The Edirol R-09 is well designed. Very easy to use and sounds great. Here are my tests done by recording the same 40 second wav file Grateful Dead 5-8-77 Scarlet Begonias SBD.wav played on my home stereo. All are 24/48 normalized to 0db. Warning: large 10MB files.
AT853 mics (Sound pro CMC-4)
with SPSB-6 batt box mic in, low gain+25 :
www.xyzworks.com/R09_853_bb_mic_low.flacSounds best.
AT853 with SPSB-6 batt box line in+30:
www.xyzworks.com/R09_853_bb_line.flacSounds almost identical, shows that the mic pre is good, unlike the JB3 where line in is better than mic in. One drawback, had to max the gain.
AT853 direct in (plug power), hi gain+15:
www.xyzworks.com/R09_853_direct_hi.flacsounds almost as good, a little higher noise floor.
built in mics with lo cut on:
www.xyzworks.com/R09_internal_locut.flacNot bad for built-in mics, was too boomy without the lo cut, higher noise floor.