I run my guitars through some of the guitar amp effects it has, the delay-chours- is hot aswell. I've heard about using it for drums but i can't work out what people mean when they say this.
I plug my guitar into the back and use it like a big effects pedal, im thinking i could do this with drums like, take my drum track signal out my mbox go into the asr then back into the mbox.
I read in the rza's wu tang manual he ran the bass line for "7th chamber part II" on 36 chambers through the Van der pol and the guitar amp effect(he doesn't say which one, there are only 3 though). I haven't tried putn bass through it but thats definately on the agenda in the near future.