Awesome unit with dual combo XLR/instrument front inputs with 48V phantom power and individual gain knobs, as well as separate monitor and headphone volume knobs. Rear has one of each old school midi input and output, as well as 4 balanced TRS line outputs (for potentially 2 sets of studio monitors) and 2 TRS inputs. Included is a 6pin male to 9pin male FireWire cable I used to connect this to my 2011 MacBook, as well as a 12V power cable (I never used the power cable since the FireWire powers the unit). This thing is a beast and was a great fit for me as a beginner level interface, and the old school midi is awesome for older synths.