1) 5AV8 is a small preamp tube used for audio amplifiers. It has two metallic plates, two grids, and two filaments.
2) The tube contains a dual triode design with a 9-pin base, which allows it to fit into most audio amplifiers.
3) The 5AV8 is a low gain amplifier with a low noise and low Microphone-level input.
4) It has a plate voltage of 270 volts and a plate current of 0.7 milliamps (mA).
5) It is generally used for low-level pre-amplification applications, such as microphone preamplifiers, guitar preamplifiers, and mixing consoles.