SoundPeats is an innovative Internet smart technology brand integrating smart technology and acoustic culture, focusing on creating bluetooth headphones suitable for light sports scenes. We have teardown the true wireless earphones of SoundPeats before, including: SoundPEATS Air3 Deluxe HS, SoundPeats TrueAir2 and so on. This time, we will teardown another tws earbuds that support active noise cancellation and have obtained Hi-Res certification—SoundPEATS Mini Pro HS.
SoundPEATS Mini Pro HS adopts a lightweight bean-shaped in-ear design in appearance, which is ergonomic and provides a better comfortable wearing experience. In terms of configuration, it is equipped with a 10mm bio-diaphragm speaker, supports LDAC codec, and provides lossless sound quality close to HiFi level. Support active noise cancellation, can provide 40dB noise cancellation effect. It supports three microphones for call noise cancellation, and with anti-wind noise design, the call is clear and transparent.
SoundPEATS Mini Pro HS also supports game mode, which can provide 70ms low latency, bringing a game experience with sound and picture synchronization. Equipped with APP, which can customize touch operation control, EQ sound effects, etc. In terms of battery life, the earbuds have a single battery life of 8 hours and a comprehensive battery life of 28 hours. Let’s take a look at the internal structure configuration information of this product.
01/ SoundPEATS Mini Pro HS charging case teardown
Pry open the charging case and take out the cockpit interface.
The bottom structure of the charging cockpit, the battery is covered with a sponge pad for protection, and a thermistor is pasted to detect the temperature.
The side structure of the charging cockpit, the main board is fixed in the middle.
Remove the battery, charge the bottom structure of the cockpit, and fix the main board with screws.
The charging case built-in lithium battery model: CEL 701435, capacity: 300mAh/1.11Wh, voltage: 3.7V, production date: October 11, 2022, from CEL Kinsale.
The battery protection board circuit is equipped with DW01 lithium battery protection IC and MOS tube.
Circuits on the motherboard side.
Circuits on the other side of the motherboard.
Pogo Pin connector for charging earbuds.
LPS LP7801TE ultra-low power charging boost single chip, designed for charging/discharging small-capacity lithium batteries. Integrates a linear charge management module, a low-power synchronous boost discharge management module, and a built-in power MOS. The charging current is externally programmable, the maximum charging current is 1A, and the standby current of the entire charging compartment is <10uA (including earbuds and protection board) when 5V is normally on.
LPS LP7801TE is packaged in ESOP-8, and the switch pin adopts high-voltage 9V technology, which can effectively absorb the high-voltage peak of production capacity when plugging and unplugging the earphones. At the same time, there is no howling sound within the full load capacity range (especially at light load). The built-in OVP and NTC are precisely adjustable, the input withstand voltage is 28V, the input overvoltage protection components are omitted, and the standby current is 1uA. The efficiency of the boost module is as high as 95%, the switch pin has high withstand voltage, fixed 5.1V output, few peripherals, and small ripple.
According to 52audio, there are currently Black Shark, SoundPeats, Xiaomi, Honor, OPPO, Huawei, Redmi, realme, Lenovo, Sony, Nokia, Motorola, Edifier, Soundcore, 1MORE, QCY, Razer and many other audio brands. The product adopts LPS power management chip.
The 2R2 integrated power inductor is used for charging and discharging the battery with the power management chip.
An unmarked MCU microcontroller for charging case control.
The thermistor used to detect the battery temperature, the wire is soldered to the main board.
Three LED indicators of different colors are used to feedback the charging status.
02/ SoundPEATS Mini Pro HS earbuds teardown
Enter the earbuds teardown section and open the sound cavity along the parting line.
The internal structure of the sound cavity, the speaker is glued and fixed, and the edge cable is connected to the microphone unit.
The rear cavity is isolated by the cover plate, and the wiring holes are glued and sealed. There are tuning holes to ensure the air circulation inside the cavity.
Take out the speaker, the lower microphone structure, and fix it with hot melt adhesive.
Take out all components inside the sound chamber.
The internal structure of the earbud front cavity is also equipped with magnets for adsorption with the charging case.
The wiring circuit inside the front cavity of the earbud.
Two metal copper pillars for earbud charging, with rubber pads on the bottom for sealing.
The front diaphragm of the dynamic driver installed inside the earbud is covered with a layer of bio-diaphragm.
On the back of the dynamic driver, a tuning hole is designed in the center to improve the acoustic performance.
After actual measurement, the size of the dynamic driver is about 10mm.
The MEMS microphone of Laser Engraving R240 A51D is a feed-back noise cancellation microphone, which is used to pick up noise from inside the ear canal, and it comes from RAYKING.
Remove the back cover of the earbud, and the battery and motherboard unit inside the cavity are fixed on the bracket.
A bluetooth antenna and a touch detection patch are arranged on the inside of the cover.
Call microphone pickup hole, anti-wind noise design, avoid direct blowing, reduce the impact of wind noise.
The motherboard unit is fixed on one side of the bracket, and the cable inside the front cavity of the earbud is connected to the motherboard through the BTB connector.
The steel shell button battery is fixed on the other side of the bracket.
The main components inside the earbud are teardown.
Remove the motherboard and battery unit from the bracket. Disconnect the battery cable and remove the battery insulating plastic.
The earbud is equipped with a steel shell button battery, model: ICB1240, voltage: 3.7V, from EVE.
On the other side of the battery, there is a QR code engraved and a battery capacity of 45mAh 0.167Wh.
The circuit on the side of the earbud motherboard.
The circuit on the other side of the earbud motherboard.
The female socket of the BTB connector used to connect the cable.
Pogo Pin connector for charging earbuds.
The earbud is equipped with WUQI WQ7033AR bluetooth audio SoC, integrated Hybrid (FF+FB) hybrid ANC, and the maximum noise cancellation depth reaches 40dB. Support LDAC high-definition audio codec technology and multi-MIC AI ENC noise cancellation to achieve high-quality listening experience in complex environments. At the same time, it adopts the leading HIFI5 DSP+RISC-V chip architecture design, and has the industry’s first-class power consumption performance. The ultra-low power consumption design provides the earphones with a single 8-hour battery life, allowing you to enjoy the Hi-Res high-definition music experience.
WUQI WQ7033A series is a bluetooth audio SoC for the mid-to-high-end market, supporting BT/BLE 5.2 dual-mode protocol stack and a new generation of bluetooth audio technology standard LE Audio. Built-in high-performance HiFi 5 DSP and NPU (Neural Network Processing Unit) to support complex multi-microphone uplink noise cancellation algorithm and keyword wake-up, while taking into account low power consumption. Integrated Hybrid (FF+FB) ANC, can support earphones applications with high bandwidth and deep noise cancellation. Provides rich interfaces and high integration, suitable for advanced TWS noise cancellation earphones and other low-power products that require complex audio processing and voice AI capabilities.
According to 52audio, there are many well-known brand earphones such as Soundcore, JBL, MONSTER, Haylou, QCY, SoundPEATS, Noise and so on, which have adopted the bluetooth chip from WUQI.
The crystal oscillator that provides the clock for the bluetooth chip.
WINSEMI WSDF23A2N2H fully integrated lithium battery protection IC. Built-in advanced power MOSFET, high-precision voltage detection circuit and delay circuit, with overcharge, overdischarge, overcurrent, short circuit and other protection functions required by all batteries. And the power consumption is very low when working, and it also has a CTL shipping mode setting function.
The WSDF23A2N2H is available in a very small DFN4L-1X1 package, which makes the device ideal for rechargeable battery pack applications where space constraints are very small.
According to 52audio, TWS earbuds of Honor, FIIL, QCY, UGREEN, Skullcandy, Edifier, BULL and other brands have adopted WINSEMI lithium battery protection chip.
The feed-forward noise cancellation microphone of Laser Engraving R240 A51D is used to pick up external environmental noise. It is the same model as the feed-back noise cancellation microphone.
The MEMS microphone of Laser Engraving R230 A51D, which is used to pick up human voice in voice calls, is also from RAYKING.
Two LED indicators of different colors are used to feedback the working status of the earbud.
All components of SoundPEATS Mini Pro HS true wireless noise cancellation earbuds.
In terms of appearance, the charging case of SoundPEATS Mini Pro HS adopts an oval design, and the body is treated with a gold-sprinkling process, which effectively improves the texture of the product. The bean-shaped in-ear earbuds are small and light in size, and the ergonomic design of repeated adjustments, Provide a better comfortable wearing experience. The brand gold LOGO design on the back of the earbud further strengthens the product’s recognition.
In terms of internal structure configuration, the charging case has a built-in CEL 300mAh battery and is equipped with an independent circuit protection board. On the motherboard, the Type-C interface is used to input power, equipped with LPS LP7801TE power management chip, integrated linear charging management module, low-power synchronous boost discharge management module. The charging current is externally programmable, the maximum charging current is 1A, and the standby current of the entire charging compartment is <10uA when 5V is normally on. There is also an unmarked single-chip microcomputer, which is used for the overall control of the charging case.
The earbud is equipped with a 10mm bio-diaphragm dynamic driver and three MEMS microphones with built-in feedforward + feedback + calls. The main control chip is WUQi WQ7033AR bluetooth audio SoC, designed with ultra-low power consumption. Support BT/BLE5.2 dual-mode, integrated hybrid active noise cancellation, dual microphone AI call noise cancellation. Built-in EVE 45mAh steel shell button battery, equipped with WINSEMI WSDF23A2N2H fully integrated lithium battery protection IC, responsible for overcharge, overdischarge, overcurrent, short circuit and other protection.