Magnepan 1.7 i - Amp suggestions

I have Magnepan 0.7s. When buying I auditioned NAD 368 and Rogue Sphinx. The NAD had a bit more sibilance on vocals while the Sphinx sounded more natural. So I went with Sphinx and am very happy. BTW, ignore claims that any class of amp universally exhibits a common characteristic. I bought a Musical Fidelity class AB amp and found it brighter than a different class D amp on my particular speakers. There is no substitute for hearing the equipment yourself. You’re off to a great start with Maggies.

I've used a few Rogue integrated amps with my Maggie 1.7s and was quite happy with all of them.  The Sphinx is an especially good bargain and does a super job with Maggies.  Rogue is also a great company to deal with.  Currently, however, I'm using a Kinki Studio EX-M1 integrated amp with the 1.7s.  Reasonable cost, substantial power/current, and excellent sonics.  I will not be looking for a replacement amplifier in the near future.  :^)
Here's a short review that I wrote for this combination....

https://www.kinki-studio.com/news/ex-m1-magnepan-1-7i

Happy Listening - Michael

Hi, I drive my 1.7i's with Conrad Johnson MF2275SE amps. Avoid Class-D, buy used, plenty on the market. A lot of people swear by Sanders Magtech, but any amp which doubles in power from 8ohm to 4ohm will do the job. Good luck.

Regarding the Van Alstine 400R--tried that with the 1.7's years ago and sent it back. On paper it looked to be a great match but in listening, I way preferred a Marantz integrated! Was never able to relax and let the music wash over me in a way the less expensive Marantz did.

Interesting. I almost bought the 400R for my .7s but instead opted for Exposure 3010S2 monoblocks. I too was able to get very decent sound from a mid-tier integrated but the Exposures are a nice upgrade with plenty of drive. 

I am surprised by your results though, as Van Alstine is a big proponent of robust power supplies.