Integrated: All-in-One devices that combine a preamplifier and power amplifier in the same unit. You connect the microphone and send the sound directly to passive speakers.
Preamplifier: It amplifies the microphone’s very low signal to line level, giving it the necessary volume, “color,” and clarity before it is sent for recording or mixing.
Power Amplifier: Pure power amplifiers that take the ready-made signal and provide the watts needed to drive large passive speakers (usually in PA installations or stores).
Tube: Uses internal vacuum tubes (valves) to amplify the sound, offering a very “warm,” rich, and vintage character that professionals in studios love.
Radio: It has a built-in FM/AM tuner, a practical convenience mainly for integrated amplifiers placed in cafes or stores for background music.
Phantom Power: Provides the necessary electrical power (usually 48V) through the cable, which is required for studio condenser microphones to operate.