Yes, what Chris said about your input level being too low could very well be the cause, because it's not noise I hear in the room, it's a hiss in the background of the recording. But that's the easiest solution. If your input level is already high enough, then just running a slight hiss reduction will eliminate most of the hiss and you'll have a nice, clear recording. Think about when you listen to professional recordings. You don't hear any hiss at all. That's what I wish to achieve, but I can't get that close, either. When I listen to amateur recordings like all of ours here on my regular speakers, I don't hear any hiss. It's only when I use my earphones. But when you think about it, many people today listen to their music using their earphones only. You see people walking around with earphones on all the time. But like I said before, the level of hiss I heard in the two recordings I listened to is not that bad.