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Chinese Tubes Suck...or do they?

It's interesting that the Psvane 12a tubes are getting it right as far as sonics go.If it is true that they best Telefunkin and other high quality new tubes,that is something.I have wondered what the important factors were in making a new tube as good as the old ones.Im sure that the physical layout of the plates and grids is a huge factor.I also read that the old tubes had certain coatings on the plates that due to metal toxicity issues can no longer be used.To think that we are still talking about vacuum tube technology and vinyl records is...Great!
Dave

My theory has always been that back when tube manufacture was in its heyday, the sonics of one brand vs. another was purely accidental. I believe that the tube makers designed and manufactured their tubes to meet the established engineering specifications using their own proprietary designs, materials, processing, and manufacturing techniques. How they sounded was purely accidental IMO, and I'd be surprised if the engineers knew how to make a tube provide the clarity of a Telefunken 12AX7 vs. the midrange warmth of a Mullard to use an example. Don't forget that the vast majority of these tubes went into things like table radios and televisions, where audiophile micro-analysis of the sonics just wasn't relevant. Companies like Fisher, Scott, Fender, etc. may have selected tubes based on a number of criteria including sonics, but you can be sure that cost and reliability were huge factors as well.

Now that tubes are used predominantly in applications where sonics are of paramount importance, I imagine that some of the manufacturers are dissecting old examples and learning what makes tubes of the same nominal type sound different from one another. Even so, I think there is still a wide range of factors that go into selecting tubes for various applications. In guitar amps, for example, there are really inexpensive tube amps out there as well as high-end, expensive, "boutique" offerings, and stuff in the middle from the big guns like Fender and Marshall. The low-end amps probably choose the cheapest tubes that will last the warranty period. They don't have to sound good (and in fact they usually don't). They just have to provide distortion when overdriven to satisfy the usually less-discriminate tastes of their target customer. The "boutique" makers will value sonics over everything else, and I think lots of them still try to supply NOS tubes when they can. Fender and Marshall I'm sure must need to strike a balance between cost, reliability, sonics, and consistency of supply.

It's nice to see that the Chinese are apparently rising to the occasion and producing tubes with exceptional sonics (unfortunately with exceptional price tags to match). Seems that there are also plenty of "good" (if unexceptional) tubes being made with more emphasis on marketing cache through emulating the appearance and branding of the defunct old names, right down to copying the boxes. It would be nice if a new "Tung Sol" or a new "Mullard" was really a close reproduction of the old tubes, including (most importantly) their sonics, but I'm not so sure this is true. I haven't actually tried any of these "reissue" tubes, so maybe they do closely emulate the old stuff more than I think.
 
Read an article on one of the tube companies, the one that makes the shugang's I believe and the Chinese have perfected a method to get 100 times the vacuum of the old tube manufacturing equipment from 30 or 40 years ago. If the build the interior parts correctly, that extra vacuum will mean much longer life.

And yes, on earth at least, a vacuum is not a state, it's a measurement.
 
China is a large country with many manufacturers at various stages on the "learning curve," and representing a wide range of quality levels.

Yes, there is terrible junk being made in China. Some of us are old enough to remember when "Made in Japan" was synonymous with the worst, cheapest disposable JUNK we'd ever seen... and how that changed. China has a very different culture, and will not travel down the same paths, but to some extent they've been on a similar learning curve. We've all heard about how the Japanese kept the best of their production for the domestic market; the Chinese do the opposite, and export their best. That tells you how truly bad some of their production (that you never saw elsewhere) really was. However, as more and more Chinese become able to afford --and start to demand-- higher-quality goods, there is both overseas AND domestic pressure for manufacturers to upgrade their quality, and they have been doing it with a vengeance.

Would you say that Apple products (computers, iPods, iPhones, etc...) are generally well-made? Is their packaging high-quality? Well, guess what? They are "Made in China!" Most of them are made by Foxconn, one of the dominant companies in the field, which also makes computers for Dell and many other highly-respected brands. Inventec also makes some Apple products, and it's a Chinese company, too! IBMs have been made in China since the brand was taken over by Lenovo (a Chinese company). This is true for a large number of "respected" brands who choose not to talk much about it, because of the stigma associated with the "Made in China" label. However, it's a good example of how that label no longer automatically equates to poor quality, or poor quality control.

In tube audio, China, like the former USSR/Russia, is one of the only places where tube production never stopped --under a state-managed economy, they just kept on producing them through the years. Unfortunately, as we all know, centralized governments make terrible business owner/managers, so their quality didn't improve during those periods, but since the economic changes in China from a state-managed economy to a largely competitive free-market one, these companies came under market pressure to improve their quality... and they HAVE!

While there weren't many new tube-making start-ups, there was a slew of start-up companies jumping into the market to manufacture tube amps and gear using the China-made tubes ...and their quality varied greatly. Some former Hong Kong-based audio OEM companies moved their factories across the border, too. Some of these start-ups have fizzled, others have chugged along in the middle of the market, selling mostly domestically, but a few have expanded into the world of high-end gear aimed originally at the export market, and increasingly at the growing domestic audiophile sector. Some of those better brands, like Caiyin and Shuguang, have become international brands.

While there is still a general cultural tendency to favor "flash" over solid quality and to cut corners to make the fast profit, nevertheless their quality continues to improve at the top end, with some of the new "special" and more expensive tube lines, and it wouldn't surprise me if in a few years, some of the best tubes EVER made start coming out of China. They are at least working on/towards it!


It just seems like anything that comes out of that country is junk. Have you ever bought anything like a rug from Walmart? First time you try to wash it, it falls apart and screws up your washer.:thumbsdn: Brake rotors, harmonic dampers/balancers, bearings, Walmart type electronics etc.....

I hope they are making great tubes, but as long as Sovtek and my supply of old stock are around, they won't get my money.:no:


I hate to say this, but Walmart is at least as much to blame for this as the Chinese manufacturers themselves. It's called "the Walmart effect," and has been the subject of many articles and at least one full-length book of that name. Walmart's fundamental competitive principles are only TWO: (1) Walmart will always have the cheapest prices for the items it carries, and (2) Walmart will never be out-of-stock on an item it carries. The pressure of meeting #1 is largely responsible for them squeezing margins and thereby forcing manufacturers to cut corners on the cut corners they've taken off of the already-cut corners, to the point where most of what they sell is rubbish.

But shoppers have been overwhelmingly "voting with their dollars" for the cheapest prices, regardless of (lack of) quality, and they've made Walmart the biggest company that has ever existed. This relentless trend of ever-cheaper production has forced other companies trying to compete with Walmart to cut their quality standards, too, and contributed significantly to today's consumer culture, rife with disposable and planned-obsolescence products.

Walmart sources a lot from China, because it has been (until recently) a cheap-labor country where goods could be made more cheaply. You can't entirely blame China for the quality of the products made there and sold in Walmart, though: a lot of the blame rests with Walmarts obsessive insistence on CHEAPER production, no matter what. Walmart is truly extreme when it comes to this, using their sheer size as the largest buyer of almost anything, to strong-arm companies into reducing costs to the ABSOLUTE minimums, and they expect those costs to be further reduced every year, almost regardless of what is happening to the cost of raw materials, labor, etc...

[In case you are wondering, aside from reading, I'm speaking from close firsthand knowledge of several companies that manufacture in China for Walmart, including two companies owned by friends, with whom I've had close discussions about this. I'm a part-time paid consultant for one of them, with inside knowledge of various aspects of the business. I also know of at least two companies that deliberately turned away potential Walmart business (chose not to go beyond initial discussions with Walmart), because they didn't want to be subjected to the extreme "we own you and will squeeze you to near-death" Walmart approach.]


Getting back to audio tubes, though... to the best of my knowledge, Walmart doesn't buy these, and the tube companies in China have not been subjected to "the Walmart effect." Their quality, in my experience, overall still lags the best of the Russian and NOS tubes, but generally has been improving a lot in recent years, and the very best of the Chinese tubes today really are not bad at all. I wouldn't be surprised at all if soon, they become the best in the world, and I might believe it if someone told me that their latest best already are. I don't have enough firsthand and comparative experience of their recent TOTL tubes to be sure either way.


There is one other factor that is seldom discussed in tube discussions. Years ago, tubes were made with various metal alloy formulations and manufacturing processes which contained traces of toxic substances which are banned today, for environmental reasons. Some old techs have told me that some of those substances had an impact on the sound, and NO ONE will EVER be able to legally make tubes that sound as good again, because of the newer environmental restrictions. I don't know how true or untrue this is, but I've heard it from two old guys with lifetime experience in the industry, but who had no personal profit to be made from these claims. Maybe it is true? If so, it would be an argument in favor of NOS tubes over ANY modern production.
 
I have a Bob Latino ST120 and I'm happy with it. I run Jantzen Silver caps on it..

I have the KT88s and they sound great.

ShuguangSide.jpg


I wish some quality KT88 came out of the US... He11, I'd make a trip out to tour the plant.

I will say you need about 100 hours of burn in before making judgment.
 
Interesting information on the toxic metal aspect of the old tubes.Are there any chemical or electrical engineers here that can elaberate on that?It is true that many of the vintage tubes were going into table radios,but I saw a video on You Tube of a old Telefunkin T.V. ad.from the '50's or '60's that touted the clear audio quality of Telefunkin tubes over other brands.High end amps.and preamps.back in the '60's were supplied with tubes that we know are good and seek today,so they knew that there were differences back then.
Dave
 
I don't think there's anything too exotic - nor especially toxic - inside "ordinary vacuum tubes (we're excluding mercury vapor rectifiers, here!).

There were some transmitter tubes made with uranium glass (why, I don't know), but even that is really only slightly radioactive.
 
re-issue tubes

It's nice to see that the Chinese are apparently rising to the occasion and producing tubes with exceptional sonics (unfortunately with exceptional price tags to match). Seems that there are also plenty of "good" (if unexceptional) tubes being made with more emphasis on marketing cache through emulating the appearance and branding of the defunct old names, right down to copying the boxes. It would be nice if a new "Tung Sol" or a new "Mullard" was really a close reproduction of the old tubes, including (most importantly) their sonics, but I'm not so sure this is true. I haven't actually tried any of these "reissue" tubes, so maybe they do closely emulate the old stuff more than I think.

About reissues - I did some checking before purchasing the Tung-Sol 5881 reissue. Read enough to give them a shot. They are installed in a Cayin A-60t integrated. This is the same amp as the A-50t that has been reviewed in the press, with the exception of the power tubes - mine was built with 5881 as stock, the A-50 was equipped with EL-34.

I've been quite happy with them so far, and by month end will have between 100 and 150 hours on them. They replaced JJ 6L6GC. The JJ's had a subjectively "bigger" more spacious sound, but these TS 5881's have better low end control and what I feel is a more accurate less "tinkly" top end.

I still like the JJ's but am getting very fond of these TS 5881. They have a classic stubby design which is cool. This is getting off topic so I will end here.

ps - that's one in my avatar.
 
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I notice alot of discussion is centered around the cost.

The psvanes i picked up were 35 bucks a piece. I'm not sure if the price has gone up yet. I do know they are indeed slated to go up to around fifty bucks a piece.

Let me make a few points..

Small signal tubes sound qualities will be circuit dependent. When i said the psvanes killed my telefunkens, rca's, etc etc... i certainly meant in my conrad j. preamp. Your mileage may vary, however i have yet to read a review of these tubes that didnt say the same thing i have said. They absolutely are the best 12ax7, 12at7 tubes i have ever owned. Quiet, and perfect from top to bottom.

Now when it comes to price i kinda laugh, but i know why price is a factor. Its because most people pull them from unused electronics for virtually no cost, so when it comes time to put money down its shocking. But maybe these same people have a cartridge on there turntable that cost 800 bucks.

What made me purchase the psvanes was excellent reviews from people i trust.

What makes me want to buy more is they lived up to the hype.
 
A bit of perspective may be in order...

I, too, have heard a great deal about the price. It gives one pause. Then I remember that ever since I acquired these new bottles (Psvane) how much pleasure I have received sonically. They sound great! The fact that they may very well last the life of the gear that they are in is not considered. How many NOS stocks out there came out of consols and tabletops that had been used for years? And yet there they are on eBay going for top dollar. No warrantee with an expected life of who knows?

My two cents worth and now back to tunes...

PS - I have enjoyed this forum and have learned much. I have also come to the realization that I really don't have time to d**k with tubes and roll and search for more 'new' (read "old") tubes to prove a point. I just want to listen to the music and enjoy. Is that too much to ask?
 
cost..

The Psvanes and Treasures are a premium product, and appear to be developing their reputation now that they have been in the market for some time. TJ Full Music too. I think the cost is justified. I have the Psvane 12au7 in the amp I noted above.

The grade A's from Grant Fidelity carry a premium and undergo selection that you probably won't see on eBay. Between that, the testing they do and their relationship with the mfg, I am confident in the tubes I get from them will be of high quality. I also have the benefit of location, so I can visit the shop and talk tubes. No I am not a Grant Fidelity booster, the tubes are all I have from them.

If you want cheap tubes, the stock Shuguang aren't all that bad. And there are some more obscure Chinese brands if you search eBay - but caveat emptor for those ones.
 
The psvanes seem interesting,for sure.As far as NOS or used vintage tubes go,I doubt that most people are getting them for next to nothing,but rather paying at least 30.00/tube.If the psvanes sound as good as reported here,and the quality of the vacuum and tube in general is really good,I would certainly welcome them as a alternative to used or NOS tubes.Are they more like Telefunkins rather than Mullards,or are they closer to Amperex or another old tube?
Dave
 
A friend brought his Tubelab Simple P-P amp over on Sunday for a brief listening session. It's sporting Psvane 12AT7's and EL84's. I've heard this amp before with various combination's of NOS tubes, and was impressed by the sound quality for the most part. With the Psvane tubes, I believe the amp is performing at the next level, surprisingly good considering the rather modest circuit configuration.

jeff
 
The psvanes seem interesting,for sure.As far as NOS or used vintage tubes go,I doubt that most people are getting them for next to nothing,but rather paying at least 30.00/tube.If the psvanes sound as good as reported here,and the quality of the vacuum and tube in general is really good,I would certainly welcome them as a alternative to used or NOS tubes.Are they more like Telefunkins rather than Mullards,or are they closer to Amperex or another old tube?
Dave

Hmmmmm....I think if i was going to describe the sound of the psvanes i would have to say take all the best traits of all those tubes and put them together.


the bass is solid and extended. The mids are juicy, but not overdone. The highs are just open and airy.

In a decent preamp the separation of instruments is excellent, and i think the overdone construction of the tube lends it to be a very quiet tube. No self noise, which lends to the excellent detail retrieval. Black backrounds kinda stuff.

They sound awesome right out of the box, but after about 100 hrs or so they do marginally get a bit better.



They are the only tube i ever used that i never thought was missing anything. Its like i eliminated tube rolling. You must remember the subjectivity of sound, and opinions..yada yada yada... But i couldnt be happier.
 
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