Reporting my DR-1 experience to date:
So far I've used my DR-1 to record two performances: first time for an unamplified classical piano and violin performance, second time was for an acoustic&lified jazz quartet. Mics were DPA4061, powered by Coresound batt box. Both shows were with the original (v101) firmware. I did first set/second set comparisons of the DR-1 vs my 11 yr old Oade-mod Sony D8 for both the classical and jazz performances. For the classical performance, the DR-1 was set to record at 16 bit for direct comparison against the D8. For the jazz performance, the DR-1 was set to record at 24 bit while the D8 recorded at 16 bit. Both DR-1 and D8 used mic-in jacks at low gain.
During the jazz performance, I also ran my open-taping rig(Schoeps CCM4>Oade ACM HD_P2) for comparison with the DR-1 and Oade-mod D8.
As soon as I can figure out how to share files with TS members I'll do that, and ask for your feedback. Meanwhile, my opinion is that the DR-1's preamp is not as detailed as either the Oade-mod D8 nor the Oade ACM HDP2(not surprisingly). However, it is quite musical and resulted in a very enjoyable recording, particularly on the jazz quartet (especially the sax). Sound was neutral, not colored. And at 24 bit the DR-1 did beat out the 16 bit D8 in the "sense of room space". If I hadn't heard the others right next to it, I'd have been very satisfied with the combo of 4061-> DR-1. I would love to hear it against other small options like the PCM-D50, PMD-620, R-09, etc.
Ergonomics: I dislike the gain wheel--its a recessed: good to prevent accidental movement but I found it hard to make small tweaks in gain with one hand holding the deck firmly on the table and the other index finger trying to increase or decrease the gain slightly. It would be even more awkward if you were operating lo-pro. Also, there is no dedicated "light" switch and during the performance I couldn't figure out how to turn on the light without messing with the recording. Got to research that....
I had no noise from the mic jack as reported previously by another TS member.
More later, and hopefully links to files to listen to.
Pete