Sound Quality & Features
- Good sound quality
- Immersive Sound mode
- Hi-Res Audio compatible
As mentioned above, the Redmi Bud 4 Pros are fitted with twin drivers: a 10mm aluminium alloy dynamic main driver, paired with a 6mm titanium dynamic driver that handles the higher frequencies. These prove an impressive combination, as the sound quality they deliver is detailed and well-rounded.
Bass frequencies sound full and present, without ever getting too boomy or woolly. If you want ground-shaking low-end then these aren’t going to deliver that, but then you’re probably not going to be looking at earbuds for that kind of performance anyway.
The mid and treble frequencies are also balanced, without sounding too shrill or tinny. This is no doubt aided by that dedicated 6mm driver which handles those areas. For most styles of music, the Buds 4 Pro cover enough ground to give a very enjoyable experience, no matter what you throw at them.
Foundry
Volume can get pretty loud, so be careful with boosting the signal too much or you could end up with ringing in your ears (Public Service Announcement over).
There’s also Hi-Res Audio capabilities built into the Buds 4 Pro. Xiaomi has added support from Sony’s LDAC codec, which means you can get transmission speeds of up to 990kbps and 96Hz/24-bit audio resolutions. This makes the quality better than Qualcomm’s AptX, but you’ll need a compatible Android device to use this feature.
Another feature is Immersive Sound (basically Spatial Audio), which gives a more three-dimensional depth to movies and TV shows via the buds or on music apps that support the feature. It’s not life-changing but does bring a little sparkle, which is always welcome.
Something to note is that Immersive Sound and Hi-Res Audio can’t be used at the same time, as Xiaomi states that the features are mutually exclusive. But, there is a bonus feature that can cope with more than one thing at once and that’s the multi-device connectivity.
Thanks to the Bluetooth 5.3 capabilities of the Buds 3 Pro, you can be connected to two devices at the same time, switching between them by starting audio on the one you want to hear. This is great for watching a movie on your laptop or Bluetooth enabled smart-TV (with pretty solid latency it must be said), then answering a call on your phone without having to disconnect or remove the buds.
Connections were solid throughout my testing period and the Buds happily paired first-time with any device.
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