Check out your local House of Blues for an example of what should go into a spec sheet. I wish more venues would make this information publicly available. When I'm getting ready to start a tour the gear I bring is dependent on what the venues can supply and are capable of. I need to know this info before I even start advancing the shows. I've found that most medium sized clubs do not have specs online. About half of the larger venues make it available. So thanks to those of you taking the time and effort in compiling this information.