Ghosthouse, I looked at the thread on head-fi but I find it is not interesting at all because it is all about tubes tubes and more tubes. Tubes was interesting after the early release of the the transistor that at that stage was inferior to tubes.But now is 2016 guys, not 1976! Why don't they change over resistors, capacitors or other electronic parts? Easy because they can't and that's why all the talk is about changing tubes. Where the passive and JFET options is far more superior sound wise to the tube stage. The longer I play it, the more I prefer passive, as this is most neutral in sound. I prefer "the closest approach to the original sound". And with my Quad ESL 63 full range planars that is passive.