http://www.mil-media.com/tubetest.htmlNo samples, but ive heard many people mention Mullards,Sovtek, etc on this board..Do Mr. Lagrou(he is the head guy there at Millennia)'s observations line up with yours? I have no idea about sound variations amongst tube types/brands,(dont know much about the technical ins and outs of tubes at all other than that I much prefer the sound of a good tube amp to solid state) but I am very fortunate to have in my neighborhood 3 Elder TV Repair guys who have gone out of business and have tremendous stockpiles of NOS tubes.(and one guy who restores 40s and 50s era Radio Consoles.. Due to my geographical good luck I have been buying handfuls of the tubes that I see commonly mentioned(12AX7, AU7, EL34, 84, 6T9,300b, etc) ...most of what I get is Tung-Sol, RCA, Telefunken, GE, and Svetlana?(I think). I am too ignorant on the subject to fool myself into thinking that I hear differences among them, but I am curious as to what you all think about sonic variations among tube types and brands? Comments on Millennias spiel or Tubes in General? (