[About Me]]
I am not talented, I am not professional in earphone design, and occasionally I am a Netease musician (Netease cloud music singer can search Black. j's most handsome one). As for the earphone, the fever will be reduced after burning all the way, and the price will fall all the pits from low to high. Not to mention the thorough research on earphones, the ears baptized by money rhinoceros can still recognize something.

[About Brand]]
Brain 66, brand NF HIFI. I believe that friends who are not very familiar with domestic headphones are completely unfamiliar with this brand. It is not produced by a big factory. It was put on the shelves in JD.com crowdfunding, creating 20 minutes and the crowdfunding turnover was 100W. One hour, the crowdfunding turnover was 200W; In 6 hours, the crowdfunding turnover was 400W... the myth, and the founder's brain put the king, brain put the king is a representative of fairness and justice, there are even some opinionated earphone evaluators. He is a well-known UP owner of the barrage website BILIBILI and a big V of WeChat public number. He also has his own earphone evaluation website and forum love machine network. Regarding the development of products and the move to launch Jingdong crowdfunding, Nao Fang Jun said, "There are so many people listening to songs in China, I just want more people to experience HIFI high-end sound quality at the lowest price."
The title is very powerful, then let's look at the products.

[About Products]]
I have to say that the opening of this package really surprised me. Compared with major earphone manufacturers, beats can be said to be full of design and the opening method has been carefully designed, but the flagship noise reduction ummmm of brain 66 can be described as simple, crude and direct. A carton has a built-in plastic box of average quality headphones except headphones and an accessory carton. However, after all, crowdfunding products focus on sound quality and can understand it.

Moving products, the shape of the headset does not have too many surprises, and the exterior of the headset has a magnetic design, which is also the design of most wire-controlled Bluetooth headsets. But in fact, the suction is not very strong because the earphone line is not very long, the magnetic suction does not have much effect under a little movement, and the inner matte metal is more comfortable with the skin-like texture.

The earphones are equipped with two replacement earplugs, one large and one small, and three soft silicone earrings of different shapes. To be honest, there is no discomfort after wearing them for a long time. The wire is very thin. To tell the truth, I thought that with the professional level of brain control, I would make good efforts in the wire. After all, good wire still has a great influence on the sound quality of earphones. Such a thin wire makes me feel like it breaks when I pull it off. The rubber used is not of excellent quality. There is no innovation in appearance, but I can understand that after all, the selling point lies in the sound quality!!

The wire of the earphone connects two modules, one is wire-controlled noise reduction and the other is a power-supplied battery. Let's take a look at the details.

In the main part of the earphone, it can be seen that the filtering of the catheter port is paper, which is better than metal mesh. The wire control consists of-volume key, on/off key and ANC noise reduction key. The volume key and on/off key have moderate resilience and are more comfortable to the touch. The ANC key adopts a sliding design, and the force feedback is obvious when sliding left and right. As for the workmanship of headphones, it is normal, and more exquisite workmanship can be pursued.

The printing on the battery is really not good, the nail is gently scraped off, and the side is the charging port.

The dust bag sent by the accessories can be described in simple terms. The chemical fiber flannel is wrapped in artificial leather, and the sewing thread can be said to be of workshop level. Forget it, it's not a big deal. After all, sound quality is the most important thing!

[About Use]]
The indicator light of the headset is hidden on the volume key. It is displayed in blue when the device is normally connected, and it is red and blue when Bluetooth is paired. When noise reduction is turned on, the indicator light turns white. Long press the wire control circular button to turn on the phone, and the startup connection is almost connected in seconds., The use of wire control is basically the same as that of Bluetooth headsets on the market. The only difference is the volume key, which controls the volume of the headset separately, not synchronously controls the volume of the phone. I think it's quite good, which makes the control of the volume more detailed. What I have to say is that this Bluetooth headset can only be used to listen to music. I don't know whether it is a problem with the noise reduction chip or something. The sound quality of the microphone is very poor when used, regardless of the call effect or recording.

However, the power display function of the Bluetooth device on the mobile phone is useless. It will only display the volume when you first connect and when the 10% is almost dead (basically it can last a few minutes at 10). When the active noise reduction function is turned on, the battery life is about 3 hours, which is enough. Compared with beats and the like, it is still slightly inferior for most of the time. Who made him pay attention to sound quality.

[About Sound Quality]]
Finally, it's the highlight of sound quality!!! Before writing the evaluation, I thought a lot about how to test. A professional evaluation post will definitely put a bunch of equipment to measure the values. What you said is in the fog. In fact, I can't understand whether to buy or not. (The key is that the trouble is useless) Then I will be rude and pull a Shure's test list casually.

First of all, the sound quality is absolutely enough for friends with general needs! First of all, the resolution is that the earphone uses a 13mm moving coil, with a frequency response range of 20Hz ~ 20KHz, an impedance of 32 ohms and a sensitivity of 101dB. The parameters are meaningless, so you don't want to listen to symphony in resolution, it's just muddy. The high frequency is still relatively clear, not muddy, the sound field is quite wide and has a sense of scene. The voice is not good, the sound dye can be done, but these are all based on personal preferences, in fact, it is not important. And what I want to say most is its low frequency, which is really great and can be, really, really can't blow or black. Cai Qin's ferry is an example of the first three drums. If you use this brain 66 to reduce noise, it must be a knock, not a pounce, not a pounce, a deep dive and a flexible voice. Listening to music such as EDM electronics will definitely make you feel blasted! Generally speaking, this earphone is enough for friends who have certain pursuit of sound quality, especially those who like listening to electronic music.

And his active noise reduction function, the overall noise reduction hearing is very natural. It's like you're locked up in a dark and quiet room, where there's almost no sound, and occasionally a few human voices come in from the outside, but they're all weakened a lot, and you can hardly hear them without listening carefully. It can be seen from this that the noise reduction ability of this earphone is still very outstanding. With it, you are not afraid of being disturbed when you take the bus and subway, but you should also be careful not to miss the station.

[Summary]]
1, the appearance is regular, generally no innovation
2. The material is rough and there is a lot of room for improvement.
3. The use function is slightly chicken ribs. The integration of the overall hardware needs to be improved. It is comfortable to wear.
4. The sound quality can kill some similar Bluetooth headsets of about 1,000 yuan in large factories. It is enough for non-burning users and is especially suitable for friends who like dryness.
5. The official price of 499 yuan is matched with such plus or minus points at this price. I think if you look at the individual users, you think it is worth it. For the sound quality can enter, for the appearance or forget it

Finally, attach an easter egg (a picture tells you that you must have not paid much attention to the appearance)