Spandy87
100+ Head-Fier
They'll do fine on anything, but I'd say go with a more neutral amp with these, something like the Schiit Magni 2. It's cheap, powerful, and more then you'll ever need for these.
I have an EF-5. Will that do? It's not neutral. I'm guessing a magni 2 won't exactly be an 'upgrade' but it might be more neutral. know what I mean?