A modular power amplifier system (100, 200, 300, 400) for receiving an input signal and providing output signals with scalable output power, wherein the modular power amplifier system (100, 200, 300, 400) comprises: a plurality of amplifier modules (111, 121, 131, 132, 1i1), each amplifier module comprises an input port (In) and an output port (Out), and wherein the plurality of amplifier modules are arranged into a number of sections comprising: a first section which is constituted of a first amplifier module, among the plurality of amplifier modules, configured to amplify the input signal within a first amplitude range and provide a first output signal having a first maximum output power; a second section which is constituted of a second amplifier module, among the plurality of amplifier modules, configured to amplify the input signal within a second amplitude range higher than the first amplitude range of the first section and provide a second output signal having a second maximum output power; and an i-th section which comprises multiple amplifier modules (1i1), among the plurality of amplifier modules, wherein i is an integer greater than 2, each amplifier module of the multiple amplifier modules of the i-th section being configured to amplify the input signal within an i-th amplitude range higher than an (i-1)-th amplitude range of an (i-1)-th section and provide an i-th output signal having a an i-th maximum output power (Pi), and wherein the modular power amplifier system is configured to combine the first output signal of the first amplifier module with the second output signal of the second amplifier module, thereby generating a second combined output signal at the output port of the second amplifier module of the second section and wherein the modular power amplifier system is further configured to split an (i-1)-th combined output signal at the output port of each amplifier module in the (i-1)-th section thereby generating for each amplifier module in the (i-1)-th section an equal number of split output signals, wherein a total number of split output signals of the (i-1)-th section equals a number of amplifier modules in the i-th section and further configured to combine each split output signal of the (i-1)-th section with a respective i-th output signal of a respective amplifier module of the multiple amplifier modules of the i-th section thereby generating an i-th combined output signal at the output port of each amplifier module of the i-th section. a first section which is constituted of a first amplifier module, among the plurality of amplifier modules, configured to amplify the input signal within a first amplitude range and provide a first output signal having a first maximum output power; a second section which is constituted of a second amplifier module, among the plurality of amplifier modules, configured to amplify the input signal within a second amplitude range higher than the first amplitude range of the first section and provide a second output signal having a second maximum output power; and an i-th section which comprises multiple amplifier modules (1i1), among the plurality of amplifier modules, wherein i is an integer greater than 2, each amplifier module of the multiple amplifier modules of the i-th section being configured to amplify the input signal within an i-th amplitude range higher than an (i-1)-th amplitude range of an (i-1)-th section and provide an i-th output signal having a an i-th maximum output power (Pi), and wherein the modular power amplifier system is configured to combine the first output signal of the first amplifier module with the second output signal of the second amplifier module, thereby generating a second combined output signal at the output port of the second amplifier module of the second section and wherein the modular power amplifier system is further configured to split an (i-1)-th combined output signal at the output port of each amplifier module in the (i-1)-th section thereby generating for each amplifier module in the (i-1)-th section an equal number of split output signals, wherein a total number of split output signals of the (i-1)-th section equals a number of amplifier modules in the i-th section and further configured to combine each split output signal of the (i-1)-th section with a respective i-th output signal of a respective amplifier module of the multiple amplifier modules of the i-th section thereby generating an i-th combined output signal at the output port of each amplifier module of the i-th section.