Sunfire SDS12 12 Inch Dynamic Series Subwoofer - More bass from less space. The most powerful of the family the SDS-12 delivers all the dynamics found in your most demanding material. At home in larger rooms the SDS-12 delivers 600W of peak power from Sunfires Class-D digital amplification while sipping merely a half a watt in standby. Sunfires exclusive FFDTM technology is standard delivering the spectral balance required to reproduce the finest musical detail found in your favorite BluRay and DVDs as well as high fidelity music sources. Whether its chest-pounding special effects or delicate musical notes the DS12 delivers a true experience where others fall flat.