The NR1603 is a compact AV surround receiver with a rich array of connection terminals, an AV amplifier that can contribute to improved sound quality. I am selling it because I am changing equipment. It was stored in an AV rack, so I think the exterior is in good condition. It has front pre-outs, so you can improve the sound quality with an external power amplifier. This was a major reason why I chose this model. It also supports AirPlay, so you can easily listen to music from your iPhone, etc. - Brand: marantz - Model: NR1603 - Connection terminals: HDMI, RCA, Optical digital, Coaxial digital, Speaker terminals - Accessories: Remote control, Manual, Setup CD, Antenna, Cables - Color: Black - Features: AV surround receiver Thank you for looking.