can we talk? I have been producing 833 tube amp in China for more than 20 years, and also special order 833 amp with sterling silver transformer, I came back to live in Mexico 3 years ago, and after 3 years of research and experimentation, I produce the ultimate, hi end cartridge!
AudioCirc.com 
Hi, this is the least way to evaluate a vacuum tube : you’ll never know exacty the health , just an average GOOD or BAD value ….
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Hello ！
can we talk? I have been producing 833 tube amp in China for more than 20 years, and also special order 833 amp with sterling silver transformer, I came back to live in Mexico 3 years ago, and after 3 years of research and experimentation, I produce the ultimate, hi end cartridge!
best regards
Fang
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Thanks Fang
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