The Down4Sound HiLoc7i 7-Channel Line Output Converter is the easiest way to add aftermarket amplifiers and subwoofers to your factory stereo. Engineered for clean integration, the HiLoc7i accepts your OEM high-level (speaker) signals and delivers strong 9V RMS RCA outputs, ensuring your amps get the signal they need for full performance.
With 6 speaker-level inputs + 1 RCA input and 7 RCA outputs, the HiLoc7i gives you the flexibility to expand into multi-amp and subwoofer setups. Built-in OEM signal sensing provides automatic turn-on, while clipping indicators on each channel make tuning safer and easier.
This converter is built for clean sound with THD <0.01% distortion, a 100dB signal-to-noise ratio, and a wide 10Hz–50kHz frequency response — meaning every detail of your music passes through. Compact, installer-friendly, and powerful, the HiLoc7i is the perfect solution for upgrading your factory sound system without replacing your head unit.
If you’ve been asking “How do I add an amp to a factory radio?” — this is the answer.
Key Features
