What is perceived as the problem with the pre and/or A/D in the 7XX series that would make one just use it as a bit bucket?
It may not be a perceived problem, just a preference for a different A/D.
I owned both a 722 and a 702, and used them quite a bit as bit buckets. I agree with all steve/tonedeaf said. Personally, I went from a Microtrack to a 722 as a bit bucket. At the time, the Sony D50 (which I now have and love) was not out and I wanted a bit bucket for using with my V3.
I made many, many fine 24bit recordings with the MT, but I don't think I ever once trusted it to make the recording, and I always backed it up with a JB3 or iRiver.
There are a lot of things I will look for in a piece of gear, and the 722/702 is a very nice piece of gear that provides a lot of flexibility. All the things that Steve said, plus:
- I did not love the 722's preamps for standalone operation, so I generally ran it with the V3 in front, but the 722 sounds perfectly fine on its own, so I had no qualms running it as a standalone recorder for the times I wanted less gear or whatever.
- The 722 can use the digital input to receive a clock input while recording off it's analog inputs. So I could easily use it to do 4ch mixes by using source 1 > V3 > MT, and source 2 > 722, with the 722 clocked to the V3 clock via it's coax digital in.
These were the main reasons I got it, along with the fact that it is bombproof and completely reliable in my view, so I knew I'd always come away with a recording. Though it was mainly a bit bucket, it's reliability, ability to perform very well as a standalone unit, and it's ability to be part of a 4ch recording system were it's main selling points for me.
I ran it mainly as a bit bucket until I got my Sony D50 and could use that to record 24bit files off the V3. I used the V3 for years and liked it throughout. Ultimately, I didn't want to use the 722 analog in and used it as a bit bucket since I didn't trust that I would like it better than my beloved V3. After getting the V3 and running 24bit comps for myself, I came to like the A/D stage of the 702 (and have the knowledge that I liked it as least as much as the V3 A/D), so I started running V3 (analog) > 702 as my main configuration.
Anyway, it probably is stating the obvious, but even as bit buckets the performance of the 722 is not the same as a MT, so if what you really want is a bit bucket, there are many reasons not to choose the cheapest one on the market.