Sep 20, 2018
Hifiman HE-4XX and Little Bear B4 great daily portable combo!
Afroman54, Buems, and 1 other

I've been dragging mine around with my O2 as a portable rig. I do like tubes better for 4xx though. Might have to see if the B4 has a big brother with more juice.
I haven't looked much the B4 is already large unless they were able to squeeze more power into a smaller footprint with another little bear amp idk if it would be usable portable the B4 actually powers them fairly well surprisingly. They claim to put out about a .5 watt.