If your amp doubles in wattage (or close to it)at 4 ohms vs.8 ohms, then it has enough current to drive Magnepans. The entire line sounds more like a concert stage than any box speaker and are very tweakable. This is a good time to get 1.6's or 3.6's used since the 1.7's and 3.7's just came out and many Maggie lovers have upgraded.