ToolMst Master and Monitor Controller Connectors
Analog Summing Gear ToolMix
This picture shows the xlr outputs of the stereo master and the D-Sub connectors for the master insert, aux masters, and the external control room input, and the connector for the stereo inputs 1 to 4 of the internal mixer.
Master and Monitor Controller ToolMst  
Connector Pinning:  Master Inser/Aux  Stereo Inputs 1-4   XLR  
Rear Total View