The master output is a software simulation of a simple stereo amplifier. It delivers a stereo audio signal from the Audiotool application to your audio playback system. It also establishes the signal that will be rendered when you publish the corresponding track. It provides controls to monitor, limit and attenuate the signal. Because of the importance of this device, it is added to every new arrangement by default, it cannot be duplicated or deleted and it doesn’t have an icon in the device library. Note: When using the solo function, the clipping lights and VU meters monitor the soloed signal and the “Limit” and “Output level” controls are disabled.