The Gen 4 has a different architceture and different tubes mate better with it than Gen 3 architecture.
To find out of tubes can be rolled is public info. Do a google search!
6h6p is a smmoth more laid back sound and some people like a more forward hard driving sound. That is the yin/yang of tube rolling, as well as better rendition of different parts of the frequency range.
To find out of tubes can be rolled is public info. Do a google search!
6h6p is a smmoth more laid back sound and some people like a more forward hard driving sound. That is the yin/yang of tube rolling, as well as better rendition of different parts of the frequency range.