Skip to content
Xiaomi Air2 (Xiaomi Mi AirDots Pro 2) TWS Earphone Deap Teardown | Hifigo

Xiaomi Air2 (Xiaomi Mi AirDots Pro 2) TWS Earphone Deap Teardown | Hifigo

Xiaomi Air 2 (Xiaomi Mi AirDots Pro 2)  supports LHDC Bluetooth decoding technology, resulting in higher HD sound quality. It is selling at US$79.99 at Hifigo. As Xiaomi's second-generation true wireless Bluetooth headset, the Xiaomi Air 2 has been upgraded in many ways. So what's the structure inside Xiaomi Air 2 TWS and is it worth to buy? Let's take a look.

 1. Unboxing of Xiaomi Air 2 TWS 

Mi Air 2 TWS earbuds

Mi Air 2 TWS earbuds

Parameters, manufacture, Build-in smart assistant Xiaoai. 

Mi Air 2 TWS earbuds

All in the box.

Mi Air 2 TWS earbuds

Type A - Type C cable close-up 

Mi Air 2 TWS earbuds

Red LED: Charging 

White LED : Full 

Mi Air 2 TWS earbuds

Build-in spindle design for the cover and case connection. 

Mi Air 2 TWS earbuds 7

2 second pressing for paring. 

Mi Air 2 TWS earbuds 8

Mi Air 2 TWS earbuds 9

Mi Air 2 TWS earbuds 10

Mi Air 2 TWS earbuds 11

Mi Air 2 TWS earbuds 13

Microphone for calling at the bottom

Mi Air 2 TWS earbuds 14

Microphone for noise cancelation on top.

Mi Air 2 TWS earbuds 15

Pressure relief hole

Mi Air 2 TWS earbuds 16

Sound hole with metal net cover.

Mi Air 2 TWS earbuds 17

range sensor close-up 

Mi Air 2 TWS earbuds 18

Sound hole with metal net cover.

Mi Air 2 TWS earbuds 19

Charging testing: charging current is 0.431A

Mi Air 2 TWS earbuds 20

50g total 

Mi Air 2 TWS earbuds 21

40.9g for charging case

Mi Air 2 TWS earbuds 22

9.3g for two earbuds 

2. Teardown of Mi Air 2 TWS  charging case 

Mi Air 2 TWS earbuds 23

The case fixed with glue 

Mi Air 2 TWS earbuds 24

The magnets for earbuds fixing and charging case cover fixing.

Mi Air 2 TWS earbuds 25

BN26V Hall chip close up 

Mi Air 2 TWS earbuds 26

Micro button close-up 

Mi Air 2 TWS earbuds 27

Separate the main board and the case. 

Mi Air 2 TWS earbuds 28

 Close-up of the charging case main board.

Mi Air 2 TWS earbuds 29

Battery on the other side. 250mAh,0.93Wh,3.7V/4.2v。

 Mi Air 2 TWS earbuds 31

 LED indicators 

 Mi Air 2 TWS earbuds 33

 Close-up of components side of main board. 

Mi Air 2 TWS earbuds 34

 Back side of main board

Mi Air 2 TWS earbuds 35

Micron button fixed by metal for durability 

Mi Air 2 TWS earbuds 36

S7N IC

Mi Air 2 TWS earbuds 37

cKBHA boost IC  +  2x 4612 ACYO IC 

 

Power supply management  IC. 

overcurrent protection IC WS3210 

HOLTEX  HT50F32002 32bit chip 

Mi Air 2 TWS earbuds 38

3. Teardown of Mi Air 2 TWS earbuds

Mi Air 2 TWS earbuds 39

Microphone for noise cancelation calling.

Mi Air 2 TWS earbuds 40

Speaker connected to the main board with FPC 

Mi Air 2 TWS earbuds 41

The composite diaphragm dynamic unit of earbud

Mi Air 2 TWS earbuds 42

Two layers structure on top of earbud

Mi Air 2 TWS earbuds 43

Close up of the two layers separated.

Mi Air 2 TWS earbuds 44

Dust-proof mask and Infrared light sensor nonopaque mask 

Mi Air 2 TWS earbuds 45

Sensor to detect the earbuds wearing status

Mi Air 2 TWS earbuds 46

Magnet for charging fix

Mi Air 2 TWS earbuds 47

FPC connects the speakers to the main board. 

Mi Air 2 TWS earbuds 48

Socket for the FPC

Mi Air 2 TWS earbuds 49

 Mi Air 2 TWS earbuds

 The microphone for calling at bottom

Mi Air 2 TWS earbuds

 94916 printed and SMT to the PCB. 

Mi Air 2 TWS earbuds

 rubber ring for good leakproofness. 

  Mi Air 2 TWS earbuds 63

z93K49 ANC microphone on top and IC with AD8 printed. 

Mi Air 2 TWS earbuds 64

 Mi Air 2 TWS earbuds 65

 Battery  main board and two microphone total . 

Mi Air 2 TWS earbuds 66

 Front 

Mi Air 2 TWS earbuds 67

Back

Mi Air 2 TWS earbuds 68

Supporting structure with the white plastic part

Mi Air 2 TWS earbuds 69

Mi Air 2 TWS earbuds 71

Battery information 

Mi Air 2 TWS earbuds 72

Rigid-flex PCB board structure 

Mi Air 2 TWS earbuds 73

Back

Mi Air 2 TWS earbuds 74

The big size Bluetooth antenna 

Mi Air 2 TWS earbuds 75

C8F94 IC

Mi Air 2 TWS earbuds 76

The ic of Mi AirDots Pro 2 with QR code is an accelerometer for the double touching response. 

Mi Air 2 TWS earbuds 81

MHE12C IC and 2015CTCCCD30 IC 

Mi Air 2 TWS earbuds 82

BES WT230 Bluetooth Chip 

Mi Air 2 TWS earbuds 83

4. Verdict of teardown 

  1. Xiaomi Wireless Earphone Air 2 uses a 14.2 mm composite diaphragm moving coil unit, touted to produce deep bass and high-quality stereo audio. The bass is described as rich and full, and the treble, clear and sharp.
  2. The Xiaomi Wireless Earphone Air 2 box can charge the headset 1hour, the headphones being a total of 14 hours of music playback. The box is like a power bank, the headset and the storage box allow fast charging, the charge for 10 minutes makes it possible to use them for 70 minutes, in an hour we would have the full load with maximum use 4 hours use.
  3. Each earphone weighs only 4.5g, which is lighter than a coin. The smooth, round body comfortably fixes in your ear for extended periods of time. It is compatible with the waterproof IPX4 protection level.
  4. The upgraded Xiaomi Air2 (Xiaomi Mi AirDots Pro 2) further upgrades the user experience, taking it off, connecting the pop-up window, tapping the control, and so on, and its entire experience is very similar to that of AirPods. The price of Xiaomi True Wireless Bluetooth headset Air2 is only $79.99, which is 1/3 of that of AirPods. Once again, Air2 has implemented the brand concept of popularizing high-end products, and in this price range, it is a very worthwhile one to buy. 
Previous article Xduoo Link type-c to 3.5mm DAC Dongle Quick Review | Hifigo
Next article TFZ King Edition IEM Quick Review | Hifigo

Comments

xxxGlobalxxx - December 3, 2019

Thanks, good job!!

Leave a comment

Comments must be approved before appearing

* Required fields