Use the Low-level (RCA) inputs for the best audio performance. If your factory head unit lacks RCA outputs, high-level speaker wire inputs can be used. Safety & Maintenance Tips owner's manual - Jensen Mobile
While official modern documentation is limited, historical data and expert overviews highlight the following specifications: Rated at 100W x 2 channels (Max). Jensen A220 Amp Manual
Stable down to 2 ohms in stereo mode ; however, a minimum of 4 ohms is recommended when bridged to prevent damage. Use the Low-level (RCA) inputs for the best
Capable of outputting 250 Watts into a 4-ohm load. Jensen A220 Amp Manual
Utilizes MOSFET technology for efficient power delivery. Installation & Wiring Guide