Tube question


I'm new to tubes, but there is a couple of things (well more than a couple, but for now): 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. I never, when hearing the scoop about great tubes, hear any new tube manufacturers being mentioned. Are there Chinese, Russian, American or the like, companies making very high quality sounding and constructed tubes? thanks in advance. warren
128x128warrenh
I agree it has a lot to do with demand, but...
It also has a lot to do with the engineers today vs. in the past. Today, the best engineers are in semiconductors/solid state designs because that's where the money is. In the past, the state of the art was vacuum tube technology, so the best and brightest worked in those fields and the fields that supported them.
Aren't these tubes a very simple design? How complex are they really? That difficult to duplicate greateness of yore? Looking at the inside one of these babies it just doesn't look that complicated. But then again what do I know? Anyway, I'm beating this to death. BTW, Andy Bowman of Vintagetubeservices.com, you mentioned, would disagree about the 12AX7s. I'm not going to cancel my 4 NOS 12AX7s nor my 6DJ8s, but on down the road, you can bet I'm going to sample some Shuguangs and hear what's up. I will then have a referent. The 12AX7s I have in my amp are counterfeits. Andy says Amperex are counterfeited the most, but all the big names have their problems with fakes. Man does he know tubes. A wealth of info that overloaded my tube ignorant brain. He was highly recommended to me from some other audiphools. And most of all? HONEST. When he says it's a NOS. It's a NOS. As you can see from his website, he have the digs to know.
I wholeheartedly support those who prefer to purchase new production tubes versus old, unreliable vintage tubes.
:)
I agree with Tvad 100%........Why purchase old tubes to go with your new equipment.I'll take those old ones off your hands and you can buy the latest factory fresh tubes offered from China and Russia..Vintage tubes to sell:Some Amperex tubes had a factory defect,looked like a pinched waist.Get rid of them now and buy new non deformed tubes.Other old vintage tubes had painted logo's that rubbed of easily.Get rid of them too..Again as a public Service to my fellow members,I'll buy these old tubes.:]
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Warren, yes, this has been beaten to death, just check the archives. It's a very common newbie question. It is what it is.
FWIW, there are better stock tubes available today then 10 years ago. Also, as mrtennis mentioned, many circuit designs today aren't as dependant on the quality of the tube as in the past. All of this is very good, as the prices of NOS tubes is getting downright ridiculous. It makes me wish I had invested $10K in tubes 20 years ago, I could be retired right now.

The other option is SS......

Cheers,

John