Reporting back on my experience with the conrad-johnson MV60. I purchased a used one which came with the following tubes:
E34L -- output tubes (newer version of EL34)
6SN7GTA Philco -- driver tubes
12AX7A -- input tubes
Once I got the MV60, I was not able to immediately experience the FULL potential of it because I had a 10 maybe 20 year old crappy AudioQuest Ruby 2 IC that was waiting to be replace by Cardas Golden Reference. By the look and sound of it, you could tell Ruby was way past retirement age.
The result? I would describe my system as powerful and full range of response across the spectrum. (Please keep in my that I had used Rotel Integrated prior to the MV60). Occasionally, even in moderate volumes, I thought I had too much bass. Now, based on what I had read about Quads, I am thinking this must be due to my room acoustics. No matter, I may need some bass traps, and diffusors -- and I should be set for a long time. Happy listening!