It sounds like my recorder is like the bottom level of digital recorders that would make your grade if used at their highest settings. which was sort of what I expected - that it was likely the cheapest recorder that would actually do an acceptable job. Cool!
Only thing was this bit:
4. A to D conversion should be a 24 bit system. The 16 bits usedd in regular voice recorders do not provide sufficient resolution.
Where would I find out that info for my recorder?
Most good quality recorders provide this informaton in their technical specifications. This would be considered a selling point and if the particular recorder did meet this spec in all likelyhood they would advertise that. If you can't get it there, it would be a part of the service information provided to service centers. You might also try Googleing the make and model as well. Often someone has evaluated that model and done the research to dig up the specs.