Digital audio mixing device

A mixer (1) includes a plurality of input channels (100), a plurality of input groups (110), and a plurality of group strips (120) that adjust values of parameters of the input groups (110). The mixer (1) preliminarily prepares a plurality of group presets having data required for setup of group modules as presets, and each group preset has attribute information including musical genre, number of input channels, and instrument kind. By selecting a musical genre, a user can change the group presets which are being applied at present to the plurality of input groups (110) to other group presets corresponding to another musical genre while keeping the number of input channels (100) and the instrument kinds which are being used at present between before and after the change of genre.