Since I am at a loss for words right now, here are some comments from Michael Fremer of Stereophile Magazine regarding the Mozart's bigger brother, the Beethoven Concert Grand. I have listened to both, and suggest the Beethoven just sounds bigger, but not really different in character compared with its sibling. I will let you decide from this description if they are "recessed", "quite laid back", "dynamic" or "flat". In any case, Fremer's comments resonate with me.
An Associate of Fremer's to Fremer:
"They're designed more for music lovers than for audiophiles,"
And Fremer himself
"Long-term listening pleasure
For well over a month, the Beethoven Concert Grand provided me with exceptionally well-balanced, nearly full-range listening pleasure. On top, the speaker was silky smooth, airy, open, and neither overly aggressive (unless pushed) nor frustratingly polite and soft. Bass extensiondown to the 30Hz areawas on the full, rich, supple side, but never sloppy or thick. The midrange was equally expressive and vivid, but not to where it was cloying or sounded like a coloration. The speaker's rhythmic agility was well matched to its transient performance: not the fastest and cleanest, but pleasing and natural to the point where I felt the best-sounding recordings I own were worth a spin, while the shriller, less listenable ones became more pleasing. That strikes me as an excellent real-world balance. Wine analogy: less Cabernet than Merlot.
While the Beethoven could rock and deliver large-scale symphonic thrills at reasonable listening levels, it excelled at putting me in the room with small acoustic ensemblesespecially those recorded live. Then, its airy, smooth, somewhat laid-back, enriched harmonic presentation offered a sufficiently well-developed illusion of reality to keep me coming back night after night, never feeling as if I were missing anything, and keeping me guessing the speaker's price."