top of page

Rockford Fosgate Power T400-4
4-channel 400 WATT car amplifier


Rockford Fosgate's Power Series
Rockford Fosgate has a reputation for building high-quality mobile audio products. Their Power Series amps are top of the line, with fine-tuned audio controls, extreme durability, and proprietary technologies that deliver stronger, more reliable performance than most other amplifiers on the market today.

Dynamic Thermal Management
Rockford Fosgate has patented, award-winning "Dynamic Thermal Management," a 3-stage cooling system that uses forced air to dissipate heat evenly across the amp and out through the large heatsinks. This results in cooler internal components, higher efficiency, and lower distortion.

MEHSA cooling process
MEHSA is a Rockford Fosgate proprietary process that increases the heat transfer from the MOSFET devices to the heatsink. This allows the heat to escape more efficiently from the amp, so that the transistors stay cooler.

Quiet inputs
"Differential Input" circuitry helps eliminate any electronically induced noise or hum that could be detected by the input cables, allowing only clean signals to enter the amplifier. You get more music with less heat and noise in a stylish package that's up to 40% smaller than previous models.

T400-4 Power performance
The T400-4 amplifier puts out 60 watts RMS into each of its 4 channels — more than enough to drive your front and rear speakers to their best output. Or you can bridge your T400-4 to pump 200 watts each to a pair of subwoofers. One way or another, you can depend on clean, powerful sound from your Power Series amp.


  • 4-channel car amplifier
  • CEA-2006 compliant
  • Dynamic Thermal Management cooling system
  • Differential Input circuitry eliminates hum
  • 60 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
  • 200 watts RMS x 2 bridged output at 4 ohms (2-ohm stable in bridged mode)
  • variable high- and low-pass filters (50-500 Hz, 24 dB/octave)
  • variable bass/treble boost (0-18 dB at 45 Hz, 0-12 dB at 12k Hz)
  • optional remote bass/treble boost (available soon)
  • Class-AB amplifier design
  • MOSFET power and output stages
  • preamp inputs
  • 4-gauge power and ground leads and a 100-amp fuse recommended — wiring and hardware not included with amplifier
  • no on-board fuses — when installing multiple amps in a system, an additional 100-amp in-line fuse between the distribution block and the amplifier is recommended
  • 13-5/8"W x 2-1/4"H x 9-5/8"D


SKU: 224568566665
    bottom of page