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ROCKFORD FOSGATE

ROCKFORD FOSGATE Power 400 Watt 4-Channel Amplifier

$429.99 USD
T400-4

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 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

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

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DSM
DSM

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

DTM
DTM

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

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DTM
DTM

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

Engineered In The USA
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
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.

MEHSA<sup>3</sup>
MEHSA3

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

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MEHSA<sup>3</sup>
MEHSA3

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

NOMAD
NOMAD

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

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NOMAD
NOMAD

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

CEA-2006 Compliant
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
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
Punch EQ2

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

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Punch EQ2
Punch EQ2

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

TO-247 MOSFETs
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
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&#149;<em>ana</em>
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
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
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.)