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Shuguang Treasure series 300B-Z

Shuguang Treasure series 300B-Z

Chinese Shuguang Treasure 300B-Z New Version.
The carbon-sprayed black glass treasure series has better product stability, matching accuracy and sound quality than ordinary products.
300B is directly-heated type cathode triode, used as class A1. In audio amplifier it suits for the condition that the output power is 10W.