Little Genius is a smart product brand launched by BBK Education Electronics in 2011, focusing on creating trendy high-quality children's smart products, including children's phone watch series, children's headset series, etc. The E5 earbuds are its latest open-back earbuds, with a recognizable and technological design inspired by the "Radiant" diamond-cut process, and an adjustable clip design for the earbuds to fit a variety of ear shapes to ensure a comfortable and stable fit.
In terms of functional configuration, it is equipped with DRC intelligent tuning technology, which can greatly enhance the low-frequency performance of the earphone, equipped with patented technology of sound field gain direction, to ensure the concentrated transmission of sound and reduce sound leakage, to support ENC call noise reduction function, which can intelligently enhance the human voice and improve the clarity of the call, to support the intelligent interconnection function, which can be quickly paired with the little genius and backgammon products with one click, and also supports one-key sound generation for auxiliary earphone lost recovery. In terms of battery life, it supports a single 4-hour battery life and a combined battery life of 27 hours. Let's take a look at the detailed teardown report of this product~
1. Little genius earphones E5 unboxing
The E5 Earbuds packaging box is very designed, with a color block diagram similar to Radiant's diamond-cut charging case on the front, the "Little Genius" brand logo and the "OpenBuds E5" product name.
Product information is available on the back of the box. Features: Adjustable ear clip design, comfortable wearing, 27h long battery life, extraordinary sound quality, Product Name: Little Genius Earphone E5, Earphone Model: E2301AC, Earphone Battery Capacity: 38mAh, Charging Case Model: E2301ACB, Charging Case Battery Capacity: 800mAh, Charging Case Charging Input: 5V=0.6A, Bluetooth Version: 5.2, Manufacturer: Guangdong Xiaotiancai Technology Co., Ltd.
The contents of the box include earphones, charging cable, and product manual.
随机标配的充电线，采用了USB-A to Type-C接口。
The design of the E5 charging case is inspired by the "Radiant" diamond cutting process, with a clear and linear appearance, and the shell is made of high-transparency optical material, with the visual effect of mechanical components brought by the laser engraving process inside, which is very technological.
The front appearance of the charging case is at a glance, and the internal cavity is engraved with precision "components", which is very cool.
There is an indicator light in the middle for feedback on Bluetooth pairing and charging status.
充电盒背面外观一览，内部腔体上设计有“VOCAL DESIGN BY XTC”字样。
There is a Bluetooth pairing button on the top of the charging case.
A Type-C charging port is set at the bottom of the charging case.
The cockpit of the charging case adopts a unique open design, the earbuds are placed on the left and right sides, and can be ejected by pressing, and it is equipped with a mechanical sound and feel of pressing. According to the official introduction, the press bounce has passed the test 100,000 times, and users can use it with confidence.
Take out the headphones, and the overall appearance of the little genius headphones E5 is at a glance.
Close-up of the cockpit structure of the earbuds on the side of the charging case, with metal ejector pins inside for charging the earbuds.
The appearance of the E5 earphones adopts an innovative adjustable ear clip design, and the tail is equipped with a hovering hinge structure, which can be adapted to a variety of ear shapes to ensure a comfortable and stable fit.
The back of the earbuds has a diamond-cut design similar to the charging case, decorated with camouflage patterns, and equipped with a microphone pickup hole.
The inside of the earbuds has a matte texture, rounded and smooth curves, and non-chrome ears are worn.
Close-up of the metal contacts connected to the charging case for charging.
Close-up of the hovering hinge structure, which can be personalized according to the size of the ear, has a strong sense of damping, and the wearing is stable.
The appearance of the side of the earphone is at a glance, and the Hinge structure is engraved with L/R left and right logos for easy user identification.
The other side of the earphone has a glance at the appearance, equipped with speaker outlets and tuning holes, which are protected by a metal grille.
Measured by I love audio network, the weight of the little genius earphone E5 is about 58.5g.
Each earbud weighs about 4.8g, which is significantly lighter than the previous generation, making it light and comfortable to wear.
I LOVE AUDIO NETWORK USES CHARGERLAB POWER-Z KM003C TO CHARGE THE LITTLE GENIUS EARPHONE E5, THE INPUT POWER IS ABOUT 2.66W.
Second, the little genius earphone E5 disassembly
Through unboxing, we learned in detail about the unique design of the little genius earphoneE5, and now enter the disassembly part to see the internal structure configuration information~
Disassemble the charging case
Remove the transparent case of the charging case.
Remove the outer cover of the cavity and set up the internal components around the perimeter of the cavity.
An overview of the inner structure of the front cover, with a black lens hood in the middle indicator opening.
A view of the inner structure of the back cover.
An overview of the inner structure of the top cover.
A list of the inner structure of the bottom cover.
A list of the structure of the motherboard and the power input board on the front of the cavity, which are fixed by screws.
The battery cell is fixed on the back of the cavity.
The function button at the top of the cavity has a small plate structure at a glance, and the positioning groove is fixed.
The power input board at the bottom of the cavity is connected to the motherboard through the cable.
Remove the screws and remove all components around the chamber.
The front structure of the cavity is at a glance, and the slide rail and buckle structure of the headset cockpit are arranged in the middle.
A list of the structure of the battery fixing groove on the back of the cavity.
Charging case built-in rechargeable lithium-ion battery pack, model: 942035PN4, rated capacity: 800mAh, rated energy: 3.08Wh, charging limit voltage: 4.40V, nominal voltage: 3.85V, manufacturer: Chongqing Zijian Electronics Co., Ltd., made in China.
Tear off the external insulation protection, and the screen printing information on the battery cell is at a glance.
A list of circuits on one side of the battery protection board.
The other side of the battery protection plate is connected with the positive and negative nickel sheets of the battery.
The silk-screen 48N 425 lithium battery protection IC is responsible for the protection of overcharge, overdischarge, and overcurrent of the battery.
A list of circuits on one side of the motherboard of the charging case.
A list of circuits on the other side of the motherboard of the charging case.
Two LED indicators of different colors are used to feedback Bluetooth pairing and charging status.
Siyuan Semiconductor SY5320 over-voltage and over-current protection IC is a highly integrated protection IC with input under-voltage and over-voltage protection, lithium battery front-end over-voltage protection, load current abnormal protection and over-temperature protection, supporting 28V input withstand voltage, over-voltage shutdown protection less than 1uS, supporting high-precision battery over-voltage protection function, using DFN-2x2-8L package.
据我爱音频网拆解了解到，思远半导体的电源管理类芯片目前已被一加、小米、OPPO、Redmi、iQOO、漫步者、联想、传音、倍思、科大讯飞、用维、公牛、小天才、Cleer、Fiio、JadeAudio翡声、MEES、YOBYBO、HAYLOU、DENON天龙、Oladance、Nothing、XTOUR、final、酷睿视、Skullcandy、vivo、QCY、猛玛、声阔、绿联、Nothing、realme、魅族、百度、网易、JBL、哈曼、联想、万魔、233621、传音、魔宴、创新科技等国内外知名品牌采用。
Siyuan Semiconductor SY5320 details.
SinhMicro昇生微电子SS881A POWER MCU,是一颗集成了充放电管理的AD型Flash单片机。
Close-up of metal shrapnel connected to the charging cable of the earbuds.
LPS Microsource Semiconductor LP6261 ultra-low quiescent current synchronous boost converter is used to boost the battery inside the charging case to charge the earbuds.
LP6261 has TRUE OFF function, which can disconnect input and output under the condition of off and output short circuit, 1.2MHZ switching frequency can use small volume of inductance and capacitor, the switch pin adopts high-voltage 9V process, which can effectively absorb the high-voltage spike of the production capacity when the earphone is plugged and unplugged, and LP6261 has no whine sound in the full load capacity range (especially when light load).
The LP6261 consumes only 1UA of quiescent current at light loads, achieves up to 75% efficiency at 20uA load, and up to 93% conversion efficiency from 3.3V to 5V at 200mA.
LPS微源半导体LP6261详细资料图。 据我爱音频网拆解了解到,目前已有QQ音乐、TOZO、KEF、ikko、小米、荣耀、Redmi、realme、MEIZU、红魔、雷蛇、小天才、FIIL、1MORE、JBL、Bowers & Wilkins、酷睿视、Barbetsound、JLab、SUUNTO、Monster、七彩虹、Nothing、斯莫格、PHILIPS、RODE、重力星球、Hay lou、如布、ELEVOC、HHOGene、黑鲨、SoundPeats、花再、OPPO、华为、联想、索尼、诺基亚、摩托罗拉、漫步者、声阔、万魔、QCY、绿联、雷蛇等众多品牌旗下音频产品采用了微源的方案。
A boost inductor that works with a boost IC to boost the built-in battery to charge the earphones.
The other is a metal shrapnel connected to the charging cable of the earbuds.
Close-up of the function button small board, soldered with the wire.
A list of circuits on the side of the power input board.
A list of circuits on the other side of the power input board.
Type-C充电母座特写。
The internal structure of the earphone cockpit is at a glance, with a magnet on the left side, a spring structure on the right side, and a buckle fixed to the charging case below.
Remove the spring structure and take out the cable that charges the earphones.
Close-up of the spring structure, which is mounted on a metal plate to increase service life.
A glance at the cable circuit of the charging case for charging the earbuds, and the copper at the end of the cable is exposed to connect to the motherboard.
Close-up of the Pogo Pin connector connected to the headphones.
Headset disassembly
Disassemble the earphone part and remove the back cover.
A list of the inner structure of the cover.
The internal structure of the cavity is at a glance, and the motherboard is fixed by snapping.
Remove the motherboard and battery cell inside the cavity.
A glance at the structure of the speaker unit at the bottom of the cavity.
Close-up of the plastic parts of the sound cavity cover.
A list of circuits on the side of the headset motherboard.
A glance at the circuit on the other side of the headphone motherboard.
BES恒玄BES2500系列蓝牙音频SoC,不同后缀配置和功能不相同。 恒玄BES2500IUC/UI/IZ系列,支持蓝牙5.2,超低底噪,512K SRAM,2M/4M FLASH,为高性价比方案。
According to the dismantling of I love audio network, at present, Huawei, OPPO, Xiaomi, Samsung, vivo, Honor, JBL, Wanmo, Baidu, OnePlus, Transsion and many other brands of true wireless earbuds are widely used.
Close-up of the 26.000MHz crystal oscillator that provides the clock for the Bluetooth chip.
Close-up of ceramic bluetooth antenna.
IC of silkscreen 202.
Silkscreen H9A IC.
iCM Chuangxin Micro CM1126B-GAC 2-in-1 single-cell battery protection IC with shipping mode has a built-in high-precision voltage detection circuit and delay circuit, which realizes the protection of overcharge, over-discharge and over-current of the battery by detecting the voltage and current of the battery, and is suitable for the protection circuit of single-cell lithium-ion/lithium polymer rechargeable battery, and also has a shipping mode, so that the small-capacity battery pack can meet the needs of sea transportation and long-term storage.
据我爱音频网拆解了解到,创芯微锂电保护IC目前已获得荣耀、OPPO、vivo、realme、IQOO、科大讯飞、漫步者、一加OnePlus、百度小度、Soundcore声阔、AUKEY傲基、Skullcandy �realme、中兴、Jabra、QCY、魔声、bilibili、华为、联想、名创优品、Haylou嘿喽、小天才、usmile、HYUNDAI现代等品牌旗下的产品采用。
iCM Chuangxin Micro CM1126B-GAC detailed data map.
A metal shrapnel that connects the charging contact cables.
The MEMS microphone of Leidiang MF40 D153 is used for voice call function pickup, which comes from Minxin Microelectronics.
耳机内置钢壳扣式电池负极特写，型号：CP1045AA，标称电压：3.7V。
Close-up of the positive electrode of a steel-shelled button battery.
Remove the speaker inside the cavity.
The structure at the bottom of the cavity is at a glance, and a magnet is also fixed in the sound cavity, which is adsorbed and fixed with the charging case.
Close-up of the cable connecting the motherboard to the charging contacts.
Close-up of the front of the speaker, with a wool paper fiber composite diaphragm.
Close-up of the back of the speaker, surrounded by circular tuning holes to enhance acoustic performance.
Speaker vs. one-dollar coin size.
According to the actual measurement of I love audio network, the size of the speaker is about 10mm.
Little genius headphones E5 disassemble family portrait.
3. I love the audio network summary
In terms of the appearance of the Little Genius EarphoneE5, it has been comprehensively updated on the basis of the continuation of the previous generation of Little Genius E3 open cockpit and ear clip-on headphone design. The charging case features a transparent casing with a layered "Radiant diamond-cut design" and is engraved with "precision components" to enhance product details. The new innovative hovering hinge structure of the ear clip-on headphones can better adapt to different user ear shapes and provide a comfortable and stable wearing experience.
In terms of internal circuits, the charging case has a built-in 800mAh lithium battery, which adopts a Type-C interface input power, and the Siyuan Semiconductor SY5320 chip is responsible for overvoltage and overcurrent protection, and the LPS Microsource Semiconductor LP6261 boost converter boosts the built-in battery to charge the earphones.
The inside of the earbuds is equipped with a 10mm wool paper fiber composite diaphragm dynamic unit, using a 38mAh steel case buckle battery, and the motherboard is equipped with a BES Hengxuan BES2500IU Bluetooth audio SoC, iCM Chuangxin Micro CM1126B-GAC two-in-one single-cell battery protection IC with shipping mode, and a MEMS microphone for Minxin Microelectronics.