Fully functional. Comes with aftermarket speakers wire harness/plug. The Stinger SPX1000X5 Micro Amplifier is a powerful 1000W 5-channel amplifier designed for Powersports, Marine, Boat, RV, and Car audio systems. Made by the trusted brand Stinger, this amplifier delivers high-quality audio performance with its RMS power output. With its compact design and origin from China, this amplifier provides a versatile and reliable option for enhancing your vehicle's audio experience.