I have the edirol r-09 and the pdaudio system. PDAudio would be fine but I can't figure out how to get a digital signal out of it, and there are lots of accessories to deal with. The r-09 had no digital input which bothers me. With the hd-p2 it seems like I wouldn't need anything else-battery packs etc. and would it be able to input/output a digital and analog signal? It's quite a lot bigger, but is it manageable?