Av network receiver loudspeaker configuration 51 output power per channel 80 watt total output power 5 x 80 watt output impedance 4 ohm speaker terminals banana connector screw clamp hdmi specification hdmi 20 playback formats wav flac aiff alac mp3 wma aac dsd analogue inputs 2 optical inputs 1 number of coaxial inputs 1 number of hdmi inputs 4 number of hdmi outputs 1 preamp output subwoofer x1 front connections headphone jack microphone us