Hi there. I bought an MZ N-707 brand new the other week after weighing up the options of what machine to buy on the forums. I had previously used a Sony recording Walkman for taping gigs and latterly a Panasonic one with good reults. Having dropped it one too many times (once in front of a security guy coming out of the gig. It being silver he thought it was a digital camera.) I decided to have a go at minidisc recording. I had a skytronic mic from those early days and had also purchased a Vivanco battery box and mic, but found the hassle of carrying a box, mic, recorder and wires too stressful when trying to get into the gig. I only used this once and didn't think the results were that great. I was in London and was recording a gig and wanted to invest in a new mic so went down Tottenham Court Road, which is full of electronic shops. After a lot of searching I decided upon an Olympus ME51S stereo mic, this is not battery powered. This recorded the show reasonably good so I thought I had made the right choice. This was recorded through the Mic In socket. I went to another gig in a large hall last week and the results were OK and clear, but the sound seemed to be pulsing in and out, like a radio station that is going in and out of tune. Does anyone know the reason for this? I was stood in front of the mixing desk to the right, close to one of the speakers. Would I have been better in a more central location? I use an extension cord with a volume control, which I think is the equivalent of a Radio Shack volume control. I plug my mic into this, then the cord into the Mic In socket. I am thinking of selling the Olympus mic and buying a Sony ECM-719 mic. With this model, seeing as it is battery powered, would I be able to put it through the Line in socket to get a better sound or would I need a battery box? Also, on another note, last night I was using the player and I was near the end of the disc recording a track and the REC ERR message came up, followed by TOC ERR. I looked in the manual to see what these messages meant and it said to try recording with another disc and try erasing the contents of the disc. Is this just a random error or is my machine dying. I've only had it since the end of January. I am worried about its reliability in case it does this when I'm recording a show. I am very impressed with the forums and they have helped explain things regarding recording that I would never have known about and I could have ruined the live recordings I've made so far without these tips. Sorry to have rambled on a bit.