Compatible for Echo Studio, Echo Sub,Polk Audio Signa S2,MagniFi One Subwoofer,Omni S6,Sony SRS-XP700 SRS-ZR5 SRS-X99,Klipsch SW-350 SW-450 Figure 8 connector C7 power cable, rated to carry: 10A,7A 125V; 2-prong NEMA 5-15P male plug to female IEC-320 C7 connector Replace your overused, old, broken, damaged, or misplaced power cable or add extra distance / extension between devices for convenience. Cable Length 5.9FT(1.8M) speaker power cord 2 prong power supply Compatible for Echo Studio, Echo Sub,Polk Audio Signa S2,MagniFi One Subwoofer,Omni S6,Sony SRS-XP700 SRS-ZR5 SRS-X99,Klipsch SW-350 SW-450