Down4Sound HiLoc7i – 7 Channel High-Level to RCA Line Output Converter

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

• 7 RCA Output Channels
• 6 High-Level (Speaker) Inputs + 1 Low-Level RCA Input
• High-to-Low Level Signal Converter
• Built-in OEM Signal Sensing (Automatic Turn-On)
• Clipping Indicators on Each Channel
• Strong 9V RMS Output Signal
• Wide Frequency Response: 10Hz – 50kHz
• Low Distortion: THD <0.01%
• High Signal-to-Noise Ratio: ≥100dB
• Input Impedance: 20Ω
• Remote 12V Output (signal sensing)
• Fuse Rating: 3A
• Compact Size: 7.09 × 5.9 × 1.5 in (180 × 150 × 38 mm)