Pubul57, I hear about timing a lot these days but its one of thoese things that I really can't say what causes it, although I do know that a lot of circuit complexity does prevent it. I don't like the word 'dynamics' as too many times I have found that audiophiles use it when what they really should have said 'distortion'. So I like to use the words 'impact' and 'authority'. Impact is the ability to respond to intense dynamic change, and authority is the ability to sustain it in the way that the source demands.
Both seem to arise more easily if the circuitry is kept simple, and certainly avoiding loop negative feedback will make the circuit more responsive to dynamic change.
As I have mentioned before, imaging and soundstage seem to derive from bandwidth, extending well beyond audibility. Oddly, what a lot of people would describe as holographic, wherein the image places *in front* of the speakers, or there seems to be unusually wide soundstage effect, nearly always seems to come from phasing anomalies near the edge of the passband. For example, as much a fan of tubes as I am, a tube amp that has poor high frequency bandwidth deriving from its output transformer can exhibit a form of this behavior. If they have good bandwidth, nearly all amps will image in a very similar way, with the variations being in how well they can render the individual images as 3D entities rather than as a cardboard-flat images, and how well the more subtle ambient cues are articulated or truncated, depending on how well the amp can reproduce detail.
