Haylou X1 Pro hybrid ANC true wireless earbuds teardown

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Haylou is an independent brand of Liesheng Technology including “wireless audio, smart wear, IOT” and other categories. Its true wireless bluetooth earbuds is designed with the concept of “innovation and high cost performance”, and it has a good sales volume on foreign e-commerce platforms.

52audio got a new earphone from Haylou——Haylou X1 Pro. The appearance of the headphone charging case adopts a space capsule design, supports Bluetooth 5.2, -35dB Hybrid ANC, and 3-mic smart noise cancelling. A low-latency mode is designed for gamers to meet user needs. In terms of battery life, earbuds can reach 40 hours of battery life with the charging case. Next, let’s teardown this earphone and see what’s special in the earphone after teardown.

The Haylou TWS earbuds dismantled by 52audio include: Haylou MoriPods, Haylou GT5, Haylou GT1, Haylou T16 true wireless noise cancelling earbuds.


|1. Haylou X1 Pro unboxing

The outer packaging of Haylou X1 Pro is a rectangular box design. There is the HAYLOU brand logo in the upper left corner of the front of the box, and the product name “X1 Pro” with colorful design in the upper right corner. In the middle of the box is a rendering of the earbuds and information on the “multi-mode noise cancelling” function.

The upper part of the back of the product outer packaging is the display picture of the product’s characters, and the lower part is printed with the functional characteristics of the product.

Label information on the side of the box.

The basic parameters of the earphones: the communication distance is 10 meters, the charging time is about 2 hours, the playback time is about 5 hours, and the input parameter is 5V⎓100mA.

Basic parameters of charging case: input parameter 5V⎓500mA, output parameter 5V⎓150mA, charging time is about 3 hours, battery capacity is 400mAh.

Open the box and take out the contents of the box.

The eartips that come with the product. The eartips feature a fish-mouth-like design that provides a better seal.

USB A to Type-C charging cable.

The appearance of the Haylou X1 Pro charging case. The charging case is made of matte black material, and the design is inspired by the space capsule. It is small and exquisite, and girls can hold it with one hand. The opening and closing method of the charging case is a flip design, which supports one-handed operation. There is also an LED indicator on the front of the bottom shell of the charging box to indicate the working status of the charging case.

LED indicator on the charging case.

A hinge for opening and closing the charging case can be seen on the back of the charging case.

The Type-C charging interface for charging the charging case is designed at the bottom of the charging case.

There is a function button on the side of the charging case. A short press can pair the earbuds, and a long press can reset the earbuds connection.

Open the charging case, the charging case places the state of the earphones.

Information on the inside of the upper cover of the charging case. Input 5V⎓500mA, output 5V⎓150mA, rated capacity 400mAh/1.48Wh, manufacturer: Dongguan Hunting Electronic Technology Co., Ltd.

Remove the earphones from the charging case.

The charging contacts in the earphone charging cockpit.

The Haylou X1 Pro earbuds have a handle-shaped semi-in-ear design, and the “HAYLOU” brand logo is printed on the back of the earphone handle.

Inside appearance of earphone.

The L/R logo is printed on the inside of the headphone head to facilitate users to distinguish the left and right ears.

There is a rear feedback microphone pickup hole near the sound mouth of the earphone to collect ambient sound for noise cancelling of calls.

The main sound outlet of the microphone is equipped with a dust cover to prevent foreign objects from entering the earphone cavity.

The feed-forward microphone pickup hole at the bottom of the earphone handle is used to collect ambient sound and cooperate with the feed-back microphone for noise cancelling.

There is an LED indicator at the bottom of the earphone handle to indicate the working status of the earphone.

The charging contacts for charging the earphone are located on the inside of the earphone stem.

There is a microphone opening at the bottom of the earphone, which provides a pickup function for voice calls.

After actual measurement, the overall weight of Haylou X1 Pro and charging case is 46.1g.

The weight of a single earphone is about 4.5g.

The Haylou X1 Pro true wireless earbuds are tested for wired charging using a portable power tester. The charging voltage is about 5.02V, the charging current is about 0.24A, and the charging power is about 1.20W.


|2. Haylou X1 Pro charging case teardown

After reading the cool appearance of Haylou X1 Pro, let’s take a look at the teardown of the product.

First separate the earphone cockpit from the charging case bottom case.

The battery is fixed on the motherboard on the back of the earphone cockpit.

The bottom of the earphone cockpit is equipped with a Type-C charging interface female socket.

The micro-buttons on the motherboard are set on the side of the earphone cockpit.

The charging case motherboard is screwed to the back of the earphone cockpit.

Unscrew the screws to remove the charging case mainboard. There are two charging boards under the charging case mainboard which are installed on the earphone cockpit.

Remove the two charging boards, and completely separate the charging case mainboard from the earphone cockpit.

The internal structure of the earphone cockpit is equipped with 2 magnets for adsorbing the earphone. Another large magnet is used to attract the top cover of the charging case.

Remove the battery from the mainboard of the charging case, there is a double-sided tape on the back of the mainboard to fix the battery.

Charging case battery information, battery model 512726, rated capacity 1.48Wh/400mAh, rated voltage 3.7V.

The back of the charging case motherboard is close, and under the battery is a thermistor that detects the battery temperature.

Thermistor to ensure that the battery is charged and discharged within the normal temperature range.

The front of the charging case motherboard.

The pogo pin connector for charging earphones is designed on a separate charging pad.

The Type-C charging interface on the mainboard of the charging case.

The jog buttons on the motherboard of the charging case.

The LPS LP6261 ultra-low static current synchronous boost converter is used to boost the built-in battery in the charging case to charge earphones.

LP6261 has a TRUE shutdown function, which can disconnect input and output under shutdown and output short-circuit conditions. The 1.2MHZ switching frequency can use small-sized inductors and capacitors. The switch pin adopts a high-voltage 9V process, which can effectively absorb the production capacity of the earphone when plugging and unplugging. High voltage spikes. At the same time, the LP6260 has no whistling sound within the full load capacity range (especially at light load).

The LP6261 consumes only 1UA of quiescent current under light load conditions, achieves up to 75% efficiency under 20uA load, and up to 93% conversion efficiency from 3.3V to 5V under 200mA load.

According to 52audio, a large number of audio products from Xiaomi, OPPO, Huawei, Lenovo, Motorola, realme, Edifier, QCY, JLab, Skullcandy, Boltune and other brands have adopted the LPS power management solution.

Details of the LPS LP6261 Ultra-Low Quiescent Current Synchronous Boost Converter.

XySemi XB5335A1C battery protection IC.

Silkscreen 10WA linear charging chip for charging the built-in lithium battery in the charging case.

The 2 LED indicators of the charging case are set on the FPC cable.

The hall element of “AR1F1” silkscreened on the FPC cable is used to sense the opening and closing of the charging case to realize the function of the earphone open the box and pair devices automatically.

ZIF connector for connecting FPC cable, model OK-F501-06325.

Screen-printed “T12 003” TVS protection tube for input overvoltage protection.

An unmarked MCU is used to control the whole charging case.


|3. Haylou X1 Pro earphones teardown

After reading the teardown of the charging case, let’s take a look at the teardown of earphones.

First let’s remove the earphone front cavity along the parting line.

There is a lot of glue in the front cavity of the earphone to fix the speaker unit, magnet and noise cancelling microphone.

The earphone’s battery is installed in the back cavity of the earphone.

Take out the circuit in the front cavity of the earphone.

The internal structure of the front cavity of the earphone.

The front of the speaker unit is provided with a metal protective shell.

The back of the speaker unit is connected to the earphone circuit by wire soldering.

Laser engraved “MD24 X212” MEMS microphone for dual microphone ENC call noise cancelling function.

The positive and negative electrodes of the earphone battery are connected to the earphone circuit through wires, and the position is fixed with high temperature-resistant insulating tape.

Take out the earphone battery, battery information, rated voltage 3.7V, rated capacity 45mAh/0.167Wh.

The FPC cable that integrates the internal circuit of the earphone head is connected to the earphone motherboard through the opening of the front cavity of the earphone, and the opening of the front cavity has a sponge for cushioning.

The place where the FPC cable and earphone mainboard are connected is coated with a lot of white glue to fix and seal.

Pry open the back of the headphone stem.

The back of the earphone handle is provided with a bluetooth antenna and a touch detection patch.

Take out the earphone motherboard.

The internal structure of the earphone handle, the bottom is the opening of the charging contact and the magnet for attracting the charging case.

A lot of glue is used to fix the headphone head FPC cable to the motherboard.

After removing the FPC cable of the headphone head, the front of the mainboard of the headphone handle.

The back of the headphone handle motherboard.

The MEMS microphone with laser engraving “iC161 2118” on the top of earphone’s motherboard is used to work with the back-feed microphone to provide dual-mic noise cancelling function for earphone.

ZIF connector for connecting earphone battery, speaker and back-feed microphone, model OK-128GF006/2-35.

WUQI WQ7033AR bluetooth audio SoC, WQ7033 series supports Bluetooth 5.2 dual-mode, supports the new generation of bluetooth audio technology standard LE Audio. Integrated high-performance dual RISC-V CPU, HiFi 5 DSP and NPU, ultra-low power consumption design provides earphones with 10 hours of long-lasting battery life.

In other functions, WQ7033AR supports FF+FB mixed ANC function and transparent mode. Support multi-Mic mixed noise cancelling, AI NN network smart call noise cancelling, can achieve high-definition call experience in complex environments. Support VAD voice wake-up. It also has rich interfaces, integrated charging management system, etc.

WUQI WQ7033A system and software architecture.

Two Scientific SDHC1608F4R7M magnetically shielded precision wire wound inductors, one of the SDHC1608 series. Low DCR, improve efficiency and prolong standby time, the top is high-density magnetic powder, which has higher permeability than traditional precision wound inductors. Both sides are also magnetic shielding structures to optimize spatial interference to surrounding devices.

The entire SDHC series has a very high cost performance, better magnetic shielding effect, and DCR is superior to traditional precision wire wound inductors.

According to 52audio, Scientific has responded to the three models and dozens of high-quality inductive products launched in the TWS earphone market. At present, OnePlus Buds Z2 true wireless earbuds, QCY T17 true wireless earbuds, LOOP-T6 smart earphones and other TWS earbuds have adopted Scientific Fully Magnetically Shielded Precision Wirewound Inductors.

Scientic SDHC1608 series fully magnetic shielded precision wirewound inductor details.

The metal features for charging earphones, and the bottom is provided with a sealing ring, which is waterproof and dustproof.

The crystal oscillator that provides the clock for the bluetooth chip.

Pogo Pin connector for connecting the bluetooth antenna and touch detection patch.

Silkscreen “EA 4AJ” battery protection IC.

There are 2 LED lights on the mainboard of the earphone to indicate the working status of the earphones.

The microphone at the bottom of the motherboard, laser engraved “MD21”, is used to provide pickup function for voice calls.

After actual measurement, the size of Haylou X1 Pro earphones speaker is about 7.98mm.

All components of Haylou X1 Pro true wireless earphones.


|4. Summary

In terms of appearance, the earbuds of Haylou X1 Pro use a classic handle-type in-ear design, and the back of the earphone handle is designed to resemble a piano key, bringing the rhythm of music to the user. The charging case adopts a design similar to a space capsule, which brings an interesting experience to users.

In terms of internal configuration of the charging case, the built-in battery capacity is 1.48Wh/400mAh, which provides an additional 34 hours of battery life for earphones. In terms of power management, LPS LP6261 ultra-low static current synchronous boost converter is used to boost the built-in battery in the charging case to charge earphones.

In terms of internal configuration, earphone uses 3 microphones to provide a clear experience of super noise cancelling for earphone’s call function. The earphones use two Scientic SDHC1608F4R7M fully magnetically shielded precision wire wound inductors to optimize the spatial interference to surrounding devices. The bluetooth audio SoC adopts WUQI WQ7033AR, which supports Bluetooth 5.2 dual-mode and the new generation of bluetooth audio technology standard LE Audio. Integrated high-performance dual RISC-V CPU, HiFi 5 DSP and NPU, ultra-low power consumption design provides earphones with 10 hours of long-lasting battery life.

Source: 52audio


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