We play small to medium pubs. Generally we put vocals, guitar and kick through all the time. In medium pubs I go through too but in small pubs I'll just go through the sub to reinforce the bottom end as my stsge volume projects enough out front. Vocals and guitar in the monitor, which is a single powered unit with extension speaker. Sound check by walking out front whilst playing and agree the mix with the singer who has a wireless mic. Mixing desk has built in effects, 3 band eq with mid sweep per channel, enough channels/ inputs. Powered tops and 1 powered sub.