X-Rack Master Bus ModuleThe vital component that turns X-Rack from a processing solution into a mixer. The Master Bus Module provides a signal path to the two X-Rack stereo buses for all of the other modules and offers the user a compact console master section that is surprisingly sophisticated for its size.Key Features:Controls the X-Rack's two internal stereo bussesTwo pairs of speaker outputs with dedicated controls for level, dim and cutMaster Level control & MeteringMaster Insert & additional 'Insert Sum' featureMonitor Output Level controlMaster section external MIDI controlMonitor Output AFL SoloMonitor Output RoutingDedicated Monitor Dim & Cut switchingHeadphone Output SectionThis unit was fully functional when last used. However, no warranty is expressed or implied - this unit is being sold "as-is". No returns, no refunds, no exceptions.The manual and a full technical description may be found at Solid State Logic's website