This Pioneer Class D Mono Amplifier (model GM-D7500M) is a powerful option for enhancing your car audio system. With an RMS power of 800W, this amplifier is capable of producing high-quality sound for all your favorite tunes. The amplifier has been modified with BP technology to ensure maximum efficiency and performance. It is a used item made in China, and it is in great working condition. The amplifier is compatible with a variety of vehicles and is easy to install. The brand Pioneer is known for producing high-quality audio equipment, making this amplifier a great investment for any car audio enthusiast.