LG This year brings us a new flagship G5 It can be said that it is a product with a large "brain hole" because it has a modular design, and one of them is called Hi-Fi Plus It can greatly improve the sound quality of G5. This time, we will experience this product.

The package of LG Hi Fi Plus is small and compact. It is designed as a white paper box. There are some product descriptions on it. The model is AFD-1200 , LG and B&O An accessory jointly launched to support the international version of G5, which is not applicable to Korean, American and Puerto Rican versions.

There are some internal instructions on the back of the package. It can be seen that the fuselage is made in South Korea.

The inside of the package is very simple. The audio module and protective cover, microUSB Type-C Adapter cable, portable leather case and instructions.

The leather case has a good texture, and the logo of B&O is printed on it. However, if the audio module and the protective cover are put into the leather case together, it will be very tight, and the size control is not good enough.

There are cloth strips on the back of the leather case to facilitate the introduction of modules, and the details are carefully designed.

The Hi Fi Plus module and protective cover are made of plastic, with a skin like coating on the surface, a metal B&O brand logo on the front, and the "chin" of G5 is printed with LG.

The logo on the back tells us that this product is made by LG Electronics.

Open the protective cover, you can see that the working standard of the module is 5V 220mA 。

By comparing the original chin of the G5, we can see that the volume of the Hi Fi Plus is much larger.

The G5 equipped with the Hi Fi Plus even drew with the iPhone 6s Plus in terms of body length.

By comparing the interface below, the Hi Fi Plus has an additional 3.5mm headphone interface, and the others, such as speakers, USB interfaces, and microphones, are all identical. However, we found a problem when using the Hi Fi Plus. If you play music outside, the whole module will have obvious resonance, which makes you feel bad. In addition, when using the Hi Fi Plus, there will be 3.5mm headphone connectors on the top and bottom of the phone. We can choose one of them to listen to music. The two cannot be used at the same time.

The usage method is the same as that of other modules. The battery is fixed on the module, then inserted into the mobile phone, and fixed through the plastic snap.

The "combination" of Hi Fi Plus and G5 will not make any difference in normal use. When we plug the headset into the Hi Fi Plus, the Hi Fi mode will automatically start.

Check the seam between the metal body and the module, and there is obviously a "sense of fragmentation". The fit is not very good, but it feels slightly better than the original module.

When listening to music with Hi Fi Plus, you will find that the module itself fever Obviously, this is similar to the performance of many Hi Fi Walkmans, and consume power It will also be faster.

According to LG's settings, the Hi Fi Plus can also be used for other devices. The original adapter cable can be used normally. We connect the S7 edge with the Hi Fi Plus and can decode it with the Hi Fi Plus. However, the interesting thing is that we need to plug the headset into the Hi Fi Plus before triggering its "switch", and then the phone will normally detect the USB audio device. At this time, we can use the Hi Fi Plus just like the general decoding ear amplifier all-in-one machine. In addition, connecting other mobile phones requires a specific player (such as the seashell music player) for normal use.

After inserting the headset, the Hi Fi Plus will display "Preparing Hi Fi genie" (left figure). After the headset is inserted, the USB Type-C interface on the Hi Fi Plus cannot transmit data normally and can only be charged.

After the Hi Fi Plus is connected, the system setting of G5 will add the option of 32-bit high fidelity DAC, which can adjust the volume and balance the left and right channels, and will automatically detect the impedance of the currently inserted headset V10 It's exactly the same. I believe all users who have used it will feel more friendly. The difference is that V10 is built in ES9018K2M Chip, and G5 needs to change the module.

LG's Hi Fi Plus uses the latest mobile top DAC from ESS Technology—— ES9028C2M , and X6Plus and Xplay5 of vivo ES9028Q2M It is the same series of chips, and its parameters are very similar, Signal to noise ratio up to 129dB , total harmonic distortion plus noise -120dB , such parameters can be regarded as a "parameter stream" even if they are put into the high-end walkman. In addition, Hi Fi Plus also uses the ES9602C Operational amplifier.

From the perspective of sound performance, the sound quality of the Hi Fi Plus is absolutely the top level in mobile phones. It is the best in mobile phones in terms of sound field, resolution, and low-frequency elasticity. Compared with other HiFi phones, it also shows its own advantages. From the perspective of sound trend, Hi Fi Plus belongs to the type with fewer voice dyes, and takes the route of high resolution and quality. Some users may think that this style is peaceful, but it will make it have better front-end adaptability. This orientation also reminds us of previous generations of iPhones. Of course, its sound quality is not comparable to that of iPhones. As far as sound is concerned, B&O's tuning does not seem to highlight the two points that ordinary users like: the ear hugging voice and the low frequency of "moving times and playing times". It is more about creating a sound balance, which may be the pursuit of "high fidelity".

From the initial use experience, the Hi Fi Plus of G5 is undoubtedly a module with high playability. It can effectively improve the listening experience of mobile phones. It can be used as a USB DAC for other devices alone, which also makes it more playable. Later, we will continue to share more device playing methods and experiences with families. Please look forward to it.