Both good responses above. If I was to try and crystalize or simplify, ("too high-fi" being the antithesis of the responses above) I'd say that "too high-fi" tends to draw your attention to the parts, as opposed to the whole musical experience, thereby substantially reducing its visceral and emotional impact. The "whole" is what it's all about in terms of communicating to you. The parts are incidental. "Too high-fi" is about the parts.
Definition of "too Hi-Fi"
On numerous occasions others have described a speaker (or other component) as sounding “too Hi-Fi.” What does this mean? Isn't that exactly the goal? Doesn't High Fidelity mean faithful to the original, i.e., sounds like live music, live instruments, or a fool the ear impression of “I'm there,” or “they're here?” It seems contradictory to criticize something for being too close to perfection. Maybe that's taking it too literally. So. . ,
What does “too Hi-Fi” mean to you?
What does “too Hi-Fi” mean to you?