With a compact design, SC-PT580 is compatible with Front Layout Mode which allows 5.1ch surround sound with 5 speakers placed in the front. Even with space limitation, 5.1ch surround sound can be enjoyed with selectable speaker layout. SC-PT580 is also compatible with a new feature of ARC (Audio Return Channel). ARC allows receiving audio signals from the TV, on top of the pre-existing HDMI function of sending audio/video signals to the TV with just one cable. This new feature will simplify the connection by eliminating an audio cable connection between TV audio output and main unit’s audio input. * ARC compatible TV is required. Easy Setup is a very convenient function that allows anyone to easily set up the home cinema system with any type of TV by simply following the on-screen instructions.