I demoed 1.7s at Audio Connection, where Johnny had them hooked up to NAD amps. Don't remember the model number, but from my familiarity with the NAD range I was able to tell it was a bit older but was not one of the big boys (i.e., it was smaller than a 218thx). But I thought they showed really well and there was no shortage of headroom. If you can find a NAD S200 (225 x 2 into 8 ohms, and doubles into 4), I think you should try it.
This all being said, I ended up buying Vandersteens after that demo. :)
This all being said, I ended up buying Vandersteens after that demo. :)