Denon AVR-S900W 7.2-Channel Network AV Receiver with Bluetooth and Wi-Fi (Discontinued by Manufacturer) Built-in Bluetooth and built-in Wi-Fi for wireless music streaming Ultra HD 4K 60 Hz video pass-through; 4:4:4 Pure Color pass-through 8 HDMI v2.0 Inputs / 2 Outputs 7.2 channel; 185 watts per channel maximum power Audyssey Bronze suite of advanced DSP processing algorithms Kindly refer the manual below in product description and page 205 - 220 for trouble shooting issues with this product