Features 1 This adapter means that you can draw the RCAfrom the speaker cable at the back of your CD player for connecting to the power amplifier etc 2 For a host machine with no low frequency RCA output convert the horn output from high frequency to low frequency RCA output 3 Used to connect automobile power amplifier also in the subwoofer signal input 4 Dual high level input output stereo conduction level output fine tuning Unit Functions 12 Volts Black wire ground CD case Two color line to the left & right of the negative The monochrome line is connected to the left & right Specification Item Weight Appr 40g The length of the product 6 inches Material ABSVoltage 12 Volts Origin China Package Included 1 XRCA Harness Cables