Well...electrically-recorded 78's do have a surprising degree of fidelity...for quite logical reasons. Acoustic recording effectively cut off the low frequencies around 200 Hz or so...where even the fundamentals are well within the range of the human ear...while electric recording, even in its early years, could record much lower frequencies (and did). I have pipe-organ recordings on Victor and Columbia, made in the twenties...which actually provide the sort of bass response beloved of present-day "music" lovers... bass you feel rather than hear. The weakness in that era was the effective 8Hz top-end cutoff; however, that only removes the top octave from the recordings! I suspect that twenties record buyers were more impressed by the bass (which they had never heard...even if it could have been recorded, it wouldn't have been reproduced!).
Steven C. Barr