What type of output is controlled by the 24 button?

The 24 button primarily controls the MTB, or Multitrack Bus. This function allows for the routing of audio signals to different tracks for multitrack recording or playback. When utilizing MTB, you are essentially managing how the audio signals are sent out of the mixing console and directed into the appropriate channels of a recording device or DAW (Digital Audio Workstation).

MTB functionality is critical for achieving a clean separation of audio tracks, enabling professionals to manipulate each track independently during the mixing process. This capability is essential during complex productions where various audio elements need careful handling and precise adjustments to ensure high-quality outputs.

In contrast, submix, direct out, and live mix pertain to different audio routing strategies that do not specifically focus on the multitrack capabilities that the MTB offers. Each of those alternatives has distinct roles in audio management and mixing workflows, but the 24 button’s specification directly aligns with the functionality of the Multitrack Bus.