High quality low noise pentode by Telefunken with bottom diamond mark. This tube is mainly used as a broadband amplifier. Good for microphone use. The design lifetime is 10,000 hours. Its cathode is resistant to standby operation. There is no internal shielding as in EF800, which makes the tube used to 30 MHz.
Quantity in Stock : 1 pcs
Price : US$ 249.00/each
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