Among other things, yes, uncompressed. But so much more. True height information. True depth information instead of an approximation created by varying volume levels in the mix and the woefully inadequate ability of mics and mic technique to capture room ambience, good S/N, and accurate tonality at once. Perhaps most important, certainly most evasive - the true dispersion of individual instruments. Violins, pianos, trumpets, acoustic and electric guitars, drums, etc, etc, etc, all have very different dispersion characteristics and very different FR from different angles around the instrument. They are not omni directional, bi-directional, cardioid, etc. They are all of the above, none of the above and infinitely varying depending on infinite variation.
What microphones are capable of capturing and speakers are capable of reproducing are a faint shadow of this incredibly nuanced and infinitely dynamic reality.
OK, but that's a different question. Playing only digital files from a computer that is galvantically isolated from and re-clocked before the DACs, I'm getting about as pure a signal as is possible at this point. Analog has its virtues, but even a master tape will not beat such a system in terms of noise. So unless you have an alternate definition of "pure," I'm good. But none of that overcomes the inherent shortcomings of the transducers at both ends of the chain. That is the ultimate weakness of the technology, not the electronics in between.
Tim