Guido
it seems to me that you, as I, have experimented and have found no appreciable gain with tube rolling on the Ref3. I still maintain my stance on that as you and I have found changes that involve tube bloom etc. Again, differences will be heard, BUT everyone must ask of themselves "did I hear something better or did I just hear something different"
Strange that no one is offering comments on swapping a KT88 for the 6550C
it seems to me that you, as I, have experimented and have found no appreciable gain with tube rolling on the Ref3. I still maintain my stance on that as you and I have found changes that involve tube bloom etc. Again, differences will be heard, BUT everyone must ask of themselves "did I hear something better or did I just hear something different"
Strange that no one is offering comments on swapping a KT88 for the 6550C