Using the Denon PMA - 600NE is a breeze. First, connect your analog sources like a turntable to the appropriate RCA inputs. If you're using a digital source, you can choose between optical or coaxial connections. For wireless streaming, pair your device via Bluetooth. You can adjust the sound to your liking using the rotary bass and treble controls. To use the subwoofer, connect it to the RCA pre - out. If you want to use headphones, just plug them into the 1/4' headphone jack on the front. When using the Analog Mode, remember that it turns off the dedicated digital input power source for a pure analog sound experience. Make sure to place the amplifier on a stable surface to reduce vibration. Keep it in a well - ventilated area to prevent overheating. Clean the amplifier regularly with a soft, dry cloth. When not in use, you can turn off the Bluetooth function to avoid unwanted interruptions. If you have any issues, refer to the user manual or contact Denon's customer support.