Amp pairing for Nad m51 and focal 816w speakers

Hi, I just purchased a nad m51 second hand, and recently purchased focal 816w speakers. Any suggestions on amp to use? Wires are acoustic zen matrix reference 2 interconnects and basic speaker wire for now but I have option to get acoustic zen holograms or satori and acoustic zen tsunami power cables at great deal for the nad and whatever amp I get. Please assist with amp pairing suggestion. Thanks