Do you Know a Trusted Seller of Chinese Vacuum Tubes?


With the terrible Russian offensive/war and the drying up of NOS tubes, I ventured more deeply into Chinese tubes.  

Does anyone have a recommended seller who might actually test for noise/microphonics?  I wish Kevin Deal's outfit would start carrying some of the premium offerings.  I'm surprised he doesn't given (I think) Primaluna branded tubes are likely Chinese (Shuguang, maybe?).  

Some of the Chinese preamp tubes I've tried sound glorious. Getting them without noise can be a challenge. 

 

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I had a Shuguang KT-88T Nature series blow and take out a power supply. The tube had just gotten broken in. Sure, I suppose it can happen with any tube. But the Nature series was a top tier tube. I've had tubes blow before but never take out a power supply. I have little or no confidence in Chinese tubes now

Why are JJ tubes a problem? Is the manufacturing process really subpar? Does anyone really know anything about JJ manufacturing