As I read through your posts, I understand about every 4th word, so forgive my impertinence in asking such a simple question. But I'm tired of getting jerked around by Best Buy and Sony employees who know nothing :x , so I would really appreciate some help. I'm a high school music teacher and need a basic unit for recording cd's. The catch is I need inputs to record direct from self-powered stereo microphone as well as cd players and a mixing board for the big concerts. I would also like it to be able to duplicate concert recordings with the same machine. I know they exist. I have seen them, years ago even. But now that I want one, can't seem to find it. Any help for the audio challenged?