Product support got right back to me, and wrote:
Since Balance is CoreAudio compliant on Mac OS, my guess is that the input levels for Balance in the "Audio MIDI Setup" utility is slightly turned down. Please make sure they're at 0dB.
If this wasn't it, please get back to me!
All the best,
Thats exactly what it was. I made an aggregate device w/soundflower a while back (virtual studio session via skype
). In deleting it, it did turn down the input for the balance (why? idk), but readjusting that corrected the issue.