The modern smartphone has long ceased to be just a means of communication, turning into a powerful multimedia center that can replace a portable player. Redmi Note 8 Pro from Xiaomi was one of the first mid-range devices to receive support for high-resolution sound through a 3.5 mm connector. This makes it an ideal choice for music lovers who appreciate quality, but are not ready to overpay for flagship models.
The right audio output setup unlocks the potential of any headphone, whether it's a wired headset or a modern Bluetooth device. MIUI has a lot of hidden features that users often ignore by default, and we'll figure out how to turn your smartphone into a real Hi-Fi tool.
In this article, we will take a closer look at all aspects of audio playback, from basic interface settings to fine-tuning frequency performance through an engineering menu, and learn which codecs your device supports and how to avoid typical bugs that degrade the sound.
Hardware features of the Redmi Note 8 Pro audio system
The Redmi Note 8 Pro’s sound quality is based on Realtek’s dedicated digital-to-analog DAC converter. Unlike many competitors who integrate audio directly into the processor, Xiaomi engineers decided to use a separate chip to reduce noise and provide a cleaner output signal.
The device supports Hi-Res Audio technology, which is confirmed by the corresponding logo on the box. This means the ability to decode files with a sampling rate of up to 192 kHz and a bit of 24 bits. For wired connection, a standard 3.5 mm jack is used, which stores the analog signal without unnecessary compression.
⚠️ Note: Use of cheap adapters USB-C 3.5 mm can completely disable the external DAC Realtek, switching the audio processing to the built-in, less quality module of the processor.
The wireless connection is also not deprived of attention. The smartphone supports advanced data transfer codecs such as aptX and aptX HD. The presence of these codecs is critical for transmitting high-resolution audio over Bluetooth, minimizing quality loss when compressing a signal before sending to headphones.
Basic configuration of sound and interface
The first thing to start with is the standard settings of the system. → Sound and vibration: Here, the user can adjust the volume of media files, alarms and bells independently of each other".
This section activates the system equalizer and virtual surround sound. By default, MIUI algorithms can be disabled or configured to a standard profile. It is recommended to manually select the type of headphones so that the system applies the correct frequency adjustment.
Don't ignore the Sound Improvement feature, which dynamically adjusts the equalizer to the genre of music, but for critical listening, it's best to turn it off to avoid unnatural timbre coloring. Pure signal is often more important than artificial bass.
Working with wired headphones and DAC
Connecting a wired headset to the Redmi Note 8 Pro activates a high-quality playback path. The system automatically recognizes the connection and can suggest choosing the type of device connected. This is an important step, since the impedance and sensitivity of different models require a personalized approach.
If you use high-resistance headphones, the built-in amplification may not be enough, so it makes sense to consider buying an external portable amplifier that connects via USB-C. However, for most consumer models, the power of the Realtek built-in DAC is more than enough.
For maximum quality, make sure that the developer settings (which we will discuss below) have the right bitrate.Standard settings often limit output to save battery power, which is unacceptable for audiophiles.
Setting up Bluetooth and transfer codecs
Wireless audio is a trade-off between convenience and quality, but the Redmi Note 8 Pro allows you to minimize this trade-off.The key here is choosing a codec. By default, the smartphone can use an SBC codec that has a low bitrate and noticeable high frequency losses.
To activate aptX HD or LDAC (if supported by firmware), you need to go to the developer menu, where in the Bluetooth Audio Codec section, you can force the best version compatible with your headphones to choose, which will significantly improve the detail and width of the scene.
| Codec | Bitrate (kbit/s) | Quality. | Delay. |
|---|---|---|---|
| SBC | 328 | Basic | Tall. |
| aptX | 352 | Good. | Medium |
| aptX HD | 576 | High. | Medium |
| LDAC | 990 | Hi-Res | Low. |
Keep in mind that using high-resolution codecs increases the power consumption of Bluetooth modules, and if you listen to music while you're on the go and the battery is critical, you can switch to aptX or even SBC temporarily to save resources.
⚠️ Note: When switching to high-resolution codecs (HD) In the developer menu, the sound may be interrupted if the headphones are far from the phone or in the area of poor Wi-Fi reception.
Secret settings and developer menu
For advanced users, Xiaomi hides the additional controls on the audio system, and to access them, you need to activate the developer mode, and this is done by tapping the build number seven times in the About Phone section.
When activated, a new option will appear in the settings menu, "Additional" or "Advanced Settings", where the "Developers" section is located. We're interested in the Bluetooth block, and you can find options like "Disable Absolute Volume", which allows you to adjust the volume independently on your phone and headphones.
You can also find Bluetooth buffer settings in this section, which can help stabilize the flow of data when listening to online streams, but adds a small latency, which is important to consider when watching videos or games.
Third-party applications and file formats
Xiaomi’s regular player is functional, but there are more powerful alternatives for audio connoisseurs, with apps like Poweramp, Neutron Music Player or USB Audio Player PRO allowing you to bypass Android’s system limitations and work directly with the audio tract.
These players support native decoding of FLAC, DSD and WAV formats without conversion, which guarantees bit-perfect playback. They also have their own, more flexible equalizers and the ability to configure output via OpenSL ES or AAudio.
When using a third-party player, the MIUI system effects are often turned off automatically to avoid double signal processing, which is the right scenario, since dual application of the effects can lead to distortion and "cough" in the sound.
- 🎵 Poweramp: The Best Choice for Deep Sound Customization and Plugin Support.
- 🎵 Neutron: Perfect for purists, requires complex customization, but gives a reference result.
- 🎵 AIMP: Excellent balance between functionality, support for themes and ease of use.
Frequent problems and their solution
Even a high-quality device like the Redmi Note 8 Pro can experience software failures, the most common problem being the quiet sound or no sound after a system update, often solved by simply restarting the audio service or resetting the audio settings.
Sometimes users encounter cracking or interruptions during playback, which can be caused not only by software errors, but also by physical contamination of the 3.5 mm connector. Careful cleaning of the connector with compressed air or soft brush often solves the problem.
If the sound is wheezing at maximum volume, check to see if the "Bass Amplification" mode is on in the settings. Excessive low-frequency software processing on cheap speakers or headphones often leads to clipping.