This title comes with the wekbsite so lets run with it. We rarely get a soundcheck, however we always get a line check, this can be done visually by the man on the desk, if the desk has light displays. Then each instrument and vocal can be to some extent visually balanced, the size of the room, the miking and natural volume of loud things like drums, saxophones and amplifiers can be factored in, as well as knowing that trumpets are very loud already and the high pitch of a we