Cleer Audio, Ally Plus True Wireless Hybrid Noise Cancelling Earbuds with 30 Hour Battery
Cleer is an acoustic sound brand from California, USA. It consists of a core team of senior designers and engineers in the audio industry. Its products have repeatedly won various global awards including the Red Dot Design Award and the CES Technology Innovation Award. It has a number of patented technologies.
Today we are going to disassemble the Cleer ALLY PLUS true wireless noise reduction earphones. As a flagship product, it is equipped with Qualcomm QCC5124 bluetooth audio SoC, which can reduce the noise collected by the two microphones in the earphones. The adjustment ensures that users hear accurate and clear music; the earphones has 8 hours of long battery life when active noise reduction is turned on, and supports 5 minutes of charging and 1 hour of fast charging technology, with 30 hours of extra battery life provided by charging case , Can guarantee a day’s intensive use.
Cleer ALLY PLUS can switch between different noise reduction modes according to the user’s different use environments. The earphones supports three operation modes: click, long press and swipe. IPX4 waterproof can be worn under sports, ergonomic design fits the auricle, various details Both reflect the brand’s accurate insight into user needs.
52audio has disassembled Cleer ALLY true wireless bluetooth earphones, Cleer FLOW noise reduction bluetooth headset and Cleer wireless neck-mounted smart speakers HALO, etc., and the product types are relatively rich.
| 1. Cleer ALLY PLUS True Wireless Noise Cancelling Headphones unboxing
The packaging box continues Cleer’s brand style. The central area highlights the rendering of the earphones. The color of the rendering is the color of the product inside. The outer ring of the ALLY PLUS earphones shell is decorated with gold to highlight the positioning of the flagship product; the upper left corner of the front is the Cleer brand logo. The upper right corner is the product’s award information, including CES2019 Innovation Award and 2019 Red Dot Design Award two well-known awards in the industry; the lower left corner is the three features of the product, including the built-in microphone for voice calls, ANC active noise reduction, and battery life. Up to 10 hours (close ANC); in the lower right corner is the product name “ALLY PLUS True Wireless Noise Canceling Headphones”, the printed fonts are also gold, and the details increase the texture of the product.
The back of the box further introduces the five product features, including: ANC active noise reduction function, 10 hours of long battery life, charging case provides an additional 20 hours of battery life, 10mm neodymium magnet drive unit, bluetooth 5.0 stable connection, and the use of human body in the earphones The engineering design ensures the stability of wearing. There are also AAC and Qualcomm aptX audio coding certification marks below, and the contents of the box are displayed by way of illustrations.
The side of the box is still an introduction to the features. All the legends on the side of the box are gold.
The contents of the box, Cleer ALLY PLUS earphones and charging case, replaceable silicone eartips, portable storage bag, charging cable and user guide, etc.
Cleer ALLY PLUS provides four additional pairs of replaceable silicone eartips. The eartips on the earphones are M size, and the color of the eartips is the same as the product color. Choosing the right eartips can not only improve the wearing comfort, but also improve the active noise reduction effect of the earphones and the sound quality heard by the ear.
The cloth bag that holds the earphones feels hard.
The charging cable is USB-A to USB Type-C interface. The USB Type-C interface supports positive and negative blind plugging, which is easy to use and has been popularized on many digital devices.
The appearance of the charging case still uses the transparent window design of the previous generation, and you can see the internal headphones and status indicators. There is a protective film on the glass, which can be removed or kept.
The Cleer ALLY charging case has a slender body, while the Cleer ALLY PLUS charging case is more square, but the transition at the corners will naturally not hurt the hand.
There is a groove at the opening of the front cover for easy opening. The charging case body is painted with a metallic luster, which looks and feels very textured when held in the hand.
The USB Type-C interface is located on the back of the charging case. For products in this price range, it is a little regrettable that wireless charging is not supported.
52audio used the ChargerLAB POWER-Z KM001C portable power tester to perform a wired charging test on the Cleer ALLY PLUS true wireless noise reduction headphones, and the charging power was about 1.4W.
The state of the earphones in the charging case has sufficient space.
In the charging cockpit shell, Cleer ALLY PLUS puts the certification marks on the charging case into the earphone compartment to ensure the aesthetics of the product; there are L/R marks on the left and right earphones, with a status indicator in the middle.
Pogo Pin that transmits power to the earphones battery.
The product information on the inside of the box cover, ALLY PLUS true wireless noise reduction headphones, input: 5.0V/85mA, 5.0V/545mAh, 2.02Wh.
There is an insulating film on the charging contacts of the new earphones to reduce the power loss during storage and need to be torn off before use.
Cleer ALLY PLUS true wireless noise canceling headphones——Navy.
The earphones and charging case weigh 77.9g in total, which is slightly heavier than the previous Cleer ALLY true wireless bluetooth earphones.
The individual weight of the charging case is 64.1g.
The left and right earphones weigh 13.8g in total. Compared with Cleer ALLY, Cleer ALLY PLUS cancels the earwings design and reduces the weight. The charging case is larger and the weight is increased. The overall weight is moderate and more portable.
| 2. Cleer ALLY PLUS charging case teardown
After unpacking the box, I believe everyone has a comprehensive understanding of the appearance of the charging case of Cleer ALLY PLUS. Next, we will enter the disassembly process to take a look at its internal structural design and power management chip.
Pry open the charging cockpit, there are multiple physical buckle connections on the side.
The PCBA where the charging interface is located is fixed on the shell with two screws, and is connected to the motherboard through a wire. The charging case cover and metal shaft are also fixed by screws.
The back of the charging case internal structure.
The charging case is on the front of the internal structure, and the battery is installed vertically to make full use of the space.
Take out the battery and you can see below is the FPC where the Hall element is located.
A close-up of the inside of the charging cockpit shell. There are two magnets in the earphone position to attach and fix the earphones, and one magnet on each side of the body to absorb the lid.
The light guide at the position of the indicator light is covered with black foam to prevent light leakage.
The FPC where the Hall element is located is connected to the motherboard through a connector.
AJOP’s Hall element with silk screen printing. Charging case The magnetic field changes when the cover is opened and closed will be sensed by the Hall element, and the MCU and earphones will be notified to pair or disconnect with the connected device.
Charging case internal circuit.
Charging case The other side of the internal circuit.
A close-up of the USB Type-C power input interface, through-hole welding, to ensure the reliability of the plugging and unplugging of the charging cable.
On the other side of the PCBA, the wire solder joints are full.
Main PCBA side circuit.
The circuit on the other side of the main PCBA has copper vias exposed at the chip for heat dissipation.
Self-recovery fuse and resistance-capacitance absorption circuit at the power input.
ETAsolutions ETA7014 36V withstand voltage high-side overvoltage protection chip, the protection voltage can be programmed by a voltage divider resistor.
According to 52audio, audio products of well-known brands including Edifier, 1MORE, Xiaomi, ZMI, realme, Baidu, Motorola, JVC, Panasonic, JBL, etc. have adopted a large number of ETAsolutions power management chips.
ETAsolutions ETA7014 details.
Silkscreen S1 IC.
Nuvoton N76E003AQ20 main control single-chip microcomputer, used for functions such as lid opening detection and power display.
The switch charging IC of silk screen CG1.
ETAsolutions ETA1061 1μA ultra-low quiescent current, 1A synchronous rectification boost converter, boost the battery output to charge the earphones. ETA1061 fully integrates the upper and lower power tubes, realizing a single-chip synchronous boost. The output of 5.0V can be fixed or the voltage can be adjusted from Vin~5.0V through a larger external resistor.
It has a built-in switching frequency driver of up to 1.4MHz, which makes the external inductance as low as 2.2μH, and the package is more compact. The volume of the conventional flat chip 3mm*3mm can meet the demand. Not only that, the extremely high frequency also omits numerous Cout output capacitors.
Silk screen SJ diode.
The MOS tube of silkscreen 2302 controls the charging of the earphones.
The triode of the silk screen 1AM.
The regulator tube of silk screen I2.
The battery wire solder joints are round and full.
Self-recovery fuse at battery power input.
The soft pack battery comes from VDL, model 602045, with a rated voltage of 3.7V and a rated capacity of 545mAh/2.02Wh. According to 52audio, well-known brands such as Huawei, Xiaomi, Meizu and OPPO have adopted VDL batteries in large numbers.
The battery protection board provides battery over-voltage, over-discharge and over-current protection, and the thermistor detects the battery temperature.
The Pogo Pin for charging the earphone has a bright coating and good quality.
Two LED indicators.
| 3. Cleer ALLY PLUS earphones teardown
Let’s continue to disassemble the earphone part of Cleer ALLY PLUS. The earphone is a bean-shaped in-ear design with a large number of curves, which looks more rounded. The shell of the call microphone is slightly protruding, which is also easy to take and wear. Compared with the previous generation Cleer ALLY, Cleer ALLY PLUS looks more integrated, and the outer ring is decorated with gold. The two are relatively easy to distinguish.
In addition, Cleer ALLY PLUS supports more touch operation methods, including single-click/double-tap/long press, and swipe up and down to adjust the volume, making it more convenient to use it without the phone.
The light guide of the earphones status indicator.
The sound pickup hole of the call microphone has a dust-proof net inside to prevent foreign objects from entering.
The pickup hole of the feedforward microphone has a dust-proof net inside to prevent foreign objects from entering.
Two of the charging contacts on the inside of the earphone are used for charging, and the other two are used for factory testing; the infrared distance sensor on one side is used for in-ear detection function, which realizes that the earphone will automatically pause playing music and resume playing when put on; On the right is a pressure relief hole to keep the internal and external air pressure balanced.
Another pressure relief hole on the inner shell of the earphone.
A fine dust-proof net at the mouthpiece prevents foreign objects from entering.
Disassemble the earphone shell along the parting line of the fuselage.
The outer cover is connected to the main board through the FPC. There is cushioning foam on the FPC. The touch cover can be removed by opening the connector.
A large amount of glue is used to seal the inside of the cover and the edges. The touch-sensitive FPC has a large area and is convenient for touch. There is an L/R logo on it.
The outer ring of the cover is an LDS laser antenna to ensure good RF performance. There is a metal shrapnel connected to it on the main board, which is responsible for bluetooth data transmission.
Capacitive touch sensing FPC.
The internal structure of the left and right earphones is similar.
The internal components of the sound cavity are connected with the main board through FPC and connectors.
The FPC of the call microphone on the other side is directly integrated with the motherboard.
Remove the call microphone.
Take out the motherboard, below is the battery of the earphones. There is an insulating protective film on the battery, and there is a shielding sticker between the motherboard and the battery to reduce interference.
Below the battery is the sound cavity of the earphones.
There is a crescent-shaped PCBA beside the speaker unit, which is fixed on the shell by screws.
The feedforward microphone is fixed with a lot of black glue.
The appearance of the earphone shell.
The other side of the earphone shell.
Dust-proof net for feedforward microphone.
The slot of the call microphone, and the dust-proof net inside the sound pickup hole.
Comparison of the size of the earphones motherboard and button battery with RMB coins.
The feedforward microphone uses an electret microphone to pick up ambient sound for active noise reduction and call noise reduction.
MEMS silicon microphone that picks up human voice during a call.
There is a heat shielding sticker on the battery.
Remove the sticker, the button battery supplier is from VDL, model LIR ZJ1454C 19C, diameter 14mm, thickness 5.4mm, rated voltage 3.7V, rated capacity 85mAh/0.315Wh.
According to 52audio, well-known brands such as Huawei, Xiaomi, Meizu and OPPO have adopted VDL batteries in large numbers.
Information on the other side of the battery, Chongqing VDL Co., Ltd., the upper limit voltage of charging is 4.2V, and the positive electrode is on the side of the battery.
The circuit on the side of the motherboard has a connector base, and below is the solder joints for the battery wires and the feedforward microphone wires.
There is a heat shielding sticker on the other side of the motherboard.
Connect the metal shrapnel of the LDS antenna.
Two LED indicator lights, surrounded by foam to avoid light leakage from the shell.
The voltage regulator IC of silk screen IO.
The regulator IC of silk screen I2.
Screen printing MI4 J2E lithium battery protection IC.
Remove the shielding thermal paste on the motherboard.
The other side of the sticker is fixed on the motherboard with a small piece of double-sided tape.
Cleer ALLY PLUS true wireless noise reduction headphones use Qualcomm QCC5124 bluetooth audio SoC, support bluetooth 5.0, stable connection, support aptX audio coding, integrated active noise reduction function, low power consumption, good sound quality.
Qualcomm QCC5100 series chips adopt digital active noise cancellation (ANC) technology integrated in SoC, quad-core processor architecture, built-in dual-core DSP audio subsystem, support the latest TWS+ technology, that is, dual-channel synchronous transmission technology, wireless delay Low, and more commendable, is that the power consumption of voice calls and music streaming can be reduced by up to 65% compared with before.
According to 52audio, products from brands such as BOSE, SONY, 1MORE, Edifier, and vivo have all adopted Qualcomm solutions.
The external memory of the silk screen U64A is used to store the configuration information of the earphones, etc. Qualcomm solutions are more common.
Cypress PSoC 4000S series MCU for touch detection.
Finally, let’s look at the structure of the sound cavity.
Remove the screws that fix the crescent-shaped PCBA, and the small contact plate has multiple TVS for electrostatic protection.
Four gold-plated Pogo Pins that charge the earphones and transmit data.
Infrared optical sensor for in-ear detection function.
The Hall element of the silk-screened AJ0N, the Hall element is separately added to the earphones, which can more accurately detect the state of the earphones in/out of the charging case.
The speaker unit is fixed with double-sided tape.
The back-feed microphone is near the mouthpiece.
T iron of the speaker unit.
There is a metal cover outside the speaker unit for protection.
The speaker unit size is about 10mm, consistent with the official publicity.
All components of Cleer ALLY PLUS true wireless noise canceling headphones.
The appearance of Cleer ALLY PLUS earphones and charging case continues the characteristic design of Cleer ALLY: The charging case cover is transparent, you can see the earphone and status indicator inside, reduce the body opening, and have a stronger integration; charging case The body is painted with a metallic luster and has a texture; the earphones are still bean-shaped in-ear design, the shell adopts a large number of curves, and the outer ring gold decoration highlights the positioning of the flagship product.
In terms of internal circuits, the charging case inputs power through the Type-C interface. The input terminal has ETAsolutions ETA7014 to provide overvoltage protection. A power management chip is responsible for charging the battery. The battery output is boosted by ETAsolutions ETA1061 to charge the earphones; Nuvoton MCU is used for switching on Cap detection and power display functions. The soft pack battery used in the earphones comes from VDL with a capacity of 545mAh, which saves internal space when placed vertically; protection circuits are designed at the power input and battery power input to ensure user safety.
In the earphone part, Cleer ALLY PLUS adopts a hybrid noise reduction scheme. The sound is picked up by the feed-forward microphone and the feed-back microphone, and the Qualcomm QCC5124 bluetooth audio SoC is used for related operations to drive the speaker unit to emit reverse sound waves to cancel the noise; Qualcomm QCC5124 supports bluetooth 5.0, and the connection is stable , Supports aptX audio encoding, integrated active noise reduction function, has the characteristics of low power consumption, high transmission rate, etc.; there is also a MEMS silicon microphone in the earphones for picking up human voices during calls, combined with noise reduction microphones to form a three-mic call noise reduction solution, To achieve a clear voice call effect.
Cleer ALLY PLUS adopts physical structure sealing + PCBA board-level nano-coating, which can achieve IPX4 waterproof and sweat-proof, and can be worn in sports; the earphones has a large touch area and supports click/long press/swipe operations, which is more convenient to use without the phone. It is realized by a large-area capacitive patch and Cypress PSoC 4000S series touch MCU; a separate Hall element is also added to the earphones, which can more accurately detect the state of the earphones in/out of the charging case; the button battery used in the earphones Also from VDL, with a capacity of 85mAh, with low-power Qualcomm QCC5124 chip, it has 8 hours of long battery life even in noise reduction mode; 10mm neodymium magnet drive unit with intelligent ambient sound mode can achieve consistent performance in different usage environments Consistent high-quality sound.
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