Easily connects home-run wires from multiple IR receivers to the input terminals of a connecting block or from Match Maker room volume controls to the output terminals of a main amp; High-current design of 12A max allows amp rated as high as 500W to be used with the CB18; 1-in/8-out or 8-in/1-out capability; Nine 4-terminal plug-in connectors on 4-conductor bus; Screw terminals handle wire 24-12 gauge wire sizes; Dim: 11.25″H x 1.25″W x 1.25″D;