Power amplifier, High quality and good price!
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Switching power amplifier SA throws over the traditional big toroidal transformer, utilizing the PWM (Pulse Width Modulation) with advanced PFC (Power FactorCorrection) switching power supply, which ensures a resistive load for power supply of mains, minimizes current distortion and voltage/current excursion when the amp is in light load or full load. These result in a high output level performance and non-voltage collapse. SA leads the trend due to its advantages comparing to the conventional amplifiers: Higher efficiency, less heat dissipation and consequently more power, less power consumption, lighter weight and smaller size.