ITEM NAME:2-RCA Stereo Convert High to Low VF Level Line Speaker Converter with Cable Description: - Ordinary high to low converter will lose some audio signal. But with this built-in delay converter, it can get rid of noise from the speaker, but with no signal missing and less impact on expander and subwoofer. - Easy to install. Converts High Level to Low Level. - Converts car stereo speaker outputs to RCA outputs. - Allows the addition of 2 or 4 channel amplifiers to most stereos without RCA output. - Allows the addition of amplifier and subwoofer to existing factory system. Specification: - Material: Plastic+ Electronic Components - Control Size: Approx. 85*40*20mm - Cable Length: Approx 155mm - Adjustable level matching from 0 to 2 volts. - For car stereo up to 80 watts. Package Included: 1 Piece Car Stereo Speaker Level Converter 1 Piece Cable 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.But with this built-in delay converter, it can get rid of noise from the speaker, but with no signal missing and less impact on expander and subwoofer. - Allows the addition of amplifier and subwoofer to existing factory system.