Denon AVRS500BT-R Recertified 5.2 Channel AV Refurbished Receiver with 4K Capability and Bluetooth (Black) Built-in Bluetooth for wireless music streaming. In case of any queries kindly contact Customer Service Team @ 201-762-6665 5.2 channel; 140 watts per channel maximum power;5 HDMI Inputs/1 Out Ultra HD 4K 60 Hz video pass-through; 4:4:4 Pure Color pass-through Kindly refer the below manual to trouble-shoot issues with this product New setup assistant with enhanced GUI