This discussion of vintage Neumanns, C12s etc. and great old vacuum tubes... Is it utterly impossible for a mic manufacturer today to make a mic as great as the old vintage mics? Are there NO tubes made today that, even if not exactly the same, are as good, or can be made to sound as good? Let's assume price is not an obstacle. I'm not asking "under $500" or anything like that. I'm wondering, can it be done? IS it being done? Are there any mics today that, if the supply dried up tomorrow, would be as highly sought after as a U47? If not, why not?