This is the information I found on this item in google: Denon AVR-S540BT AV Surround Receiver It is a 5.2-channel receiver with 70 watts per channel. It supports 4K Ultra HD video with HDCP 2.2 on all HDMI inputs. The receiver features built-in Bluetooth for wireless music streaming. It is compatible with the Denon 500 Series Remote app for control from a mobile device. It includes 5 HDMI inputs and 1 HDMI output with ARC support.