After the first generation noise reduction product AM180, Huawei launched the second generation noise reduction product AM185. As a follow-up product of the previous generation, noise reduction 2 continues the original quality of the first generation AM180, and on this basis, it strengthens the function and experience of noise reduction 2, so that users can better enjoy music, which is what good music should be.

On the basis of the original packaging of the first generation products, the second generation has strengthened the packaging style of the products, and has achieved the ultimate in the spatial collocation of the products.

Open the product package. In addition to the earphone itself, a USB charging plug is also provided as standard, which can connect to the 3.5MM plug of the earphone for charging. In addition, 4 earplugs are provided for users to replace.     

As far as the product itself is concerned, the appearance and cavity of the earphone are made of aviation grade aluminum alloy and matched with the color of light champagne, which gives a very stylish overall feeling. The sound outlet of the front cavity is of honeycomb design, and the moving iron design is added on the basis of the original generation, so that the sound insulation effect of the earphone can reach the best.     
Friends who have used moving iron earphones will know that the sensitivity of moving iron is higher than that of moving coil. The main reason is that the structure of moving iron unit is almost a closed container structure. A little current can drive it. Here, attention should be paid to the relationship between sensitivity and resistance.  
It is precisely because of its high sensitivity that the dynamic iron earphones perform better in transient performance, and are far better than dynamic earphones in dynamic performance, instantaneous detail performance, and sound density.             
The frequency response curve of moving iron earphones is more stable. The frequency response curve of dynamic earphones will show some audible changes at different temperatures, humidities and in the process of use, while the moving iron will show good stability, making the sound quality more stable and reliable and not easy to change. One important reason is that moving iron units are almost all made of metal materials and formed by high-precision molds. The vibration diaphragm of moving coil units is usually combined with the coil through glue, so there are many influencing elements and individual differences. Therefore, compared with the dynamic unit, the electroacoustic performance should be much more stable. In addition, the noise reduction 2 headset is a combination of dynamic coil and moving iron, which will better let users experience the uniqueness of this headset.    

Noise reduction 2 is also different from the first generation product in design. The volume adjustment function is added on the side of the controller, which makes it easier for users to control the volume without using a mobile phone. In addition, a special noise reduction switch is added on the top of the controller to achieve the noise reduction effect by pushing up, and the function of turning off noise reduction is achieved by pulling down the switch, At this point, it is not available in the first generation of products.      

On the microphone, noise reduction 2 continues the style of noise reduction generation 1, and also uses electret, omnidirectional.  

The design of the audio interface should be different from that of the first generation product. The overall shape adopts the "L" design, which can better connect the mobile phone interface without breaking the wire after a long time of use. The socket model still adopts the standard 3.5mm 4pin gold plating design.    

It is worth mentioning that this noise reduction 2 has a charging adapter that can be directly charged at will in the product package. Through the adapter, third-party devices can be used to directly plug and charge the noise reduction 2.     

It's also a blessing for some struggling partners. A headset handbag included in the product package can solve all your troubles.

I don't know if you are interested in this simple report, but the highlights are still to come. The editor will carry out a series of tests on this headset in succession, so that you can really understand its quality and whether it is really worth starting.