Why Don't We See More High Current Electronics?

Mapman, that depends on what your defining as more and what your defining as less.

I suspect your suspicions are spot on.

I have been considering trying a lower powered tube integrated in my second system where I already have a decent sub and fairly efficient tube friendly speakers (triangle Titus XS) currently driven to good effect at up to moderate volume by a "flea powered" 20 watt vintage Yamaha receiver. A similar 20 watts or so of soft clipping tube power might be a nice step forward. My inefficient but sweet sounding Stax sr-80 electret "earspeakers" I use on that system might benefit as well.

Your Stax "ear speakers" are, ehem, a different can of worms.

"Your Stax "ear speakers" are, ehem, a different can of worms."

No doubt.

They are similar to electrostat and other planar speakers, very inefficient, and require some power (not necessarily current) to drive well.

I do not listen that loud with these though. A 20w/ch or so soft clipping tube integrated could work quite well for these I suspect as well as with the Triangle monitor + sub combo.

They aren't expected to fill a room with sound.