My amp makes 2 ohms of Kanthal wire glow like that ~~~~~~
The power transformer does not like it too much though, it got so hot that some wax on it started to bubble !
I also have some new power transistors coming in mail, those will be able to take 50A continuous current and have operating temp of 200ºC at max, much beefier than my current ones. Those transistors will never get that kind of use in this amp, but that only means they will never burn up hahahaha.
Good experiences for the nex amp I will build after this is done hehehe ~~~~~