Well, from what I remember of Fremer's review, his opinion seemed to match mine, of the Constellations. They had bass, lots of it actually. It's just that they were delicate about it. It's not old school, monster amp bass. And that causes a little bit of dissociation, since you're looking at this gorgeous, big amp, expecting prodigious bass, and still it sounds delicate.
That could lead one to believe the amps lack slam, but I found the Constellations very laid back. They were actually the most laid back amps (gear, actually, since I had the preamp as well) I've ever heard! So, they were perfect for rock, specially badly transferred digital like early CDs, or recent, compressed recordings. And while they were laid back, even forgiving, they were also absolutely transparent and resolving, with perfect resolution.
Needless to say, I was very impressed

My only caveat was the preamp, whose ergonomics were not to my liking.
Oh, my impressions were on a Magico Q3, so yeah, Magico/Constellation is one sure way to go!
alexandre