Bogen VMIX Modular Install Mixer and Matrix (Requires Modules)Bogens Power Vector Mixer is an 8 channel mixer pre amplifier, offering a wide variety of operational features and functions for superior audio performance. Eight module bays accept plug in input modules, allowing up to four levels of priority between modules. Two module bays are capable of accepting signal processing plug in output modules. Each module is controlled by an independent volume control with an associated signal clip LED for signal