Harmonically, this is a very neutral sounding tube yet still sounds rich due to the amount of detail coming through. The acoustic environment sounds very natural and expansive. I can instantly hear the space where the music was recorded. The bass is solid and articulate and the highs are airy and sweet. In my system, it is a very synergistic combination with the 5AR4-WC-V2. I don't know if I could be happier.
These are the best sounding tubes I have ever tried and I have tried a lot of them. Not tubey sounding and yet they open up the music and make it compelling in ways you can't get with solid state.
I rotate through different sets of tubes every few months to enjoy the flexibility of my setup. The 6N1P lineup is always highly enjoyable. I'll be back!