ITEM NAME:Replacement 2-Channel Car High To Low Impedance Converter Adapter Speaker To RCA Description: Easy to install. Converts High Level to Low Level. Speaker Line input to RCA output. Adjustable level matching from 0 to 2 volts. For car stereos up to 80 watts. Specification: Product Name: Impedance Converter Adapter Material: Plastic+ Electronic Components Control Size: Approx. 85*40*20mm Cable Length: Approx 155mm Package Includes: 1 Piece Impedance Converter Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making.1 Piece Impedance Converter. Speaker Line input to RCA output. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Converts High Level to Low Level.