fever ring says. The PM-3 is one of the most familiar among the OPPO flat diaphragm headset product lines. According to official data, PM-3 diaphragms are based on the high-end model PM-1 seven-layer flat diaphragm, double-sided spiral voice coil design and FEM optimized neodymium magnet system, and at the same time, lightweight products. From the data point of view, PM-3 is very good, with an impedance of 26Ω and a sensitivity of 102dB/mW. 


OPPO launched a new amp product HA-2 in the same period to better release the power of flat-panel headphones. The listening part of the PM-3 is basically driven by the HA-2, using the Sony PHA-1A amp as a reference.
The OPPO HA-2 has a slim, external leather finish and is equipped with high-end chips. According to official data, the HA-2 is equipped with Texas Instruments' TPA6120 and ESS9018DACs. It has a built-in 3000mAh lithium battery. It lasts about 13 hours for analog connection and about 7 hours for digital connection. Combined with VOOC flash charging technology, it can charge for 30 minutes. To 70% of electricity, it takes 1 hour and 30 minutes. At the same time, the built-in battery can also be used as a mobile power source to charge other devices. However, when working on the built-in battery, charging other devices will cause the battery life to decrease.
The output power of HA-2 at 16Ohm is 300mW, and the output power of 32Ohm is 220mW. It can support PCM up to 32bit/384kHz, and can also decode DSD by hardware, and supports both DoPv1.1 and native modes. It is possible to support specifications other than 24bit/96khz when using USB transmission. 


OPPOPM-3 and HA-2 can be regarded as the official recommended collocations. Our usage scenarios include iPod Classical, Xperia Z3, iPhone 5S and PC connection HA-2. In general, the use of HA-2 to promote PM-3's sense of hearing is very characteristic. In particular, the iPod Classical, Xperia Z3, and iPhone 5S are all directly connected to listen directly, but the PC needs to download additional drivers on the official website. The selected audio sources are mainly DSD and Hi-Res PCM audio sources. 


The PM-3's midrange and high frequencies are well-balanced. The high frequency is similar to a normal head-worn dynamic earphone. It is soft, but it doesn't sound exactly the same. IF sounds relaxed, and even when using mobile phones and iPods as portable sound sources, there are delicate performances. In conjunction with the HA-2, the bass sounds soft but not chaotic. This is a characteristic of the flat diaphragm headset, but at the same time it is insufficient for diving and the sound is softer. 


It is worth mentioning that HA-2 also has Bass+, which is a mode of strengthening the bass. But after opening it seemed to be a bit too fierce for the PM-3, the feeling of low frequency did not change significantly, it still appeared very soft, and at the same time some out of control. However, when the Sony PHA-1A was used to promote the PM-3, the sense of hearing was slightly different, and there was some improvement in the lack of low-frequency intensity. 


In general, the PM-3 is a unique headset. Beautiful appearance, driving style and sense of hearing are very unique. In terms of price, ordinary enthusiasts are completely free from problems. The official "good friend" with HA-2 amp, exquisite shape, simple operation, is also a very good entry-level amp products.


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