Which Class D Amplifier? PS Audio, Ghent, Nord, Merrill or other???

I installed new 500w p/s modules in my NuForce, then sent them to Bob Smith @TDSS for the rest of the goods, amp searching is over.

Tube Dac and Preamp in front of these, mandatory in my book and ears.

Other amps I’d ever consider would be NuPrime Evo-1 or Rowlands.