I have always been wondering while Vacuum Tubes is coming back to the Hi-fi market. These new productions run are not up to par with the NOS or vintage stuff from the 50-80th ? Our equipments and technology are better, so what is holding the new productions back ? Pricing ? Well, some NOS is priced as $250-300 each tube....isn’t that good fo a market enough for the new modern tubes to start balling ?