Hey guys, confirming that the new amp is ground up new design. Completely separate to the DIY thing. I'll continue supplying and supporting the DIY market, and that whole community - however in 2022 we'll be releasing new production amps that can only be obtained from us. I.e., no kits etc.
...and yes, we are working on making the Alta100 (and what follows) manufactured and available in the USA. Stay tuned!