What is a high end stereo SUPPOSED to sound like?

Foster_9,
Well said, that`s my standard also.
Regards,

Like the telltale rustle made by ghosts of c-notes past...

If it's true hi-fi, it 'should' sound like the original source. However no stereo system does this, esp if you are sitting in front of it. My system which is very much lo/mid-fi CAN sound like a live artist is performing if I am listening to it while in a room other than the room the sytem is located, and it's solo or small group music. No stsero system will make you think the Chicago symphony is in your house, but maybe Joan Baez. The term 'high end' is not revelant. My system is just as realistic as any on this site i.e. it seldom sounds like the real thing. But it does satisfy my need to listen to music, and I cannot imagine being without it.

CDC,

All systems, even the uber expensive ones, impart color of some type. Hi-end is all about determining what color you want and can live with long term. As to your 3 points:

1] A system will make a recording sound different than what it was monitored on...that may be better or worse to you
2] Yes, a system will consistently impart its unique color on whatever it plays
3]The best you can hope for is a system that colors your music the way your ears think it should be colored

07-05-12: Cdc
IMHO, the Holy Grail would be 100% CORRECT room interaction. So would an anechoic chamber which has NO room effects be the best room interaction?

IMO, the answer is no. The total lack of ambient cues in an anechoic chamber results in purely BIDIRECTIONAL sound. That is very unnatural, since in the real world, sound is always to some extent OMNIDIRECTIONAL, due to the simple fact that the real world always has surfaces that reflect, diffuse, and diffract sound.

Likewise, a purely bidirectional presentation of music in the playback space would be very unnatural, since in the recording space, the music was to some extent omnidirectional. Even when the omnidirectional ambient cues of the recording space are contained IN THE RECORDING ITSELF, a purely bidirectional presentation in the playback space will still not sound like the recording space.

IMO, the playback space must create an OMNIDIRECTIONAL PRESENTATION, because that’s what the recording space always sounds like (unless, of course, the recording space is an anechoic chamber!). I don't mean that sound arrives at the listening position EQUALLY from all directions. I just mean that the playback space must have an omnidirectional reverberant field that emulates the omnidirectional reverberant field of the recording space.

IMO, the only time a purely bidirectional presentation will sound like the recording space is in binaural recordings, which are specifically designed TO EMULATE THE OMNIDIRECTIONAL PRESENTATION of the recording space. And that brings me to Foster_9’s comment that…

07-05-12: Foster_9
For me, a high end stereo is supposed to sound like music is being played in the room by real musicians, not by a stereo.

While I agree with the spirit of this comment, which is to contrast real music with a stereo, I will quibble with the phrase “music is being played in the room.” I don’t mean to be argumentative, but there is a genuine point to be made, which is this: A high end system should sound like music is being played in your listening room only if the recording contains FEW ambient cues of the recording space. In that case, you have the experience that “They are here.”

But if the recording contains ROBUST ambient cues of the recording space, then a high end system should sound like “You are there.” In other words, the system should create the illusion that you have been transported to the musicians, instead of the illusion that they have been transported to you. IME, the former illusion is much more difficult to achieve than the latter, largely due to the fact that the illusion that "You are there" requires a neutral listening room, and most listening rooms are far from neutral. FWIW, I elaborated on these ideas at great length in another thread.

All this results in an alternative answer to the OP's question...

A high end system should sound either like "they are here" or like "you are there."

Again, IMO, IME, etc.

Bryon