The 700AS1 sets a new industry benchmark in audio performance, efficiency, and power density, made possible by adapting the very latest ICEpower technological advances. Its mini size foot print, 1 x 700W, and fanless design creates limitless possibilities for a large active subwoofer that you'll hear and feel. With the optional wiring harness bundle, sold separately, create bass amplifiers, subwoofers, stereo home automation and hi-fi amplifiers as well as industrial applications. Add a Bluetooth receiver board (sold separately) for wireless audio projects. The rugged construction keeps the music playing for years even when moving from place-to-place. There are endless possibilities using this compact, combination power supply 1 x 700W amp board for your next audio project.