On October 21st, Xiaomi President Lu Weibing posted a message claiming that the Redmi K90 Pro Max surpasses competitors' flagships in the 10,000 yuan price range in sound quality, aiming to be the best in the industry. He also retweeted a video of a digital blogger reviewing the new K90 Pro Max.
The blogger, considering the Redmi K90 Pro Max's specialized speaker performance, compared it to other leading products across price ranges, such as the iPhone 17 Pro Max.
During the test, the Redmi K90 Pro Max's speakers were set to default. At maximum volume, the sound pressure levels of the Redmi K90 Pro Max and the iPhone 17 Pro Max reached 78.6dBA and 77.3dBA, respectively. The data suggests that the Redmi K90 Pro Max has a slight advantage in terms of sound pressure level.
Furthermore, the blogger noted that the Redmi K90 Pro Max's low-frequency performance is particularly outstanding, with a significant advantage of approximately 10dB in the 100Hz band and a relatively flat sound quality across a wider frequency range.
Notably, during testing, the blogger discovered that the REDMI K90 Pro Max is the first Android phone he's tested to feature full-volume equal loudness compensation. Specifically, at half volume, the 200-300Hz frequency band receives an additional boost. This means the K90 Pro Max delivers fuller, more powerful sound regardless of volume.
After detailed testing, the blogger concluded that, aside from a slight improvement in separation, the REDMI K90 Pro Max achieves top-tier, even supermodel-level, sound quality in all aspects.
The REDMI K90 Pro Max will feature an innovative 2.1 stereo system, comprised of two super-linear speakers and an extra-large independent woofer, utilizing Sound by Bose joint tuning technology.
