The BOSE's POWERMATCH PM4250N programmable professional power amplifier delivers concert-quality sound. The PM4250N has several channel and power options, as well as an integrated audio DSP, a front panel interface, and a USB port. Ethernet equipped versions support network configuration, control, and monitoring; an expansion slot supports inputs from optional digital 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 PM4250N adds Ethernet connectivity for network control and monitoring of multiple “N” version amplifiers.