BUY STK621-728 https://www.utsource.net/itm/p/1865557.html

Description: STK621-728 is a SIP-ZIP (Single In-line Package-ZIP) module manufactured by SANYO. It is a power amplifier module designed for use in audio systems. Features: High power output of up to 2 x 50W Low distortion of 0.01% THD Low noise level of -90dB High efficiency of up to 90% Low power consumption Compact size Applications: STK621-728 is suitable for use in audio systems such as car audio, home audio, and professional audio systems. It can also be used in other applications such as industrial equipment, medical equipment, and consumer electronics. (For reference only)