If they used neutral caps, I'd get some 6DJ8 BB's. In a good circuit, they are pretty hot sounding. They are not too far off from the 7308's, but they are better sounding IMO. I am not sure I have ever heard Ediswan's though, they have a good rep, but it seems a lot of impossible to get tubes do, so who knows what is true if you cannot get them to try?
Best tubes for phono-stage?
Both I and a friend had our Audio Research SP-15's(w/3 tube phono-stage)updated by Great Northern Sound.The update turned out to be incredibly successful,and,worth every penny!We have tried low noise TELE cca(TOO thin sounding),a few crappy Chinese &Russian types,Very good 7308 Amperex U.S.(non PQ)>My friend settled on BRITISH Mullard(GOLD PINS)and I on EDISWAN 5358 very low noise types.The results are fine,but should I still consider stuff like Other Amperex(PQ etc.)Bugle boy,maybe SIEMENS?Thought I knew a good amount here,but Obviously I do not.Really would appreciate feedback!