Sorry Ron but what is leaving the speakers is being captured and processed the same by the phone and by Vimeo. This means what is being captured should be equally representative for whatever source you are using.
Some of the limitations of recordings are:
- distortions on a "macro" level due to the the imperfect frequency response of the microphone at the listening point, essentially (but perhaps to some lesser extent to the quality of the ADC)
- distortions on a "micro level" - "noise floor" of the recording is higher than that of our system, linked also to microphone sensitivity, ADC quality, compression, etc...
There are obviously limitations also linked to the system (DAC/amplification/headphone...) used to listen to the recordings.
I am not 100% sure about this, but I believe it may be easier to get a relatively flat frequency response using entry level recording equipment, but that you really need to invest in pretty high quality equipment (essentially, what is being used for professional recordings) to improve sensitivity.
So you could conceivably capture the overall sound of a system "faithfully" with a recording, but miss out on the subtleties ?
Not sure if any of this makes sense!
I guess Ron is assuming that there are more "subtleties" with vinyl than with digital ? IMO the entire system determines this, not just the source, but that's really a topic for another discussion.