If a Channel Aux Send lacks a "Pre/Post" Button, where is this function most likely found?

When a Channel Aux Send lacks a "Pre/Post" button, the function to adjust the send's signal routing is most commonly located at the Aux Master section of the mixer. The Aux Master controls the overall level of the signals being sent through the auxiliary bus and usually has the ability to determine whether the send is pre-fader or post-fader.

In most mixing consoles, the Aux Sends can either send a signal before the channel fader (pre-fader) or after it (post-fader) to accommodate different monitoring or effects needs. The absence of this button on the individual channel strip indicates that the control for this setting is consolidated to the Aux Master, allowing for streamlined adjustments without cluttering the channel layout.

This design helps sound engineers manage multiple channels more efficiently while still retaining control over the overall mix. Therefore, finding the "Pre/Post" function in the Aux Master is consistent with standard practices in show production where clarity in routing options is essential for effective sound reinforcement.