This provides two inputs, one dedicated as a line level DAW return (D-connector), the other (XLR connector), is intended as a mic input but may be used for both mic or line inputs. Normally the Mic Input feeds the variable gain INPUT amplifier, and the DAW return feeds a unity gain line amp. However a centrally controlled INPUT FLIP function reverses the input routing so that the DAW return can be processed by the variable gain amplifier stage without the necessity for external patching.