I have owned over 5 different models of Magnepan and topped out at 3.6. This is about 2 years ago. I have driven them with various tube and SS amps (Rouge, Audio Research, Conrad Johnson) and get good sounding, at least i thougth i did. Never owned a tube amp with more than 70 watt/channel so I can't comment how would tehy sound like. These highly ineffient speakers don't begin do show their potential until i drove them with a pair of DNA 500s/Audible Illusion 3A.
