Same thing as the pedal only it has a loop just like Boss NS-2 pedal has, that is you can run it twice infront of the amp and in the EFX loop. I think that's it for the most part ....
You know what mate, I might've been off a bit, the outlay is like a two channel thing but I think the technology is still more or less is a loop schematic, I guess ... anyways these guys have the best rep on this site and they are the only ones on the net who went out to really expalain things. http://rocksolidamps.com/index.php?contain=description&ii=58&mid=2