Power Series 4-Channel Class A/D Car Amplifier RMS Power Rating: 4 ohms: 250 watts x 4 chan. 2 ohms: 250 watts x 4 chan. 1 ohm: 250 watts x 4 chan. Bridged, 4 ohms: 500 watts x 2 chan. Bridged, 2 ohms: 500 watts x 2 chan. Dynamic Power Rating: 4 ohms: 290 watts x 4 chan. 2 ohms: 290 watts x 4 chan. 1 ohm: 290 watts x 4 chan. Class AD technology allows the amplifier to produce more power with less current draw Constant Power delivers maximum power output regardless of varying impedance loads Discrete surface mount circuits decrease cross-talk, lowers temperatures and improves efficiency Dynamic thermal management (DTM) evenly distributes excess heat across the entire amplifier 3rd Generation MESHA technology reduces MOSFET temperatures and increases durability while lowering distortion NOMAD real time computer protects this amplifier from shorting wires and low speaker impedances Remote bass level input (remote level control sold separately) LED power (blue), thermal (red) a