50 ohm ortho drivers: How much amplification do I really need?

[FuzeSG]

I recently purchased Modded Fostex T50RP's, and from what I understand they require amplification to sound right, or get loud enough. I have been looking at a few different options and I've decided to go with a Schiit amp/dac solution. My only question is: Can I get away with the Fulla or do I need to invest into a Magni/Modi 2 stack combo? 50 ohms seems rather minor, however these being ortho/planar magnetic drivers, I'm not sure the impedance is the only factor here. Am I thinking correctly? Thanks.

 

[FuzeSG]

Any suggestions? I've also been toying with the idea of the Asgard 2 and Modi 2 Uber. Any direction on this would be greatly appreciated.