Resonant SMPS capable of delivering 2000W continuous and 2600W peak power. The stock available output voltages are adjustable within +-10% range. It uses zero-voltage switching half bridge resonant topology. The main advantage is lower size and cost compared with a similar regulated SMPS and better efficiency, up to 95% compared with the regulated SMPS's due to the fact that the transistors are soft-switched, and the current through the switches has sinusoidal shape, and there are no output inductors. The SMPS features overcurrent protection which limit the output current at about 130% of the maximum peak power, about 2600W. This SMPS can be used both at 230V AC Mains input voltage as well as 110V AC Mains supply voltage. It is suitable for both class AB and class D/T amplifiers. Target applications for this power supply unit include the TA3020 based amplifiers and IRS2092 amplifiers, as well as the LME49810 based amplifiers, which require supply voltage in range of +-40V to +-120V or multiple TDA892x or TA2022 amplifiers for the +-27V or +-31.5V version. The SMPS has an auxiliary differential output voltage of +-12V at max. 500mA, isolated from the main output voltage.