need help on transparent sounding 12au7 tubes

It's been my experience, over the years, that any equipment with nine pin Mullard or Brimar tubes installed had an added warmth, sugary glaze or "tubey sound"(as the originator of this thread put it) that simply does not exist in live music. Said coloration was easily eliminated when the tubes were replaced with those of German manufacture. What others may prefer/enjoy/seek in their sound does not concern me, as Scar972 asked about "transparent", "detailed" and "resolving" tubes. I replied based on what I know to be true. Scar972- Kevin Deal at Upscale has a great amount of experience with the tubes that he sells, in a wide variety of components. Call, and ask him for suggestions regarding the presentation you'e seeking.

Tvad, I recently changed rooms to a smaller, nearfield presentation. I had used the Mullard CV 4003 in my PrimaLuna integrated amp and felt the sound was to "warm" in my old room. With the new room set up and the same equipment I tried the Mullards again. Wow, I now know what the hype is all about .

Scar 972- Please let us know what tubes you end up with, and your observations. Tvad- What ever you enjoy is just fine with me(I don't have to listen to it). Rock on!

Thanks to all.
I've read that the RCA clear top I'm using are considered clear and not tubey. Last night, the system sounds amazing, and my initial feeling on this pre may be wrong, I have to listen more to know if I need to change tubes at all.
As I said in my previous post, all these recommendation is great because I will use them in the future, my listening preferences do change from time to time. FIY, just added pics of the new preamp to my page.