300B high end hifi Vacuum tubes with special shape and chrome plating base and nickel feet
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.