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.

DSM

DSM utilize 1% tight-tolerances improving efficiency of the circuit, decreases cross-talk from other discrete components and ...

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DSM

DSM utilize 1% tight-tolerances improving efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature.

DTM

Dynamic Thermal Management evenly distributes excess heat across entire amplifier heatsink.

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DTM

Dynamic Thermal Management evenly distributes excess heat across entire amplifier heatsink.

Engineered In The USA

These Avatars are a personal signature from the Rockford Fosgate team member(s) who designed and engineered ...

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Engineered In The USA

These Avatars are a personal signature from the Rockford Fosgate team member(s) who designed and engineered this fanatic product. This statement illustrates our commitment to being Designed and Engineered in the U.S.A.

MEHSA³

MEHSA³ reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life span.

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MEHSA³

MEHSA³ reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life span.

NOMAD

NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and ...

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NOMAD

NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances.

CEA-2006 Compliant

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These guidelines mean your amplifier's ...

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CEA-2006 Compliant

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These guidelines mean your amplifier's output power ratings are REAL POWER numbers, not inflated marketing ratings.

Punch EQ2

Onboard equalizer with up to +18dB @ 45Hz and/or up to +12dB boost at 12kHz.

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Punch EQ2

Onboard equalizer with up to +18dB @ 45Hz and/or up to +12dB boost at 12kHz.

TO-247 MOSFETs

(left-OLD | right-NEW)
Rockford Fosgate amps use custom TO-247 MOSFETs. These have 60% more ...

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TO-247 MOSFETs

(left-OLD | right-NEW)
Rockford Fosgate amps use custom TO-247 MOSFETs. These have 60% more metal tab area for more power capacity, lower impedance and improved heat dissipation over traditional TO-220 MOSFETs found in competitor amps.

TRANS•ana

Trans•ana is a Class A/B topology that simplifies the signal path of the amplifier allowing the ...

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CEA-2006 Compliant

CEA-2006 Power Rating
60W x 4 @ 4Ω
≤1.0% THD+N

Number of Channels

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

Signal Output

n/a

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

Heatsink

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

Dimensional Diagram

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.)

DSM

DSM

DTM

DTM

Engineered In The USA

Engineered In The USA

MEHSA3

MEHSA3

NOMAD

NOMAD

CEA-2006 Compliant

CEA-2006 Compliant

Punch EQ2

Punch EQ2

TO-247 MOSFETs

TO-247 MOSFETs

TRANS•ana

MEHSA³

MEHSA³

ROCKFORD FOSGATE

ROCKFORD FOSGATE Power 400 Watt 4-Channel Amplifier