A switching mode power amplifier device for delivering power to a load, the switching mode power amplifier device comprising: a first pair of semiconductor switches, including first and second semiconductor switches (S1, S2) each configured to receive at its control electrode, a respective positive and negative component of a modulated analog input signal, wherein a switching rate of the first and second semiconductor switches equals or exceeds a carrier frequency used to modulate the analog input signal; first and second transformers (T1, T2) each having a primary winding comprising a first and second input terminals (1, 2) and a secondary winding (par. 25) comprising a first and second output terminals (3, 5), wherein the first and second transformers (T1, T2) are respectively connected with their first input terminals to the first and second semiconductor switches (S1, S2), and in reverse polarity with respect to each other; a second pair of semiconductor switches, including third and fourth semiconductor switches (S3, S4) having opposite switching states, wherein the third and fourth semiconductor switches are electrically connected between a respective one of the first and second transformers (T1, T2) and the load, and are operable for receiving released energy from the respective first or second transformer, wherein a switching state of the third and fourth semiconductor switches (S3, S4) changes in response to a detected zero voltage crossing of the analog input signal, and wherein a closed/conducting switching state of the third and fourth semiconductor switches (S3, S4) transfers the released energy to the load to thereby isolate the load from a switching function of the first pair of semiconductor switches (S1, S2); a first diode positioned in series between the first transformer and a collector of the third semiconductor switch, and having an anode end connected to the first output terminal of the first transformer and a cathode end connected to the third semiconductor switch; a second diode positioned in series between the second transformer and an emitter of the fourth semiconductor switch, and having an cathode end connected to the second output terminal of the second transformer and an anode end connected to the fourth semiconductor switch; and a zero crossing detection circuit in communication with the second pair of switches (S3, S4), the zero crossing detection circuit being configurable to detect the zero voltage crossing of the analog input signal and to activate a designated one of the third or fourth semiconductor switches (S3 or S4) and to simultaneously deactivate the other of the third or fourth semiconductor switches, with the identity of the activated switch changing with the detection of each successive zero-crossing point. a first pair of semiconductor switches, including first and second semiconductor switches (S1, S2) each configured to receive at its control electrode, a respective positive and negative component of a modulated analog input signal, wherein a switching rate of the first and second semiconductor switches equals or exceeds a carrier frequency used to modulate the analog input signal; first and second transformers (T1, T2) each having a primary winding comprising a first and second input terminals (1, 2) and a secondary winding (par. 25) comprising a first and second output terminals (3, 5), wherein the first and second transformers (T1, T2) are respectively connected with their first input terminals to the first and second semiconductor switches (S1, S2), and in reverse polarity with respect to each other; a second pair of semiconductor switches, including third and fourth semiconductor switches (S3, S4) having opposite switching states, wherein the third and fourth semiconductor switches are electrically connected between a respective one of the first and second transformers (T1, T2) and the load, and are operable for receiving released energy from the respective first or second transformer, wherein a switching state of the third and fourth semiconductor switches (S3, S4) changes in response to a detected zero voltage crossing of the analog input signal, and wherein a closed/conducting switching state of the third and fourth semiconductor switches (S3, S4) transfers the released energy to the load to thereby isolate the load from a switching function of the first pair of semiconductor switches (S1, S2); a first diode positioned in series between the first transformer and a collector of the third semiconductor switch, and having an anode end connected to the first output terminal of the first transformer and a cathode end connected to the third semiconductor switch; a second diode positioned in series between the second transformer and an emitter of the fourth semiconductor switch, and having an cathode end connected to the second output terminal of the second transformer and an anode end connected to the fourth semiconductor switch; and a zero crossing detection circuit in communication with the second pair of switches (S3, S4), the zero crossing detection circuit being configurable to detect the zero voltage crossing of the analog input signal and to activate a designated one of the third or fourth semiconductor switches (S3 or S4) and to simultaneously deactivate the other of the third or fourth semiconductor switches, with the identity of the activated switch changing with the detection of each successive zero-crossing point.