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  • T400X2AD

    Rockford Fosgate T400X2AD 2 Channel Amplifier

    This is the Rockford Fosgate T400X2AD 2 Channel Amplifier.


    The Power T400X2ad is an ultra-compact, high efficiency 400 Watt stereo amplifier. Features multi-impedance Constant Power, input/output clip detection, top mounted controls and dual fan forced induction cooling. Perfect for hybrid, electric, small cars, trucks, motorcycles, and side-by-side UTVs.
    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.


    • 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
    • 2 Year Warranty
    CEA-2006 Compliant
    CEA-2006 Power Rating
    200W x 2 @ 4Ω
    ≤1.0% THD+N
    Number of Channels
    Total Power 
    (Sum of Rated Power)
    400 Watts
    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 
    223 Watts x 2 @ 4-Ohm 
    248 Watts x 2 @ 2-Ohm 
    449 Watts x 1 @ 4-Ohm Bridged
    Terminals: Left (+) Right (-)
    Frequency Response
    20Hz - 20kHz +/-1dB
    Input Sensitivity
    150 mV - 12 V
    Circuit Topology Class
    Class AD
    Efficiency (average)
    Total Harmonic Distortion (THD+Noise)
    4-Ohm: <1.0% 
    2-Ohm: <1.0%
    Signal Input
    High/Low Level Input: 4-Pin harness
    Signal Output
    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
    Remote Controls
    Optional PLC2 provides Punch Level Control
    Visual Indicators
    Power: Blue LED 
    Protect: Red LED 
    Input Clip: Red LED3 
    Output Clip: Blue/Violet/Red LED1,2,3 

    LED Color Legend: 
    1BLUE: <0.5% THD 
    2VIOLET: 1% THD 
    3RED: 10%+ THD
    Power Wire Gauge
    8 AWG
    Power Input Connector
    Detachable Compression Terminal
    Speaker Wire Gauge
    16 AWG
    Speaker Output Connector
    4-Pin Harness
    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
    Dimensional Diagram
    Dimensions (H x W x D)
    1.6 x 4.3 x 7 (in.) 
    4.1 x 10.8 x 17.8 (cm)
    Shipping Weight
    2.9 Lbs. (1.31 Kg.)