BUY STA540 https://www.utsource.net/itm/p/5209050.html
4 x 13 W dual/quad power amplifier
The STA540 is a four-channel audio power amplifier IC manufactured by STMicroelectronics. It is a monolithic integrated circuit with four independent audio power amplifiers in a single package. It is designed to deliver up to 4 x 15 watts of continuous average power to a 4Ω load with 0.1% THD+N from a 14.4V supply. Features: 4 x 15W continuous average output power into 4Ω load with 0.1% THD+N from 14.4V supply Low quiescent current Short circuit protection Thermal protection Over-voltage protection High efficiency Low external component count Low noise Applications: Portable audio systems Car audio systems Home audio systems Professional audio systems (For reference only)