Av network receiver series onkyo tx nr loudspeaker configuration 72 output power per channel 135 watt total output power 950 watt output impedance 6 ohm speaker terminals screw clamp analogue inputs 3 optical inputs 2 number of coaxial inputs 1 number of hdmi inputs 4 number of hdmi outputs 1 composite video inputs 2 preamp outputs subwoofer x2 20 pre out front connections headphone jack microphone portable input aux in other connections ethern