I was just searching around sites that sell amps and comparing all the wiring that i may need. What the sites don't say though is if the amps come with a power supply. So, when you buy an amplifier does it included a mains plug? or does it just run of other sources. Stupid noob question i know. Thanks
Most if not all components will come with mains cable. Most mid-fi and some entry level fi have captive mains (the cable is not-detachable from the component).
What you will need to supply is interconnect cable (to connect your source).