3CX10,000A7

The Penta Laboratories 3CX10,000A7 amplifier tube for sale is a ceramic and metal power triode intended to be used as a zero-bias Class-B amplifier in audio or radio-frequency applications. Operation with zero grid bias offers circuit simplicity by eliminating the bias supply. In addition, grounded-grid operation is attractive since a power gain as high as twenty times can be obtained with the PL8160/3CX10,000A7.