Let's dive into the differences between a Pre-Fader MixBUS and a Post Fader MixBUS. We are using the X32 console as an example, but the concepts translate to all consoles. You can use this information for AUX sends, MixBUS sends, Matrix sends and routing within your DAW (Digital Audio Workstation) to move signals back and forth from your console / DAW and back again. The possibilities are (almost) endless.