High efficiency and high fidelityanalogue/digital switching mixed mode amplifier
Nam-Sung Jung, Jae Hoon Jeong, G.H. Cho · Electronics Letters · 1998
An audio amplifier which combines the advantages of analogue and digital amplifiers is proposed. The high fidelity of an analogue amplifier and high efficiency of a digital amplifier are simultaneously achieved in one system. Experimental results show that the proposed amplifier has 0.005% total harmonic distortion and 90% power efficiency at output = 50 W.