Honestly it because the people who own Headamp Mini currently, also own tube amps and there were a few questions about tubes for these amps.
Also, I picked up @BondDaBoom Pendent, who just also picked up Woo WA33, and @rrwwss52 he the third person in the community with this GS-X.
GS-X Mini Bellow the Pendent
I was looking at as well there is missing top-level subject on Tubes on the forum, what I found was about what tubes I have collected, I do not have the superpowers to move the post into a new subject