The BOSS Audio R1100M Riot 1100 Watts Series Car Audio Subwoofer Amplifier is a powerful mono amplifier designed for car audio systems. With an RMS power output of 1100W, this amplifier delivers clear and impactful sound for an immersive listening experience. Made by BOSS Audio in China, this product is known for its quality and reliability in the world of vehicle electronics. The R1100M is a popular choice for car audio enthusiasts looking to enhance their sound system with a high-performance amplifier.