NAD M33 or NAIM UNITI NOVA?

Either should do the job well and both sonically are well suited to those speakers.  Not sure about NAIM inventory but M33s have a typical wait time of 90 to 180 days due to COVID.  I have a bunch on order.  

It is frustrating but that long lead time is reflective of global demand for what is an awesome unit.  Alternatively, I have listened to the Naim unit driving Focal Sopra 1s and it is lovely.  

I have never heard that Hegel.  Can’t say how it would compare. 

I had Naim Uniti Nova and can vouch for it. They are amazing for the price and they sound very musical. Don't go by their wattage, as they are very conservatively rated. They can drive most speakers with ease. They look and feel luxurious too. You might get for good discount now as they have been there for a while.