MEIZU Flow was developed jointly by MEIZU senior acoustic R&D department and the Institute of Acoustics at the Chinese Academy of Sciences Institute of Acoustics. MEIZU carried out further triple band optimization on the MEIZU Flow earphones according to the characteristics of the frequency response curve and developed a special upgrade for MEIZU Flow with the addition of the BVS (bass venting system). Adopting a customized conduit to extend the low-frequency response time and utilizing a dynamic driver with improved space, MEIZU Flow produces a bass sound as deep as the ocean.