I have tested them a bit, just recording from home, and they seem good. The capsules used are Panasonic WM-61s. I am having problems with the switchable battery box though, when I turn the bass roll off on, it cuts the signal level so low you can hardly hear the resultant recording. With it switched off, it works well. I am waiting to get my Dad's old minidisc recorder, as my MZ-N1 is crap and always has been with any sort of mic/line in device. When I get his, I will update. I would be tempted to get the mics and build a batt box, as that would work out a lot cheaper G.