if using the V3 analog out > line in on R4 you are still getting the coloration (or degredation if thats how you characterize it) of the mic pres going that route. if this statement is wrong, let me know, as I'm not 100% sure on that. I guess one other point is that you need a pretty decent playback rig connected to your computer to acurately time-align and master the 4 trks, as well as a good editing program.