Power AmplifiersEven with the PA amplifiers are the same coexistence of analog and digital. The classical analog amplifier with toroidal transformer has served not quite. Often cheaper than the digital competition (switching power supply / PWM), they still offer solid performance and partly for a very small €. Conversely, those who want less drag, especially attacks on the PWM switching power supply or amp. In addition to the low weight of these amplifiers also score by some huge power outputs and auxiliary functions such as Network capacity or built-in digital controller.