i've never heard one. just how good are these amps? are they another level above orion, memphis, and PPI? i think it's pretty cool that they are hand made just a few hours from where i live.
US Amps are great amps just like Zapco/Arc Audio/Xtant etc. However, not all of their lines/models are great. They do make some that are "normal". Zapco/Xtant/Arc Audio do the same thing, make high end models plus some mid/low ones.