I've heard Magnepan's with a Marsh A400 and it sounded pretty good. The A400 should be available well under your price threshold. I think Marsh is a very underrated brand.
On the high end of your price range, it's relatively rare but you might find an Innersound ESL 300 that is designed for planar and electrostat speakers. Or perhaps one of the older high-powered Musical Fidelity amps might work.
Michael
On the high end of your price range, it's relatively rare but you might find an Innersound ESL 300 that is designed for planar and electrostat speakers. Or perhaps one of the older high-powered Musical Fidelity amps might work.
Michael