The BOSE's POWERMATCH PM4500N programmable professional power amplifier delivers concert-quality sound with a high level of scalability and configurability. Network configuration, control, and monitoring are all possible with Ethernet-equipped models, and an expansion slot accepts input from optional digital audio accessory cards. PowerMatch amplifiers combine a variety of Bose technologies to provide an unrivalled mix of performance, efficiency, and ease of installation—all in a dependable, unique design. The PM4500N USB connection provides single-unit setup and control using Bose ControlSpace Designer software.