Upgrading my integrated amplifier for my Magnepan 1.7’s

Every step up in the Magnepan line provides a significant improvement in sound quality. 

The Mini Maggie's are supposed to be a miniaturized 3.7. My impression is that the Mini is definitely better than the LRS+ in terms of clarity and smoothness. Based on my experience with the Mini the 3.7's must be great in a nice room.

Coda CSiB is an amazing integrated and is one of the best amps I’ve heard. I believe Doug Dale (Coda designer) uses or used that amplifier with Magnepan. Give him a call. 

Thanks again for everyone's comments and suggestions. At this point I'm preparing to go to the store for a comparison listen and have narrowed it down to three integrated amplifiers. There's Mcintosh's MA9500,  Hegel's H400, and Bryston's Bi200.

I should also offer a caveat about my choices in that the 'look' of the device is important to me. I have no love for the Mac's retro look-- but it's a MAC! In fact if the Mac had the look of a Yamaha or Technics I'd push the button right now. The look of the Hegel and Bryston I'm cool with.

Maggies like lots of stable current and lots of damping factor to control the panels.  I'm a Luxman fan for those factors.  509X?  Best of luck in your quest.

I'm a "Maggie man" since 1977.  Maybe my 2 cents can help.  Maggies like CURRENT. That's much different than wattage. 

I have a bias toward Audio Research because back in the day Jim Winey (Magnepan) and Bill Z. Johnson (ARC) were neighbors and besties and they used each others equipment to test and refine their products. Basically "They play well together"  Perhaps a used set of Ref 250s (8K) and a 2.7 upgrade would thrill you. I would me! 

I have had wonderful results with Bryston monoblocks driving Maggies (again current) and they really "wake up" with the 700B SSTs I have used.

As always go to a dealer and audition them. You cannot make a good and satisfying final evaluation based on old guys like me chortling about what they love. Results may vary!