Worked fine when pulled from car. Missing the crossover that comes with it and back screws. The Old School Kicker ZR120 2 channel Amplifier is a powerful and reliable audio component from the well-known brand KICKER. With RMS power output of 180W and the ability to handle 1 ohm stable and 2 ohm bridgable impedance, this amplifier is perfect for driving your audio system with clean and clear sound. The 2 channel design allows for versatile use, whether you prefer a stereo or mono setup. The ZR120 model is known for its durability and high performance, making it a great choice for any car audio enthusiast looking for a dependable amplifier for their sound system.