I had the 1.7's and didn't find them too difficult to power. One of the amps I tried was a Cambridge Audio 640 integrated and it worked fine. If you go with something similar to that, you shouldn't have any problems. The 1.7's are harder to drive than the MMG's.
Magnepan MMG Speakers?
Having not been in a position to build a proper stereo system the last few years, I'm finally ready and I'm about 90% sure I'm buying a pair of Magnepan MMG speakers. My speaker budget is approximately $600-$700. I have a PS Audio IV stereo pre-amp and am also in the market for an amp, so please feel free to make recommendations (approx. $400 budgeted.) If it matters, I prefer listening to CD's of live shows (Dead, Widespread Panic, The Clash, Burning Spear, The Meters etc.) and have thousands of soundboard, matrix, etc. recordings of random music acts, but I would also like to utilize Bluetooth aptX technology to play Sirius radio via my Android phone. I've been out of the loop and it's kind of overwhelming. Thanks!