Model 16 owner. Forgive me for what might be a basic, rookie question but I'd like to know if there is a way to record the mix that is being sent to the mains (FOH). We are wanting to scrutinize the blend of our instruments and vocals and want to hear what we are sending out to the listeners to find the areas that need correction. We ask family, friends, and other musicians to listen and advise when they are around. The problem with this is we get video clips from various sources and when reviewing them the mix at times is not balanced. If we can capture what we're sending out we'll know where to put our focus.