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Rockford Fosgate T400X2AD 2Channel 400W Class AD Compact Amplifier + Install Kit

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Original price $589.99
Original price $589.99 - Original price $589.99
Original price $589.99
Current price $419.99
$419.99 - $419.99
Current price $419.99

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  • Get a free one-year extended warranty on this select Rockford Fosgate Amplifier when purchased as an Amplifier Installation Kit bundle.
  • Constant Power technology maintains full output power despite impedance changes
  • C.L.E.A.N. gain setup system includes clip lights and link to Rockford Fosgate's setup tones
  • variable Punch EQ (bass/treble boost: 0-18 dB at 45 Hz, 0-14 dB at 12,500 Hz)
  • 8-gauge power and ground leads and a 60-amp fuse recommended — wiring and hardware included with this listing

Rockford Fosgate T400X2ad 2 Channel 400 Watt Class AD Compact Amplifier

Get a free one-year extended warranty on this select Rockford Fosgate Amplifier when purchased as an Amplifier Installation Kit bundle.

The Power T400X2ad 400 Watt 2-channel ultra-compact amplifier is built on Rockford Fosgate's proprietary Class-AD technology, featuring Constant Power to produce the same output at both 4-Ohm and 2-Ohm impedances. Flexible vehicle integration enabled through low-level and high-level inputs with auto turn-on. Top mounted controls allow easy access to built-in crossover and C.L.E.A.N. input/output clip detection circuits. The 3-stage thermal lock extrusion with dual fan forced induction keeps everything cool while real-time thermal/protection schemes safeguard the amplifier.

This Listing Includes:

(1) Amplifier

(1) 14" Input harness (4-pin Molex connector to 2 female RCAs)

(1) 8" Speaker output harness (4-pin Molex connector to bare wire)


- Rockford Fosgate proprietary Class AD technology

- 4/2 Ohm muti-impedance Constant Power

- Differential inputs with high level auto turn-on feature

- 8 AWG power/ground connector w/ upgraded RCA connectors

- Remote-Out feature when using high level inputs

- 4 Ohm bridged capable

- 2013 PLC2 remote ready

- C.L.E.A.N. input/output clip detection and indicator LEDs

- Top mounted controls

- Dual fan cooled

- Real time thermal sensing

- Dual extruded heat sinks

- Discrete surface mount technology


Number of Channels: 2

Total Power (Sum of Rated Power): 400 Watts

Frequency Response: 20Hz - 20kHz +/-1dB

Input Sensitivity: 150 mV - 12 V

Circuit Topology Class: Class AD

Efficiency (average): More than 75%

Signal Input: High/Low Level Input: 4-Pin harness

Power Wire Gauge: 8 AWG

Power Input Connector: Detachable Compression Terminal

Speaker Wire Gauge: 16 AWG

Speaker Output Connector: 4-Pin Harness

Cooling: Dual Fan Cooled

Operating Voltage: 9 - 16 VDC

Recommended Fuse(not included): 60 A

Average Current Draw (13.8V Music): 23 A

Max. Current Draw (13.8V Sinewave): 45 A

Suggested Alternator: 75 A

Rated Power (RMS Continuous Power):

200 Watts x 2 @ 4-Ohm

200 Watts x 2 @ 2-Ohm

400 Watts x 1 @ 4-Ohm Bridged

Dynamic Power (PVC/PowerCube):

223 Watts x 2 @ 4-Ohm

248 Watts x 2 @ 2-Ohm

449 Watts x 1 @ 4-Ohm Bridged



Terminals: Left (+) Right (-)

Total Harmonic Distortion (THD+Noise):

4-Ohm: Less Than 1.0%

2-Ohm: Less Than 1.0%

Tone Controls:


0 to +14 dB @ 12.5 kHz

Bass: 0 to +18 dB @ 45 Hz

Crossover Controls:

High-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth

Low-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth

All-Pass: Yes

Visual Indicators:

Power: Blue LED

Protect: Red LED

Input Clip: Red LED3

Output Clip: Blue/Violet/Red LED1,2,3

LED Color Legend:

1BLUE: Less Than 0.5% THD


3RED: 10%+ THD

Dimensions (H x W x D):

1.6 x 4.3 x 7 (in.)

4.1 x 10.8 x 17.8 (cm)

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