A switching amplifying method or a switching amplifier for obtaining one or more than one linearly amplified replicas of an input signal, is highly efficient, and does not have the disadvantage of “dead time” problem related to the class D amplifiers. Said switching amplifying method comprises the steps of: receiving the input signal; pulse modulating the input signal for generating a pulse modulated signal; switching at least one pulsed current flowing to a first input terminal of a filter according to the pulse modulated signal when the polarity of the input signal is positive; switching at least one pulsed current flowing from the first input terminal of the filter according to the pulse modulated signal when the polarity of the input signal is negative; filtering all said pulsed currents flowing through the first input terminal for getting an output signal.