Rockford Fosgate T400-4 Power 400 Watt 4-Channel Amplifier

Rockford Fosgate T400-4 Power 400 Watt 4-Channel Amplifier

Model Number: T400-4
Web Code: 12244186
Sold and shipped by | 4.4 seller rating (84 reviews)

Available online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.


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.


No information available.

Seller Return Policy

Read return policy

The T400-4 amplifier is perfect for front/rear fading stereo systems or when dedicated amplification is required between front stage speakers and rear subwoofer(s). Thanks to the Dynamic Thermal Management, the small chassis design insures it can be installed in any location – like under front seats. 24dB/octave crossover 2/4 channel input switch MOSFET power supply MOSFET output stage 4 Gauge power/ground connectors Audiophile grade speaker connections. Recommended Fuse (not included)60 A Channel Separation>60 dB Signal-to-Noise (CEA)>90 dB Damping Factor>200 Common Mode Rejection>65 dB Average Current Draw (13.8V Music)30 A Shipping Weight11.90 Lbs. (5.39 Kg.) CEA-2006 CompliantCEA-2006 Guidelines CEA-2006 Power Rating 60W x 4 @ 4Ω ≤1.0% THD+N Max. Current Draw (13.8V Sinewave)60 A Total Harmonic Distortion (THD+Noise)4-Ohm: <1.0% 2-Ohm: <1.0% Efficiency (average)69% @ 4-Ohm 68% @ 2-Ohm Dimensional Diagram 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 Operating Voltage9 - 16 VDC Suggested Alternator75 A Input Sensitivity150 mV to 4 V Number of Channels4 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 Total Power (Sum of Rated Power)400 Watts RMS BridgeableYes Crossover ControlsFront 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 Tone ControlsFront 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 Signal InputFront Low level: 1 RCA pair Rear Low level: 1 RCA pair Signal Outputn/a Power Input ConnectorBlock Power Wire Gauge8 AWG to 4 AWG Speaker Output ConnectorScrew terminal barrier strip Speaker Wire Gauge8 AWG to 18 AWG Heat Sink TypeCast aluminum CoolingConvection Remote ControlsOptional Remote Punch EQ (overrides rear channel built-in Punch EQ) Visual IndicatorsPower Thermal Protect Circuit Topology ClassClass A/B Frequency Response20Hz to 20kHz +/- 1dB 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 Charges
Free standard shipping may be available on orders over a minimum amount (before taxes, fees, and promo codes). Shipping charges may vary based on item size and your shipping address. Want a shipping charge estimate? Simply add an item to your cart, then access the cart and enter your postal code in the shipping estimate section.
Processing Time
Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.
Shipping Area Restrictions
Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
Singh Electronics Restocking Fees / Return Eligibility
Category Return Period Un-opened Opened
Headphones and Earphones (all types) 30 Days 0% Not Returnable
All other products 30 Days 0% 15%

All returned products must include original packaging.

Return shipping costs will be paid by the seller for all cases where the product is defective, damaged or incorrect. For other cases (e.g. you changed your mind), you will be responsible for this cost.

Seller Exceptions

Following are not returnable once opened and used: Car Alarm, Remote Starters & Modules

To request a return

Please contact the seller directly from your Order details page, and provide the following information:

  • Web ID (8-digit number) & product description
  • Number of items to be returned
  • Date you recieved your product
  • Condition of product
  • Condition of packaging
  • Reason for return

All refunds will be processed within 4 days