I tried to use my Microtrack tonight, but had some issues, hope to get them ressolved soon.
#1) Setting levels. I tried to calibrate to my DAT to try to get some idea of what levels to use. Ended up calling tech support, which told me of one bizarre glitch. The L/M/H switch is apparently backwards, should be H/M/L at least on the early models. This seems right, but I'll have to play around a bit more to be sure. I ended up setting way too low, can't figure out the scale used on the meters. Tech support told me to email on this, the live guys had no idea whether the scale is linear or not, where -12 dB might be, etc. Also had to email as to whether the line-in volume set is trim only or boost. I set in the middle and got levels that suggest I should have maxed it as I do on my R1 for line-in. They are supposed to get back to me on where to set for unitary gain on line-in.
#2) Battery life. I charged it for the suggester 6 1/2 hours, after fooling around for a couple of hours I set it to run at 24/44.1 (concert to run 1 1/2 hours without intermission, also good to compare to Edirol R1) and went to tape. Glanced at the battery meter and freaked when it showed 1/2 down, switched to the R1 for the concert but left the Microtrack running. It was still going 2 hours later, with the battery level doen to around 1/4, so I guess this will be okay once I get used to what it's telling me.
The unit takes longer to power up than the R1 (maybe 20-25 seconds), and also takes a while to start a new file (firmware is version 1.0.2, no 2 GB rollover yet I think, though the time-left reading sees my whole 8 GB CF card). I haven't figured out yet if it's possible to run it with USB powering, when I plug it in to charge it seems to freeze out the switches, but I'm going to try changing the sequence of turning on and plugging in as soon as it's recharged to see if this can work.
Sorry to post such meager info, but it's what I've got and there doesn't seem to be too much else yet.
Jeff