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Upgrade your car's sound system with the Rockford Fosgate 4 Channel Amplifier.
The energy-efficient amplifier is incredibly efficient, making it a great option for hybrid cars, electric vehicles, small cars, trucks, motorcycles, and side-by-side UTVs. This ultra-compact, 400-watt amplifier features Rockford Fosgate's proprietary Class-AD technology, including Constant Power. Constant Power produces the same output at 4-Ohm and 2-Ohm impedances. Constant Power also gives you 25 percent more output power because it balances demand vs. draw.
The 4-channel amplifier comes with flexible vehicle integration. The configurable input harness with Molex style connectivity accepts RCA and speaker level signals. Top-mounted controls give you easy access to the built-in crossover and C.L.E.A.N. input/output clip detection circuits and Rockford Fosgate's patented Punch EQ.
Don't worry about the amplifier overheating. The 3-stage thermal lock extrusion and dual fan forced inductions keep the amplifier cool, while the real-time thermal/protection schemes help safeguard the amplifier.
Install the Rockford Fosgate 4-Channel Amplifier to get the best performance from your car's speakers and sound system.
Compact 4-channel amplifier from Rockford Fosgate features 400 watts of power
Proprietary Constant Power amps deliver the same output at both 4-Ohm and 2-Ohm impedances
Flexible vehicle integration; versatile amplifier is compatible with hybrid, electric, small cars, trucks, motorcycles, and side-by-side UTVs
Includes low-level and high-level inputs with auto turn-on; 2/4 channel input switch
Dual fan-cooled amplifier has real-time thermal sensing protects the amplifier from overheating
Features C.L.E.A.N. input/output clip detection circuits and on-board punch EQ with +18 dB boost
Rated Power: 100 Watts x 4 at 4-Ohm; 100 Watts x 4 at 2 Ohm; 200 Watts x 2 at 4 Ohm Bridged
12dB/octave Butterworth crossover
Power wire gauge: 8 AWG
Speaker wire gauge: 16 AWG
Operating voltage: 9 to 16
Remote-Out feature for high-level inputs
Discrete surface mount technology
Color: Black
Dimensions (L x W x H): 11 x 3 x 6 inches
Weight: 3 pounds
Manufacturer warranty: 1-year warranty
Q: What is the Rockford Fosgate T400X4AD 4-Channel Vehicle Amplifier?
A: The T400X4AD is a 4-channel vehicle amplifier that delivers 400 watts of total power, designed to enhance the sound quality and performance of your car audio system.
Q: What makes the T400X4AD amplifier unique?
A: It features Class AD technology, offering the efficiency of Class D amplification with the sound quality of Class A, providing high output while reducing heat and power consumption.
Q: What audio setups is this amplifier ideal for?
A: The T400X4AD is perfect for powering 4-channel audio systems, offering clear, powerful sound for full-range speakers in your vehicle.
Q: How much power does the T400X4AD deliver?
A: The amplifier delivers 400 watts of total power, ensuring crisp and dynamic sound for your car’s audio setup.


















