What Russian forum that you speak of ?In chatting with Flux Labs they seemed confident that FA-12 was powerful enough for Argons and they were definitely pushing me towards the FA-12. Thinking we need quantify the difference between these two amps. It's clear the FA-10 is more transparent (more power) while the FA-12 is pleasantly colored. Maybe we need to find and join a Russian forum?
Yes, can tell the FA-12 able to push Argons. Give you a thicker, more bodied sound and also power sufficient.