Maggie 20.7's: Sanders Magtech with Rogue Pharaoh as preamp

Hi,  Just purchased Maggie 20.7's.  I currently have 1.7's and a Rogue Pharaoh.  Selling the 1.7's and looking at getting a Sanders Magtech and using the Rogue as a passive preamp.  Any thoughts?  I know I need to get a Preamp soon.


Thanks, Bob