The TDA7851L with Audio Amplifiers 4x50 W MOSFET Quad Bridge Pwr Amplifier is a powerful four-channel power amplifier designed and manufactured by STMicroelectronics. Featuring an advanced power MOSFET technology, the TDA7851L offers excellent sound quality and delivers high output power (rated at 4 x 50 Watts into a 4 ohm load and 4 x 30 Watts into a 2 ohm load) with very low distortion. It also has excellent noise and interference immunity. The TDA7851L is suitable for automotive, HiFi, home theater, and professional audio applications. It includes an on-board mute function, requiring only a few external components. The device also features low standby current, selectable low-noise and distortion audio mode, and a thermal shutdown circuit.