I know I'm resurrecting a dead thread, and it has been several months since this post, but I have been recently looking at the 1.7 and had my first listen at the dealer you mentioned. I was very impressed by the 1.7 but was definitely underwhelmed by the bass response sans subwoofer, and thought that the specific sub he had paired with the 1.7 was a disappointment. As you mentioned, it was being driven by the Rogue Audio Cronus Integrated. Having read several places that Maggies thrive on MOAR POWAH, I decided I wanted to have a second listen somewhere else. I took a trip last weekend to a dealer in VA where I listened to the 1.7 driven by the Ayre MX-R and C-5xe. The dealer had a much nicer sub of the same manufacture as the first dealer, and I was much more satisfied with the bass response -- especially when I asked how he had the speakers crossed over with the sub and found out that the sub wasn't being used
I've become a believer that the Maggies need more than 55wpc to sound their best. However, I did think the low end wasn't quite as tight as I'd like, reading on the 1.5 thread here it seems that I'm not alone in this feeling on the 1 series Magnepans. I don't know if there is anything that can be done to correct that? What are the opinions around here on the C-5xe? I know that Ayre in general is pretty well regarded, and I certainly liked what I heard, but I wasn't much impressed by the internals of the amp when I looked for photos...