I was lucky enough to get a MZ R70 from my wife for my birthday in Feb. I was so concerned about the running noise that I checked it with other machines in our local HIFI shop. They all had this noise. I found if I place my mic away from the unit it is not a problem. The recording quality is fantastic. With my PC simple soundcard I use a PC software program called CoolEdit2000 to record/edit from minidisc to PC then use my CD writer to make a normal CD for playing elsewhere.