BUY STK407-040 https://www.utsource.net/itm/p/969199.html
SANYO IC
Description: STK407-040 is a hybrid IC (Integrated Circuit) manufactured by Sanyo. It is a power amplifier module for audio and general purpose applications. The module consists of two power amplifier ICs, a pre-driver IC and a protection circuit IC. Features: High output power of 2 x 40W (8Ω) Wide operating voltage range of 4.5V to 16V Low distortion Built-in protection circuit Low noise High efficiency Applications: STK407-040 is suitable for use in audio amplifiers, car audio systems, portable audio systems, and other general purpose applications. (For reference only)