Why aren't new vacuum tubes as good as old ones?


Why aren't new vacuum tubes as good as or better than old ones? Don't we have purer metals? Precision equipment? Why isn't anyone making the highly regarded 7316s?
pmboyd
What price glory? My NOS tubes (two 6SN7GT and a Tung Sol 5u4g rectifier) along with tube dampers set me back as much as the headphone amp. Is that wrong?
Ralph, Have you considered useing the tube company that you told me of, and mentioned here on this thread, as a possible replacement for the tubes you use now as stock tubes in your products?
There is some subject dodging going on here...like regarding KT120 tubes. Do they have badly fired getters? Why do many feel they are great sounding, even compared to NOS whatever? Why have my 120s lasted 2 years of daily abuse and still show no signs of age? Do Psvane Treasures have badly fired getters? Why do the ones I use sound fabulous? Is New Sensor a factory full of worthless slackers pounding out junk? My re-issued New Sensor Mullards in my Class A guitar amp are perfect...why? Am I insane? I am? Oh...well...nevermind.
No Wolf. I think they sound good to you because of those bungee cords you connect everything with. And maybe you aren't completely insane it could be cabin fever with all that cold weather. Keep your chin up.