Complete integration of aftermarket audio components into Vehicle OEM system. Sums and balances multiple signals from Factory Stereo, sums up to four Speaker-level stereo pairs down to single stereo RCA low-level output.

• Built in AUX input for connection to Portable Audio devices and four line-level stereo RCA outputs connect to Amplifier
• Balance levels from multiple speaker-level sources
• Sums and balances multiple signals from Factory Stereo, sums up to four Speaker-level stereo pairs down to single stereo RCA low-level output.