Recommendation for used Amp to power Magnepan 1.6

As a long time Maggie owner, they need lots of current.  At your price point I am reluctant to make suggestions other than you may need a bit bigger budget to make them bloom.

I spent about 10 percent more on used amps than I spent on new Maggies.  I also use a tube pre amp and the combination is magical when you get enough power to them.  

Good Luck in your journey!!!

Richard Gray, who is a Maggie lover, told me that I needed 300wpc into 4 ohms to make my 3.6r's really perform. With his blessing I bought a used Parasound Halo A21 here on Audiogon. I've been very pleased with the results. 

I agree with @Ihassaguy. I own a pair of 1.7i Maggies. I had Schiit Vidar monoblocks. But I sold them because one channel went into thermal protection when I played Jeff Beck loudly. I think the best I can recommend for a reasonable price, but outside of your budget is the Bryston 4B3. There are plenty of used ones around. So you don’t have to buy a new one. They have plenty of power. When you get more cash, you can also get another one and run them in Bridge mode as monoblocks. 

If you can find the old PS Audio 200C in good working order, it puts out 200w/ch at 8 ohms, 400 at 4. I've seen them go for around $400. Check the power supply capacitors!