The DISTRO + / MATRIX + contains a DISTRO + with the addition of connections to Pins 2+ & 2- on the first two NL4’s providing a matrix for two Bi-amp outputs from the NL8. The two NL4’s that are wired as a MATRIX have their Pin 1+, 1- connected to Pins 1 and 3 already to provide 4 full range speaker taps off of an NL8 cable. Therefore, the two NL4’s on the output side have their Pin 1+, 1- connected to pin 2 & Pin 4 of the NL8 connectors to complete the four (4) DISTRO outputs. This package not only a combination of a Distro or a Matrix, but it also has a second NL8 providing a pass through or daisy connectivity to continue on with another NL8 cable.