• 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 in this listing

Rockford Fosgate 4 Channel 400 Watt Class AD AmplifierT400X4ad

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

The Power T400X4ad 400 Watt 4-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) Rockford Fosgate RFK8 Amp install kit



Features:

- 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 - 2/4 channel input switch

- 4 Ohm bridged capable

- 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



Specifications:

Number of Channels: 4

Total Power: 400 Watts

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

Input Sensitivity: 150 mV to 12 V

Circuit Topology Class: Class AD

Efficiency (average): More than 75%

Power Wire Gauge: 8 AWG

Power Input Connector: Detachable Compression Terminal

Speaker Wire Gauge: 16 AWG

Cooling: Dual Fan Cooled

Operating Voltage: 9 - 16 VDC

Recommended Fuse(not included): 60 A

Average Current Draw (13.8V Music): 28 A

Max. Current Draw (13.8V Sinewave): 55 A

Suggested Alternator: 75 A



Rated Power:

100 Watts x 4 @ 4-Ohm

100 Watts x 4 @ 2-Ohm

200 Watts x 2 @ 4-Ohm Bridged



Dynamic Power:

128 Watts x 4 @ 4-Ohm

152 Watts x 4 @ 2-Ohm

290 Watts x 2 @ 4-Ohm Bridged



Bridgeable:

Yes

Front Terminals: Left (+) Right (-)

Rear Terminals: Left (+) Right (-)



Total Harmonic Distortion (THD+Noise):

4-Ohm: less than 1.0%

2-Ohm: less than 1.0%



Signal Input:

Front High/Low Level Input: 4-Pin harness

Rear High/Low Level Input: 4-Pin harness



Tone Controls:

Treble: 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

2VIOLET: 1% THD

3RED: 10%+ THD



Speaker Output Connector:

Front: 4-Pin Harness

Rear: 4-Pin Harness



Dimensions:

1.6 x 4.3 x 8.3 (in.)

4.1 x 10.8 x 21.1 (cm)



Weight:

3.4 Lbs. (1.54 Kg.)