Connect directly to the positive battery terminal. A fuse must be installed on this wire within 18 inches of the battery to protect the vehicle's electrical system.
Capable of outputting 250 Watts into a 4-ohm load. Jensen A220 Amp Manual
While official modern documentation is limited, historical data and expert overviews highlight the following specifications: Rated at 100W x 2 channels (Max). Connect directly to the positive battery terminal