Jensen A220 Amp Manual Here

Stable down to 2 ohms in stereo mode ; however, a minimum of 4 ohms is recommended when bridged to prevent damage.

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. Jensen A220 Amp Manual

Following standard Jensen amplifier protocols is essential for safe operation: Stable down to 2 ohms in stereo mode

Utilizes MOSFET technology for efficient power delivery. Installation & Wiring Guide Jensen A220 Amp Manual

Attach the ground wire to a clean, unpainted section of the vehicle's chassis. Keep this wire as short as possible—ideally under 36 inches.