I was thinking about ordering Primavera, but found out that 811-10 is not in production anymore and nobody is selling it. I wrote to Trafomatic to find out how to get replacement SV-811-10 tubes and I was told that there is current production SV-572-10 tube, which should be a direct replacement. My other questions (expected tube life, possibility of buying 811-10 from Trafomatic, difference in SQ between 811 and 572) were ignored.
Anybody replaced SV-811-10 in Primavera already? Any impressions of SV-572-10?
P.S. As much as I love the Primavera design, it scares me just as much to be left with a very expensive piece of decor instead of an amplifier when the stock tubes die. And the manufacturer doesn't seem to care that much.