Stereo Summing Box ToolMix32 - Connector Pinning
25pol. Sub-D - Stereo-Input 13 to 16
Links: Stereo Summing Box ToolMix32 analog Summing Gear Home

ToolMix32 Connector Pinning:
Stereo-Input 1-4 Stereo-Input 5-8 Stereo-Input 9-12 Stereo Input 13-16
Couple Port XLR Power Supply