You can do that with no problems as long as the binding posts will allow you to get a good, tight connection. You may want to experiment with the connection order for the different sets of cables. By that I mean there may be a difference in sound depending on which set of cables is attached closest to the amp on the binding post when you use stacked connectors. The other (and better, IMHO) option is to have the cables joined and reterminated on the amp end. Hope that helps.