Proper wiring is critical to prevent ground loops and alternator whine, which can easily ruin the ultra-low noise floor of the DEH-P01. Power and Grounding Rules
The DEH-P01 operates in a 4-way active network mode. You can adjust the High Pass Filter (HPF), Low Pass Filter (LPF), and Slope for each channel: pioneer deh-p01 manual
If you purchase a complete DEH-P01 package, it includes several critical components that differ from standard head units: Proper wiring is critical to prevent ground loops
: Users can switch between a spectrum analyzer, L/R level meters, or turn the display off entirely for a "stealth" look. Input Connectivity Low Pass Filter (LPF)