Just 2 cents here, but I have the Nova III’s as well and am using an old MC402 and am very happy with my results. I can’t speak to the Mc Pre amps as it’s been years since I have had one, I am using an Audio Research LS28. One thing you don’t mention is cables, I have been using Cardas in my system for years. Recently I upgrade older Golden Cross for Clear Reflection and I swear the III’s testes dropped! The bass came alive and deepened tremendously.
Good luck!

