500 watts x 2 mono bridged @ 4 ohms; 125 watts x 4 @ 4 ohms; 250 watts x 4 @ 2 ohms; Switchable 12/6/0 dB bass boost; Red heat sink elements; SPEED-FET output devices to maximize power efficiency while improving sound quality and minimizing distortion; High-level inputs to integrate with OEM systems; Fully adjustable electronic crossovers; Low-voltage RCA inputs produce the highest sound quality without interference and minimal distortion in the signal path; Ability to daisy-chain multiple amps to eliminate additional signal cables from the source unit; LED system protection circuitry diagnostics; Includes owner’s manual;