4. Outputs
At the very least, you need to connect your AV receiver to a television. This is easy if you have a television with HDMI inputs. If your television doesn’t have HDMI you’ll need an AV receiver with component or composite video. Other useful outputs include Zone 2, LFE/subwoofer (the .1 channel in a 5.1 or 7.1 system), digital and analogue audio outputs.