Schiit Freya S or Schist Saga S are JFET. I own the Freya and recommend it. You can choose between passive, active JFET, active tube. I've owned Rotel and Adcom preamps and prefer the Schiit. I also owned a Nikko Beta 1 but don't have a memory that I can compare to the Schiit. The Nikko...