Dolby C cassettes, recorded on a Nakamichi home unit were capable of 20-20KHz when played back on a Nakamichi home unit or a Nakamichi automobile head unit.

No matter how limited the technology, somebody will come up with a device to extract almost every ounce of goodness from the source material. (Audio, video, almost anything)

I feel very fortunate to be living now with our wonderful recording / playback technology and the internet ability to quickly access recordings made even 100 years ago.

I treasure my vinyl (because of the music).
I treasure my CD's (because of the music).

I prefer CD's (or now wav files). I agree with Notes about surface noise and ticks on vinyl.

After faith, and family, music makes me the most happy.