Reference 621

The reference version of its sibling, the Reference 621 can be used for high-fidelity 2-channel stereo systems and home theater systems alike. As a stereo pair, the 621 is sure to please listeners with a musical experience as the recording artist originally intended. For home theater, the 621's dual 6½‑inch reference aluminum cone woofers and AMT tweeter deliver crystal-clear dialog and vibrant sound effects with superb clarity and acoustic performance. These reference drivers provide extended frequency response, greater power handling and improved dynamic range. The 621 is versatile enough that it can be used for nearly any main or effect channel in a multi-channel surround sound system.