Yes, even now my wife prefers to listen to LPs on her teenage portable player. It is the sound of her youth. Similarly if you are a fan who could only listen to AM radio, it is the change that makes the enhanced performance of the CD uncomfortable.
SB - I was a technician since 1972 working in TV studios. So I've seen all the changes going from 2" quadraplex VTR to the 10GB Ethernet server farms of today. I'm a little discomforted talking about the extreme high end of audio engineering because it was always a bit of a black art to me. I think the main difference is between passive and active listening. Our Sound Engineers were able to listen 'through' the sound and detect things I would never notice.
JohnB, or may I call you Sloopy
I think the Dutch translation may be suffering, and my Babelfish has gone on strike!
Listening at high volume: I'm a bit baffled about you talking about AC and DC. If what you are listening to is relatively uncompressed, then the amplifier volume setting has to be high, depending on listening conditions of course. Then you can hear quiet passages above the noise of the traffic. So, to handle the loud passages your amplifier has to be able to handle the signal and not clip and therefore needs a high power rating. The speaker essentially has the same challenge. If buying separates for the home, it is therefore important to match the speaker to the amp. Much better IMHO for the average listener to go for active speakers, where the amp and speaker are integrated, then there isn't a matching problem.
CD v Vinyl: In this area there is no contest, CDs have a maximum Dynamic Range of 96db whilst vinyl only manages 60db or so. Thus CDs are superior in reproducing the long term texture of music that has a wide DR.
Of course it's a wholly different ball game when you factor in compression especially in popular music. Not just what compressors do after the fact but also the different dynamic ranges of individual musical instruments.
On this I am certainly no expert, but suffice to say some of the best technical people are still battling with the issues.