Well, I ended up buying a used DR-680 this week -- no AC adapter, no shoulder strap, and pretty roughed up. It had been owned by a film sound guy who traded up to an SD 664. I guess he wanted something he could really kick around.
Would have loved to have bought a new one off eBay, but it worked out to over $600 to get it to Canada, and I couldn't really justify the extra 200 bucks.
I did a four track recording a couple days ago and then played it back the same way Gutbucket does -- on my home theater receiver. (It's always been a great way to listen to my old TEAC 3440 tapes.)
The tracks worked out okay, so today I tried an 8 channel recording with my USBPre2. There was a bit of a scare when I couldn't hear playback of the digital track, but then I found a helpful explanation here in these pages about the MULTI/STEREO button and the track was there after all.
My question is this: Is it not possible to monitor playback of all 8 recorded tracks simultaneously on the DR-680 itself?
If you're doing a remote recording, it seems kind of a drag not to be able to hear playback of all your tracks at once.