It is all digital.
The interface is very intuitive.
The great deal with it you can use it with earphones, plugged to a PA or a Power Amp. It could also be use in your Fx loop for delay reverb and modulation or as a preamp. You can also use it as a speaker emulator. It is like a swiss army knife. Could be used for recording also.
The sounds is very good, it does the trick, it only fails when the system is clipping or when you don't hit the sweet spot in your settings, which can take sometimes.
It still remains "unreal" you won't get that organic overall 3D sound created by the air or any moving component, that the only issue with this.
Line 6 seems to work with Bogner for their amp. In the mean while this is a great tool, it sounds great. And this ton of settings and seriously you won't have anything else getting as close as the original.