I've owned the Rogue Sphinx V2 and the Pharoah.
Both have nice resolution, and overall dynamics, however, neither produces solid, deep bass at low volumes. If you always listen at somewhat loud volumes, the Sphinx is a good amp. Overall it has a "front row" sound.
I'd bet a considerable sum that if you listen to the Marantz and Rogue back to back at moderate volumes, the Marantz will play deeper.