Well I have done many of these racks for L.P. These are racks 11 and 12 for them and they complete backline 3 for the 2 guitar players. Each player has a complete back up of his entire rack. The pedals go in front of the 2 Randall preamps. One preamp is on the right side and one on the left and sounds are blended. To compensate for phase issues between different modules there is a phase reverse loop in the gcx so both preamps can be kept in phase.. Here are pics of the entire backline.