Observing carefully, the mobile phones around us are slowly picking up HIFI, but the phones that can carry HIFI are basically the flagship models. For some mid-range and low-end machines, you can install HIFI. Not easy, no op amp, only tuning, it is impossible to enjoy sound quality. However, live LYER2 fills this "pit". As for filling it, let's look down.
    Very small, traditional black square packaging, the front logo is affixed to the stickers, behind the parameters are.
LYER2 uses Texas Instruments's pcm2704c chip, in fact, most people do not understand, look at the back part of the sound can be, this way is more intuitive! The whole package can not be described with the word delicate, more rough, slightly general.
    Oh yeah, I also got a funny sticker. I saw it and it was fun. It was 9.9 yuan! It was pretty good to use X.
    The process of opening the package is very hard and it is difficult to pick it up. After opening it gave me a "surprise" ah! Is this the 299 packaging? The amp was packed in a sealed bag, plus an instruction manual. There was no sponge to fix it, so it was naked and it was a bit low.
Delicate but lack of highlights
Do you do enough? Obviously there are still some small gaps. Looking at the overall workmanship, there is no problem. The design is very simple and law-abiding. The cutting in various places is relatively neat. There is no big gap in the convergence. However, the convergence is slightly rough. As for how to come, I will not know.
LYER2 lacks the "bright spot" of design. Some people will say: There is a big difference in the design of people. I want to say: The inspiration for design sometimes collides with it. I talked about the LYER2 design this time: When I first got LYER2, I thought this small thing was pretty good, but this feeling quickly became tired (very fast). The work itself is very calm, it should be too calm. Lack of highlights of the outline, after a long time feel is holding a piece of iron! People feel boring, the volume keys are also very boring, one is too strong! Hope that the next generation of products can do more details on the outline, more embellishment.
First, scan the QR code to download a dedicated APP, then use a data cable to connect the phone to the sound card. After the connection is complete, there will be a blue indicator light on the sound card. Then open the APP and scan the local song. Incidentally, it is not wearable at the interface, and paint will appear.
This kind of external method I sometimes feel is not very convenient, but taking into account LYER2 light and small, it will not bring much trouble, I believe that the pursuit of quality people must not care about this!
The use of the APP is a bit simple, the logic is not enough, to adapt the user to the job, there are still many models can not be compatible, compatible models sometimes flashback phenomenon! You must restart your app frequently to enter.
After the APP logs in to the account, it can associate the devices of the cloud platform. This will also facilitate the import of songs, and the output of the DoP can be set, the output of the sampling rate can be selected, and the tuning can be adjusted by oneself. However, the average person is less tuned. The tone is too heavy.
Headphones: HF300s
    Now let's talk about how much LYER2 can bring the phone's sound quality to the end. How about this pit?
First of all, we choose Charm Blue 3 and Sony Z3 as the front end to listen! Inside the mobile phone is a genuine lossless song I downloaded to the forum, first of all to ensure that the sound quality output is right, I will from low to high to tell everyone how to improve the sound quality.
    Low frequency, I personally feel that it is the most added place, the increase in the amount of low-frequency, enough enough, relatively speaking, without using LYER2, become more condensed, can improve the degree of low-frequency loose.
    IF is also worth talking about, vocal performance is good, become more full, more compact, modified more delicate, analytical also has a good performance, heard something more.
    As for the high frequencies, there is not too much modification. When they are high, they are a little bit floating and extending. It is not very good.
    LYER2 sound card on the phone's sound quality improvement is indeed very obvious, basically one ear can be heard, in fact, the main enhancement is reflected in the low frequency, the sound field has also grown, but not much, high frequency is not much Added.
Now it is a preliminary stage for living, although it is already a second-generation sound card, but it still gives people a feeling of novice, official propaganda language is not like the old driver, there is compatibility, design is also, APP More need to be optimized.
As for the sound quality, LYER2 can really bring about a better sound experience, but what I said above is a comparison with the former without a sound card. If you really want to do a real HIFI, you must have a long way to go.
Is this sound card worth buying? If you are just getting started with this headset, there is only a more than 200 starter plug, but you have no money to enter the front end. The mobile phone does not have the HIFI chip partners. You can enter one, which is cheaper than buying an introductory front end. A lot of it! Can enjoy a little better sound quality, so this pit fills with carelessness, okay, although not to the extreme, but it has achieved initial value.
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