Overview: Converts car stereo speaker outputs to RCA outputs Allows the addition of 2 or 4 channel amplifiers to most stereos without RCA putputs Allows the addition of amplifier & subwoofer to existing factory systems Adjustable level matching from 0 to 2 volts For car stereos up to 80w Easy to follow illustrated instructions. Specification: Weight Approx:98.6g Size Approx:9 x 4.5 x 2.5