I know the VH4 has midi switching cappabilites but what exactly does this mean? Can i only footswitch channels if i have the midi controller? Or can you buy a footswitch that will do it for you? And can you pre-set Eq's or is it mainly just for the many effects loops?
You can use a footswitch to change channels (you can buy it from Diezel, or a Diezel dealer i'd assume), but you would also do it via a Midi pedalboard. And, when you say "pre-set EQSs", do you mean have one channel with a couple different EQ settings? No, whatever you set the amp's channel's EQ to, it'll stay that way unless you use EQ from any multi-fx or EQ pedal, etc.