Firewire audio interface usb audio interface series rme fireface design external interfaces firewire usb 20 max sample rate 192 khz bitrate 24 bit connections 2x headphone analogue input 8 x audio jack balanced analogue outputs 2 x 635mm stereo headphone outputs 6 x balanced 635mm trs jack digital inputs 2 x adat 1 x aesebu xlr digital outputs 1 x aesebu xlr 2 x adat guitar input jack midi connectors 2 x midi in 2 x midi out phantom power int