I just bought a Crate TV60 from the Garage Sale. This is my first amp with a footswitch and effects loop. I'm just wondering about how to use all of these features. Is there a way to have the effects loop run through only one channel and switch between them with the footswitch, or does the effects loop always run through both channels? Is it better to use the effects loop? What are the advantages/disadvantages? Thanks for the help.