According to different types of power amplifier tubes, power amplifiers can be divided into tube amplifiers and transistor amplifiers. As early as the 1960s, tube amplifiers have become popular all over the world, but from the 1960s to the 1980s, transistor amplifiers began to gradually rise. By the 1980s, the number of tube amplifiers was very small, and now, the status of tube amplifiers...

Class A power amplifiers are Class A power amplifiers. Two or two sets of output tubes in the output stage of this amplifier are always in a conductive state, and they maintain a conducting current state with or without signal input. This power amplifier has the best linearity, and each output tube amplifies the full wave of the signal, and there is basically no...

What does the post amplifier mean? Back-stage power amplifier, commonly known as pure back-stage, is simply a device that amplifies the "front-stage" audio signal to provide sufficient power to drive the speaker sound (always connected in front of the speaker). So what is the "preamp" mentioned here? It is a device that provides appropriate audio level signals and adjusts the sound quality (commonly known...