Not to get too negative here, but I'd like to ask DR-680 owners to list some of the things they're not too keen on with the unit. I know this deck seems great value for money if you need the tracks. But it also seems that 'number of tracks for the money' is almost the only reason people are buying one

-and we're having to turn a bit of a blind eye to a number of obvious shortcomings.
For instance, I'm pretty disappointed by the weak headphone amp and (to a lesser extent) it's funky volume control. This is of practical concern, unlike some other cosmetic or less-than-sound mechanical details I could perhaps get used to. Another thing (others have noted too) that seems really stupid, is the inablilty to link the gain control of stereo paired inputs, even when in 'stereo' mode!
I'm hoping FW updates will eliminate some of these shortcomings, as for me it's an impossible leap to the next most 'affordable' portable multitracker!
Dave