Perhaps, Where will they actually be made and really by whom. The original fabricating gear is probably long gone as are the original materials the tubes were made from. I have heard stuff like this before and usually it doesn't live up the promises. But then in this case I must state that I am not fond of the directly heated triode magic that some hear. I figure that highish levels of second harmonic distortion (that some say sound nice) is still distortion and to be avoided.