I have a simple question about the Amplifi Remote iOS App. I realize the application will need Wifi to communicate with the web to download sound presets and do all that sort of thing. But when I'm just using my iPasd to control the FX100 unit at home or on the road, how does the iOS Remote App talk to the FX100? Is it through bluetooth or a wifi connection? What I'm really getting at is, can I control the FX100 unit without a wifi network? Like if I were to go busking at the market for example. Thanks!