The most high-fidelity record I know of is the direct-to-disc recording of Carlos Santana and Paco de Lucia in acoustic duets.
Unlike the others in the direct-to-disc series, there was supposedly no console between the artists and the input to the master record-cutting stylus, and no remixing after recording.
The difference was quite apparent, and I have always been convinced that the fewer electronic components between the artist and the listener would yield the best reproduction.
I've never even heard a simply amplified PA system sound as good as the acoustic instrument the mike is attached to. This is with high end pro equipment, not home audio stuff.
Unlike the others in the direct-to-disc series, there was supposedly no console between the artists and the input to the master record-cutting stylus, and no remixing after recording.
The difference was quite apparent, and I have always been convinced that the fewer electronic components between the artist and the listener would yield the best reproduction.