Memphis Audio PRX500.4V2

The Memphis Audio PRX500.4V2 Power Reference is a compact four-channel amplifier for car audio speakers. RMS output is rated at 75 watts per channel into 4 ohms or 125 watts per channel into 2 ohms. Bridged operation is rated at 250 watts by two channels into 4 ohms.

Top-mounted controls sit beneath a removable panel. Features include variable crossovers, selectable turn-on, adjustable EQ boost and blue LED top and ground lighting. The aluminum heatsink measures 8.6 by 5.7 by 2.16 inches; Memphis recommends its 8GKIT wiring kit.

Confirm speaker impedance and the intended channel arrangement before installation. Leave room for cooling, cable connections and access to the top controls, and follow the specified bridged wiring instructions when using that configuration.