CHINESE tubes?

One has to be careful with broad brush statements when their are so many variables at play. I use a mix of NOS & Chinese tubes in my systems with excellent success. The NOS 845's & 300B's were just a little too expensive for my budget. I used the Shuguang ,Nature series & 300B Treasure Series in my Cary 211 amps & I am very happy with the sound as well as the reliability. I had the 300B's cryo treated which kicked their performance up another notch.

That is a totally inaccurate statement. Vac , and many others have been using 
dependable matched tubes for years Shugaung has been making tubes since 1958. They have had old RCA and Tungsol original machines in there from way back and have made new machines similar.  Their El34, Kt88 Kt120 
power tubes all very dependable . And small signal tubes a lot direct American copies .Old 60s50s tubes tubes better for various reasons mainly 
a bit better materials and  much closer inspection per 100, hoot 1,000s
if you want top tubes the a Black treasures are very good quality and highly musical.  They are a bit $$ pricy  but are superior for power tubes no Russion tube is better.  And if you buy from them on eBay you get a full 12 month warranty . You will not top that.

Mofi,  If you're not going to use those NOS tubes, why don't you put them up for sale at a good price and give some of the tube newbies a chance to compare them with the Chinese tubes.

There is no way that I will buy an Ongako and plug in Chinese 211

We used to use the Russian 6SN7s. They really didn't perform well and were unreliable. About 1998 or so we switched to Chinese 6SN7s and they have been treating us quite well. They are not the best sounding 6SN7, but they are not bad. They are copies of the JAN Phillips 6SN7 and not surprisingly sound about the same.

I find that the Russian power tubes on the other hand work pretty well. The Chinese power tubes don't seem to do so well.

We use Chinese 12AT7s in our phono sections since its hard to find 12AT7s that are quiet and non-microphonic- terrible luck in that regard with the Russian tubes! But a box of 100 of the Chinese tubes will have only about 10 rejects, which is better than the about 90% reject of the Russian variety! Most of the NOS tubes these days are too noisy.

So my impression is that the Chinese do pretty good on the small signal tubes and not so good with the power tubes.