Rockford Fosgate Power T400X4ad 4-Channel Amplifier

The T400X4ad 4-channel amplifier from Rockford Fosgate's Power Series is capable of delivering up to 100 watts RMS to four individual speakers. Alternatively, this compact powerhouse can also power a pair of subs at 200 watts each. Its sturdy build and dual-fan forced air cooling system prevent overheating, allowing for prolonged and powerful performance.

Class AD: accurate and powerful

Utilizing proprietary Class AD amplifier technology, Rockford Fosgate has combined the superior sound quality of a Class A system with the impressive efficiency of their unique Class D technology to present you with an extremely efficient and high-powered amplifier. In fact, this compact amplifier generates more power while requiring less current from your vehicle's charging system compared to the majority of other amplifiers currently available.

Rockford Fosgate's high-tech solutions yield more power

The Power Series amplifiers utilize Rockford Fosgate's Constant Power technology to actively monitor speaker performance. As a speaker's impedance tends to fluctuate during use, it can create resistance against the output of your amplifier. Similar to how cruise control adjusts the engine's RPM to maintain speed while going uphill, Constant Power increases the amp's internal voltage and current flow to compensate for the rise in speaker impedance. This results in a substantial boost of up to 25% in the overall power output of the amplifier.

Setting it up for optimum performance

Rockford Fosgate stands out once again with their innovative C.L.E.A.N. technology (Calibrated Level Eliminates Audible Noise). This system guarantees a clean and powerful sound for your music by utilizing setup tones downloaded from Rockford Fosgate. Simply adjust the receiver volume until the red clip light on the amp turns off, then increase the amp gain until a blue light appears. This easy process ensures perfect matching and maximum clean power from your amplifier to your receiver, resulting in less background noise and a clearer music experience.

Keeps an eye on things while playing

The LED will turn red if your music is distorting, indicating that you should lower the volume to avoid damage to your equipment. The optional PLC2 remote level control also acts as a clip indicator, allowing you to monitor for clipping from the driver's seat. The amplifier's internal computer constantly monitors the output current, protecting against plunging speaker impedances or short circuits during playback.