"Spirit SX is a flexible 4-bus mixer capable of producing Digital sound quality for both live and recording applications. It includes 20 inputs as standard and 18 outputs (including Auxs and Direct Outs). In addition to mix outs, two sub-buses allow groups of instruments to be sent to multitrack, to additional speakers, or sub-grouped to mix. There are also four stereo inputs for keyboards or other stereo instruments. SX's 8 Direct Outs are fader pre/post switchable so they are equally useful for recording in the studio or at a gig." - Soundcraft Herstellerseite