Jensen XDA91RB Mono Amplifier vs Power Acoustik CA1-5000D Monoblock Amp

The Power Acoustik CA1-5000D delivers far more real power: 1,800 W RMS at 1 ohm and 1,000 W at 2 ohms, against the Jensen's 600 W and 400 W. The Jensen XDA91RB is the more flexible, easier-to-live-with amp, with Bluetooth app control, a 5-band EQ, speaker-level inputs and a smaller 4 lb footprint. Build and protection circuits are comparable at this tier, and owners of both report the usual Class D behavior: solid output, some heat under load. Pick the Power Acoustik for a big subwoofer build that needs current; pick the Jensen for a modest sub and tuning from your phone.

• Choose the Jensen XDA91RB if you run a single sub on stock electrical, want speaker-level input from a factory head unit, and want to tune gain, crossover and EQ from your phone over Bluetooth.
• Choose the Power Acoustik CA1-5000D if you have a 1-ohm-stable subwoofer and the wiring and charging to feed a genuine 1,800 W RMS.