The NEW Memphis Audio MM900.6V MM-Series Class-D 6-Channel Marine Amplifier is a powerful and high-quality car audio amplifier designed specifically for marine environments. With a RMS power output of 680W and 6 channels, this amplifier is capable of delivering clear and crisp sound for your marine audio system. The Memphis brand is known for its reliable and durable products, making this amplifier a great choice for enhancing your boating or other marine audio experience.