However, to my ears, they sounded too controlled to let music really flow (a consistent magico issue IMO), and despite being driven by serious amplification, sounded almost underpowered.
That's been my take-away impression of Magico speakers too (including the A3 I auditioned). They seek such an audiophile-approved sound of "control" and reduction of anything speakerly, that they end up sounding, to my ears, restrained to a fault. I hear all the details, but they don't reach out and grab me or groove.