Phaelon - The Sophia Electric website posts some helpful User Reviews/Feedback for each type of Princess. I agree with their assessments. Depending on your system and your musical tastes, a particular kind of 300B(mesh vs. carbon plate) may be used to better advantage than the other. The new Royal Princess somehow seems to magically combine the strengths of each kind of Princess - Mesh and Carbon.I say 'magically' because from outward appearances, the tube looks like a Carbon. Yet it has more of the air and extension of the Mesh, while keeping the dynamics and naturalness of the Carbon, with perhaps an intermediate seating position in the hall.
I've tried all the 300B tubes except EAT and this is the best for me.
I've tried all the 300B tubes except EAT and this is the best for me.