300B high end hifi Vacuum tubes with special shape and ceramic base and chrome plating golden pins.The special blue glass tube is sensitive for signal and has low noises output.
The 300B is known around the world for its sound quality and powerful performance in both single-ended & push-pull amplifiers.
The 300B is a directly-heated filamentary type power triode vacuum tube with a four-pin base,which designed for use as an audio-frequency power amplifier.
The 300B has good linearity, low noise and good reliability,it is often used in single-ended triode (SET) audio amplifiers of about eight watts output.A push-pull pair 300B can output 20 watts.The anode can dissipate 40 watts thermal.
This tube is used sapphire crystal as a bulb, which not only brings visual art enjoyment to people, but also has the function of shielding electronic clutter and uniform electron escape.
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