i've been building quite a few iteration of the lm3886 for a few years now.
from the simple inverted, non inverted, buffered, valve buffered, regulated, to the more complex current iteration of the multiloop/current pump lm3886.
they sound really nice. my current resident amp powering my HT setup is based on a bridged, balanced lm3886.
though i could afford poweramps from onkyo, marantz, rotel, emotiva and the such, i still prefer to DIY for the fun (flexibility) of it.
I kinda dig those, guys. Especially the blue light. But seriously, those LM3875 and LM3886 have been favorites of mine for a long time. Inexpensive, easy to design with and great sounding!
I must say, I've never taken a liking to the T-amps. Even though the technology is interesting and makes sense, I just don't like them. But the LM38xx amps are more my style. Hard to say if this gives me a preconceived notion or not, but I do think they sound better.
I cannot BELIEVE how beautiful your builds are. You must have some metal working gear around. Wow!
I could probably drive headphones with a pair of those without even heat-sinking the cases. There are some nice made-up board and power supply combos out there for under $40 a set. Anyone have experience with them?