Driving Magnepan 1.7

For those of you who own these, I am curious as to what you are driving them with. The room they would go in is roughly 20x18 wood floor open. Amplification has not been decided yet but will be tube. just moved and dismantled my old system and want something simpler. Integrated amp or mono blocks, preamp and cd player. This is a music only system. I have a feeling the amps I am looking at may not be powerful enough but I do not want to color your answers.

Thanks