Upgrading my integrated amplifier for my Magnepan 1.7’s

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! 

I agree with @pinwa , you need to stick with class A or AB.  My 1.7s sound much better with a 1990's 150 wpc NAD class AB Amp than they did with newer 300 wpc amps.  Hegel has a very good dac and high damping factor.  I like the suggestions of  luxman, bryston, coda and Audio Research as well.  There is no shortage of good amps in your price range.

https://www.usaudiomart.com/details/650105803-parasound-halo-hint-6-black/