Fjn04, I think you will find that the Atma-Sphere MP-1 does all that you describe, and with a great neutrality. It will not have that euphonic warmth we sometimes associate with tube electronics, it is quite neutral, but it will have superb rendition of harmonic overtones, timbre and recreation of soundstaging in width, depth and height you value. Then it will deliver transient speed, detail and resolution that will delight you, but without any artificial highlighting or edge.
Best wishes in your search,
Best wishes in your search,