Hifonics Titan TXI4008 400 Watt A/B Class Two-Channel Amplifier 2 x 100 W @ 4 Ohms, 2 x 200 W @ 2 Ohms, 1 x 400 W @ 4 Ohms Twin-turbo MOSFET exponential vari-power supply high-current power supplies and hardened high-speed MOSFET outputs Soft-start amp turn-on thump prevention Daisy-chaining RCA line-outs for multiple amplifier systems and rugged 0 to 4-gauge power connectors