"Pace", it's importance for enjoyment?

What's the matter Snook, can't keep up with the "pace"? Now it's worse than before.

Whatjd: The biggest improvement in this area in my Redbook based system was gained by using the Neuance shelving (supported by upturned spikes) under the amp and player. If I had only one shelf it would then go under the player/transport. The difference is that it is now difficult to walk through the listening room without bobbing and dancing a bit when music with a good tempo is playing. The same goes when sitting as it is hard to keep one's feet and hands still. I think that this information is generally there in the source material, but it is often more than naught stifled by vibration in the components. Perhaps these vibrations create some sort of a canceling effect?

Viggen makes a very good point about the low frequencies. I have a hunch that all frequencies effect PRAT. I have noticed in the past that some of the signal tubes that I use which have anomalies (dips and peaks in roughly the 60hz-300hz range) also do not sound that great throughout the spectrum (general sound, not PRAT). Because of this it would seem that the low frequencies are effecting those frequencies higher up and I would assume that this would also work the other way around (the tubes by the way test fine above the 300hz range). I would guess that this problem in the low registers causes some type of distortion or cancellation effect to harmonics (perhaps even attack and decay) in the higher registers. Most musicians (especially guitarists) have first hand experience at creating such effects in that if one hits a harmonic on one string and then bends/pulls a note (on another string) to and away from the original tone, they can achieve all sorts of things from oscillation, to boosting the harmonic or even canceling or deadening it. My guess is that if one area of the music is not being reproduced properly, then that area can drag or distort other areas.