Triad offered such a reasonably priced and unique solution to the problem of integrating surround sound into a home theater environment. The OnWall Bronze Surround was designed to provide an enveloping surround field when used with better A/V receivers in moderately sized rooms, with both analog and digital sources. While the default configuration is bipole, you can specify your Bronze Surrounds as dipoles if you wish, as they are built-to-order in America.