@buellrider97
Thanks for this information. I haven’t had tubed equipment for 10 years so I’m still studying the differences between the myriad tube options out there. I plan on talking to Rogue about the 2 tube vs. 4 tube changeout. For sure I’m also not looking for that Mullard effect you describe, which I recall from when I was using a tubed phono preamp long ago. I'll for sure post my impressions when the time comes.