Maverick,
As Bdgregory said, you can drive the Mani-2's just fine with as little as 30 watts. Whether or not that kinda current is sufficient hinges largely on how loud Metro plans on taking the system, and the kind of experience he is looking to get from it. If he wants to play soft music at fairly modest volumes, than the aforementioned Accuphase should be just fine.
However, if he wants to crank things up a bit and enjoy more of a live / life-like experience, then he will have to put more juice through those Mani-2's. A lot more.
As Bdgregory said, you can drive the Mani-2's just fine with as little as 30 watts. Whether or not that kinda current is sufficient hinges largely on how loud Metro plans on taking the system, and the kind of experience he is looking to get from it. If he wants to play soft music at fairly modest volumes, than the aforementioned Accuphase should be just fine.
However, if he wants to crank things up a bit and enjoy more of a live / life-like experience, then he will have to put more juice through those Mani-2's. A lot more.