Digital live sound console has 48 mic inputs mapped on 16 faders and with four dedicated stereo line channels plus four dedicated FX returns from four internal stereo Lexicon FX processors offers 64 inputs to mix from onboard I/O. 16 additional mic inputs can be exchanged for an 8 mic input + 8 line output module if required whist four 64x64 channel expander slots allow installation of further I/O sources including connection of Soundcraft and Studer stageboxes. Eight balanced insert sends and returns are provided along with same bus structure as Si2+ and Si3+ of 24 group/aux busses, 8 matrix busses and full complement of monitor talkback and main bus outputs. Buses may be freely assigned to any of option slots or 16 bus out XLR connectors which exist in addition to dedicated MIX and monitoring output XLRs. Every bus has dedicated 30-band BSS audio graphic equalizer, permanently patched in with no additional drain on DSP resource. A direct out from every mono channel offers a simple way to record every channel whether requiring this for later mix-down and production work or to use as virtual sound-check at the next gig.