Mackie PROFX22V2 22-Channel 4-Bus Mixer, Black Size:22 Channel   Mackie ProFXv2 mixers provide a comprehensive live sound solution with a wide range of models, each delivering unmatched sonic performance. Featuring all-new Mackie Vita preamps designed specifically for live sound and the powerful new ReadyFX effects engine, ProFX delivers a no-compromise toolkit including GEQ, USB recording/playback and flexible I/O for any professional application.