The Rockford Fosgate T400-4 4-Channel Amplifier is a compact and powerful audio component designed for use in car audio systems. With an RMS power output of 400W and an impedance of 4 Ohm, this amplifier delivers crisp and clear sound through its four channels. Made in the United States, this black amplifier from the Power Series by Rockford Fosgate is perfect for enhancing your vehicle's audio experience. Its wired connectivity ensures a secure and reliable setup, making it a great choice for car audio enthusiasts looking to upgrade their sound system.