I'm thinking of ways to ensure my band sounds great at every gig. I found a digital mixer called Behringer XR18, which is capable of setting up, saving, and restoring stage presets at a click of a button. My assumption is that if we hired a proper sound engineer to set us up once and save it as a preset (or a number of presets in case we need more), we would be able to go to gigs and sound great, giving the sound guys a stereo out only, and ask them to handle the drums.
I know that different stages require different sound. As far as I know, stage sound engineers traditionally handle this mostly with the channel eq controls of their mixers as well as lowering the volume on the bass if the room is bass-heavy, or making the vocals / sologuitar louder if the room diminishes highs. This is a very simplistic generalisation of course, and I may be wrong in these assumptions. I would be happy to learn where I'm mistaken.
I would think that if I gave them a stereo out, EQing that stereo signal would achieve a similar EQ envelope that sounds good in that room without messing up the balance between the instruments / vocals.
This would also fasten the setup process, as this particular hardware has 6 buses, so we would be able to pre-mix our monitors as well. In this scenario, we would take our own guitar amps, and they would go directly to the sound card without a mic set up.
Do you think this is a reasonable assumption, or are there nuances that I haven't taken into account?