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Rockford Fosgate T400-4 Power 400 Watt 4-Channel Amplifier

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SKU: T4004
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Perfect for Front/Rear Fading Stereo Systems


The Power T400-4 is a 4-channel amplifier capable of producing 100 Watts into each of its four channels at 2-Ohms. The T400-4 can run a 4-way full-range system or use component speakers on the front with subwoofers on the rear.

The T400-4 amplifier is perfect for front/rear fading stereo systems or when dedicated amplification is required between front stage speakers and rear subwoofer(s). Thanks to the Dynamic Thermal Management, the small chassis design insures it can be installed in any location – like under front seats.


  • 24dB/octave crossover
  • 2/4 channel input switch
  • MOSFET power supply
  • MOSFET output stage
  • 4 Gauge power/ground connectors
  • Audiophile grade speaker connections


  • CEA-2006 Compliant
  • Number of Channels 4
  • Total Power (Sum of Rated Power) 400 Watts RMS
  • Rated Power (RMS Continuous Power) 60 Watts x 4 @ 4-Ohm, 100 Watts x 4 @ 2-Ohm, 200 Watts x 2 @ 4-Ohm Bridged, 2-Ohm x 2 Bridged Stable
  • Dynamic Power (PVC/PowerCube®) 84 Watts x 4 @ 4-Ohm 0° Res, 139 Watts x 4 @ 2-Ohm 0° Res, 272 Watts x 2 @ 4-Ohm Bridged
  • Bridgeable Yes
  • Frequency Response 20Hz to 20kHz +/- 1dB
  • Input Sensitivity 150 mV to 4 V
  • Circuit Topology Class Class A/B
  • Efficiency (average) 69% @ 4-Ohm, 68% @ 2-Ohm
  • Total Harmonic Distortion (THD+Noise) 4-Ohm: <1.0%, 2-Ohm: <1.0%
  • Signal Input Front Low level: 1 RCA pair, Rear Low level: 1 RCA pair, Input Switch: 2CH / 4CH
  • Tone Controls Front Channels – Punch EQ, Treble: 0dB to +12dB @ 12kHz, Bass: 0dB to +18dB @ 45Hz/Rear Channels – Punch EQ, Treble: 0dB to +12dB @ 12kHz, Bass: 0dB to +18dB @ 45Hz
  • Crossover Controls Front High-Pass (HP): 50-500Hz 24dB/octave Butterworth, Front Low-Pass (LP): 50-500Hz 24dB/octave Butterworth, Rear High-Pass (HP): 50-500Hz 24dB/octave Butterworth, Rear Low-Pass (LP): 50-500Hz 24dB/octave Butterworth
  • Remote Controls Optional Remote Punch EQ (overrides rear channel built-in Punch EQ)
  • Visual Indicators Power, Thermal, Protect
  • Power Wire Gauge 8 AWG to 4 AWG
  • Power Input Connector Block
  • Speaker Wire Gauge 8 AWG to 18 AWG
  • Speaker Output Connector Screw terminal barrier strip
  • Cooling Convection
  • Operating Voltage 9 – 16 VDC
  • Recommended Fuse (not included) 60 A
  • Average Current Draw (13.8V Music) 30 A
  • Max. Current Draw (13.8V Sinewave) 60 A
  • Suggested Alternator 75 A
  • Dimensions (H x W x D) 2.14 x 8.14 x 13.66 (in)/5.42 x 20.68 x 34.69 (cm)
  • Shipping Weight 11.90 lbs. (5.39 Kg.)

Rockford Fosgate T4004 Specs

Weight 5.39 kg
Dimensions 34.69 × 20.68 × 5.42 cm

Rockford Fosgate: Revolutionizing Audio in Automotive, Marine, and Motorcycle Industries

Rockford Fosgate, an iconic American brand, has carved a niche in the audio industry, particularly in automotive, marine, and motorcycle sectors. Known for their robust and high-quality audio products, Rockford Fosgate continues to innovate and provide exceptional sound systems that cater to audiophiles and enthusiasts who demand superior sound quality and durability in challenging environments.

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