I bought a stock Rogue 99 pre right before Christmas. I have not changed a thing yet, and am really not in much of a hurry to. (yet) I do have some NOS 12au7 and 12ax7's from Upscale Audio from my prior pre, and I will probably swap them into the phono section at some point,but as I said, I'm really loving this thing right out of the box. I'm glad this thread got started, as I'm anxious to hear what improvements can be made. Also, I am using a 7 m. IC between pre/power with no problems at all. I do have a question for owners of the 99: Has anyone noticed a difference between running the gain low and the volume high vs.full gain and less volume? Rest of system: Mccormack DNA 1 , Rega Planar 25/rb600/ rega exact: Rotel951/MSB Link II: PSB Stratus Gold, vibrapods, Brightstar bigfoot, home made sandbox, ...