Boosts the voltage level of the signal received from the input stage before it reaches the power-hungry output transistors.
An asymmetrical balanced input stage that handles the initial audio signal, often using a differential pair to ensure high clarity and minimal distortion. 1000 Watts Power Amplifier Diagram
Because these circuits generate significant heat, large aluminum heatsinks and cooling fans are mandatory to prevent component failure. 1000 Watt Powerful Amplifier Circuit - Facebook Boosts the voltage level of the signal received
(PNP), which are popular in 1000W designs due to their high power handling. 1000 Watts Power Amplifier Diagram