Tube question

Warren, the Penta/Shuguang KT88SC is as good an '88 as anyone has ever made, according to LOTS of folk, so now you've heard about an excellent current-production tube. Western Electric is currently manufacturing excellent 300Bs, KT88s, and others, but high quality is expensive--the 300B is $550 and the '88 is $350!!!!!!! http://www.westernelectric.com/pricing.asp

But things usually work the other way. After rejecting an entire production batch and being out of stock for a while, GrooveTube has those great-sounding 12AX7Ms again, but they're NOT great-sounding or well constructed this time. Read about it on the Tubes Asylum, http://www.audioasylum.com/audio/tubes/messages/188228.html .

Unclejeff is correct too. But there are other reasons, the principal one being costs. It costs a lot of money to, for instance, duplicate the esoteric material combinations and the excellent vacuum pumping used in decades past. Occasionally the Russians or Chinese get it right; the Serbians (Croations?) at Ei got it right for years, but they're now out of the tube business.

Oh well. My 'solution' is to use NP 845s because old ones are frightfully expensive, to keep all the great-sounding Ken-Rad 6SN7s I have, and to continue buying carefully the world's best-sounding 'N7, the Tung-Sol roundplate.
.

[Why, with all of our modern technology, is it that we cannot make a tube with the sound quality of the ones in the late 50s to early 70s. What was it about that time, that we cannot seem to duplicate that quality today.]Materials used,manufacturing techniques? Can anyone answer that question?

It's also about perception, which is hard to look past. If everyone says the old tubes sound better than the new ones, then people who are thinking about making new tubes are in a hole even before they start. In the audio world logic, the higher the price, the better sound; the older the tube the better it's made.

Companies such as CAT, ARC, Berning, Cary, etc., put out excellent products without a single NOS tube. Simple reason is that NOS tubes are inconsistant in quality and unpredictable in supply - the death knell of a manufacturer. Tighter tolerances and quality control cause these guys to throw out tubes that beat their NOS thousand-dollar-a-pair-on-ebay counterparts.

The quality tubes are there, but they come packaged with the rest of the product as they are an intergral part of the sound.

Why, for instance, with the labor cost in China, can't they make as good a tube as Amperex, Siemens, Telefunken, or the rest? Or do they, but we can't justify purchasing them and recommending them because they are so darn cheap? And you know that anything in hi end audio that is inexpensive can't be hi end...Also, what brand tubes, are CJ, Carey, Art Audio, etc. using in their rigs? Another also: Can/does Shuguang (specifically) make as good a tube as Siemens, Amperex etc did? What is it about a 6922 tube, or the like, that we cannot get right today? What is the complex concepts todays tube manufacturers are not getting right? Materials, labor, it would seem Russia, China has that? No? Why can't they make an even better tube? No market? What is Shuguang doing now, then? Still confused. Sorry for the plethora of ????, but I'm still not getting the answer.