Low 1-A corresponds to an uncountably infinite (aka R, aka aleph-1) instances of qualitative superiority. Qualitative superiority is greater than just being countably infinitely stronger, so it can be considered uncountable infinity aleph-1, or R. This puts Low 1-A at R^R. Which I think is as much as conventional forms of dimensions can deal with; an uncountably infinite amount of axes, each with real number lines.
I believe that was talked about when we first moved to this system.
Trasncending that puts you at the next tier. 1-A is a step beyond that in the same direction, aleph-2 layers, or R^R^R, or however you want to represent it.