I have a REF6 and I love it. I recently thought of listing it, solely because I wondered about the future availability of replacement tubes. But it seems like there is a significant demand and supply of tubes -- just look at the number of NOS tubes from the 50's and 60's available. I have a full replacement set of tubes for the REF6 anyway, so I figured that I would not mess with success. Maybe some of us, as we get older, prefer the convenience of solid state gear rather than worrying about tubes. One thing that I am NOT worried about is ARC's willingness to stand behind their products and repair them if needed.
