Power/Speaker Cable for MS-RA670 & MS-RA770 Stereo (A Port)Features:. Compatible with MS-RA670 and MS-RA770 Stereos. FUSION's power/speaker cable for installation. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.