Harman Kardon
Mi 11 also played the \"Harman Karton\" flag, at half a meter distance, the test M11 external instant maximum sound pressure, 86dB, 9dB smaller than 11U. The M11 external release will also have some slight broken sound, and the middle and low frequency segment will have audible interference, but the performance is much better than the 11U. In fact, most of the current mobile phone external can not withstand rigorous testing, M11 performance is not worse than other mobile phones, but millet copywriting propaganda in the \"high-end sound quality experience\