Two into one equals 5.1. The MRA-D550 has the two-in-one convenience of a high-power, high-quallity amplifier combined with a multi-channel sound processor, and gives you an advanced, easy-to-install 5.1-channel surround sound system. Since the 5.1-channel surround decoding and processing are built-in, all you need is a DVD player and speakers. Then, just sit back and enjoy the experience.
