This Alpine MRV-F250 Class A/B 4 Channel Power Amplifier is a top-of-the-line audio device that provides high-quality sound output. With its brand name and country of manufacture in Japan, you can be assured of its durability and reliability. This amplifier has 4 channels and is designed to provide a powerful sound experience for your car audio needs. It is a great addition to any car audio system and is sure to enhance your listening experience.