Design
Water resistance
The level of water resistance that the device has.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 8g
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Weight
We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 null
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Has no wires or cables
True wireless devices have no cables connecting any part of the device together. This is an important distinction as some wireless earbuds have cables connecting the two earbuds together.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Neckband
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Has RGB lighting
RGB lighting allows you to choose between millions of colors and customize the look of your PC components.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Has stereo speakers
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 null
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Has UV light
The device kills germs, viruses and bacteria using an ultraviolet bulb.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Sound quality
Has active noise cancellation (ANC)
This type of device allows you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise. Ideal for plane rides and morning commutes.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Driver unit size
The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.
- Anker Soundcore Liberty 4 Pro 10.5
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- Yobola T9 null
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Lowest frequency
The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.
- Anker Soundcore Liberty 4 Pro 14
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- Yobola T9 20Hz
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Highest frequency
The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.
- Anker Soundcore Liberty 4 Pro 40000
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- Yobola T9 20000Hz
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Supports spatial audio
Spatial audio is a technology that creates an immersive, three-dimensional sound experience by simulating audio sources from various directions and distances. It enhances the listener's perception of soundscapes, providing a more realistic and engaging experience for music, movies, or games.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Has Dolby Atmos
Dolby Atmos is a surround sound technology that allows sounds to be interpreted as three-dimensional objects. By doing so, Dolby Atmos allows for immersive, 360-degree sound.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 null
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Sound pressure level
Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 null
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Power
Battery life
The device's battery life (when in use) as given by the manufacturer. With a longer battery life you have to charge the device less often.
- Anker Soundcore Liberty 4 Pro 10
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- Yobola T9 5h
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Battery life of charging case
The battery life of the charging case as given by the manufacturer. A charging case with a longer battery life allows you to recharge your headphones on the go multiple times before having to recharge the case itself.
- Anker Soundcore Liberty 4 Pro 40
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- Yobola T9 25h
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Battery life (ANC)
The battery life when using active noise cancellation (ANC), as given by the manufacturer.
- Anker Soundcore Liberty 4 Pro 7.5
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- Yobola T9 null
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Battery power
Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 null
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Has wireless charging
It supports a wireless charging standard such as Qi. To charge the device, you simply put it down on a compatible charging pad.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Has a solar power battery
A solar battery takes its energy from light, and stores it in a self-recharging battery which never needs to be changed.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Connectivity
Has USB Type-C
The USB Type-C features reversible plug orientation and cable direction.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 5.1
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Bluetooth version
Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Newer versions provide faster data transfers.
- Anker Soundcore Liberty 4 Pro 5.3
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- Yobola T9 null
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Has LDAC
LDAC is a codec developed by Sony for Bluetooth audio. It is capable of a very high bitrate of 990kbps, which provides high resolution audio. It can also automatically adjust to a lower bitrate of 330kbps or 660kbps to increase stability.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Has aptX
aptX is a codec used for transmitting audio wirelessly with Bluetooth. It is developed by Qualcomm, and supports 16-bit audio at a bit rate of 384kbps.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 null
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Has aptX Lossless
aptX Lossless is an audio codec for Bluetooth devices that is developed by Qualcomm. It supports high quality 16-bit/44.1kHz audio (at a maximum bit rate of 1200kbps). This codec provides CD-quality audio without any loss of data.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 10m
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Audio latency
Latency refers to the time it takes for the audio signal to be transmitted to your headphones/earbuds. Lower latency reduces audio lag, and is particularly important when playing games or watching videos.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 null
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Maximum Bluetooth range
The device can connect at a greater distance via Bluetooth or infrared to another device.
- Anker Soundcore Liberty 4 Pro 10
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- Yobola T9 null
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Features
Has ambient sound mode
Ambient sound mode uses microphones to pass through ambient noises so that they can still be heard. It’s useful when you want to listen to music but also be aware of what’s happening around you, for example when you’re jogging but still want to be able to hear traffic.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Has in/on-ear detection
Sensors can detect when they are removed from your ears so that the music is paused, saving battery life.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Has find earbuds feature
You can use the app to play a sound from your earbuds to help you locate them.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Multipoint count
Multipoint allows you to link to more Bluetooth devices and switch between them. For example you can easily switch calls from one device to another without having to manually disconnect and reconnect.
- Anker Soundcore Liberty 4 Pro 2
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- Yobola T9 null
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Can read notifications
It can read out any notifications that you receive while you're using the earbuds/headphones.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Control panel placed on a device
There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 null
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Warranty period
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction. Note: This may vary by region.
- Anker Soundcore Liberty 4 Pro null
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- Yobola T9 null
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Travel bag is included
The device comes with its own special case or pouch, which is useful for safe transportation.
- Anker Soundcore Liberty 4 Pro
- Yobola T9
Microphone
Number of microphones
More microphones result in better sound quality and enable the device to filter out background noise.
- Anker Soundcore Liberty 4 Pro 6
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- Yobola T9 null
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Has a noise-canceling microphone
These microphones are designed to filter out background noise from the desired sound. Especially useful in noisy environments.
- Anker Soundcore Liberty 4 Pro
- Yobola T9