What type of listen does the Solo button provide when associated with a Mix Master?

The Solo button, when associated with a Mix Master, provides an After-Fader Listen. This means that when the Solo button is engaged, it allows the engineer or operator to hear the audio signal after it has been affected by the fader position. Essentially, this means that any adjustments made to the fader, such as volume levels, will affect the sound that is heard in solo mode.

This functionality is crucial in live sound mixing and studio recording because it allows the engineer to hear exactly how the mix will sound based on current settings. It helps in making informed decisions about adjustments in real-time, enhancing the overall mix quality. Engineers can listen to the level adjustments in context with other elements of the mix, ensuring that the final sound is balanced and polished.

Other options like Pre-Fader Listen and Direct Monitor Listen serve different purposes, focusing on how signals are routed before being adjusted by the fader or through direct inputs. However, After-Fader Listen specifically allows for monitoring the effects of current mixing choices, which is why it is the correct answer in this scenario.