I demo'd them with two different amplification options - a Wyred4Sound STI-500 Integrated Amp and a Naim rig (NAP 150X, NAC 122X, Flatcap2X). In my room, the N2X's performed better with the Naim gear. It didn't perform badly with the Wyred, there was just a better symmetry of strengths with the Naim/N2X setup.
I would imagine they would perform well with a Naim Nait5i integrated, which on the used market is a relatively budget friendly piece. Good luck.
-Mike