Rockford Fosgate 400 Watt 4 Ohm 4-Channel Marine Powersports Amplifier — Big Jeff Audio Dealer Platform
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  • 4-channel marine/powersports amplifier
  • CEA-2006 compliant
  • conformal-coated circuit board suitable for power sports and marine applications
  • marine-grade stainless steel hardware
  • Class AD amp technology

Rockford Fosgate 400 Watt 4 Ohm 4-Channel Marine Powersports Amplifier TM400X4AD

This Listing Includes:

  • (1) 400 Watt 4 Ohm 4-Channel Marine Powersports Amplifier

The Power TM400X4ad 400 Watt 4-channel ultra-compact, amplifier is built on Rockford Fosgates 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.

Product highlights:

  • 4-channel marine/powersports amplifier

  • 100 watts RMS x 4 at 4 ohms (400w peak)

  • 100 watts RMS x 4 at 2 ohms

  • 200 watts RMS x 2 at 4 ohms (bridged)

  • CEA-2006 compliant


  • Class AD amp technology

  • 4-ohm/2-ohm multi-impedance constant power

  • conformal-coated circuit board  suitable for power sports and marine applications

  • marine-grade stainless steel hardware

  • twin cooling fans and real-time thermal sensing

  • hidden top-mount control panel

  • CLEAN set-up technology with LED input/output indicators

  • speaker-level inputs (speaker wire to RCA adapter required)


  • variable low- and high-pass filters (50-250 Hz at 12 dB/octave)

  • tone controls: 0-18 dB at 45 Hz; 0-14 dB at 12,000 Hz

  • frequency response: 20-20,000 Hz

  • fuse rating: 60A x 1 (fuse not included)

  • dimensions: 8-5/8"D x 1-11/16"H x 4-5/16"W

  • requires 8-gauge power and ground cable

Payment Information


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We accept PayPal for all international orders, your address must be verified with PayPal.

We are not responsible for any custom duties or brokerage fees that may apply for all international orders.

When you click on the Buy it Now button you are entering into a
contract whereby you agree to purchasing the item at the price listed.

If you want to ship your item to an alternate address please add
that address on your PayPal account and use the address as the default
or confirmed address to pay us through PayPal

With Free Same Business Day Shipping we work to get you your order Fast. 


All orders over $500 will require a signature for delivery.

All pre-selected shipping rates and methods are for customers with a
valid residential or commercial address within the Contiguous 48 United
States (PO Boxes address may require additional charges).

P.O. Boxes, APO/FPO addresses, Alaska, Hawaii, Puerto Rico, Guam,
U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada,
and other countries may require additional shipping fees. Please contact
a member of our team for detailed shipping charges.

Shipping is available only to PayPal verified addresses. When making
payment please confirm your address has been verified with PayPal. Once
payment is made shipping address can not be changed/altered. Payments
made using an unverified PayPal address will be refunded and order will
be canceled.

We will not accept request to change shipping address once payment
has been made. Please confirm your shipping address is up-to-date and

Typical handling time for orders is 1-business day. We do our best
to ship every package with-in 1 business day of receiving a cleared
payment. In some circumstances additional time may be need, in which
case we will contact buyer.

Shipped orders that are returned by the shipping company due to an
insufficient address or an undeliverable address will be refunded less a
20% restocking fee.

If package is refused or marked undeliverable and returned
back to us by the carrier, you will need to pay the shipping cost in
full to have the package sent back to you or we can refund the money
minus the cost of shipping


If you have not received your package, but the tracking information shows that it was delivered,
please do the following within 36 hours of expected, stated delivery:


Verify the shipping address on the order is the address where you are looking for the package

Look for a notice of attempted delivery

Look around the delivery location for the package, or see if a neighbor has accepted the delivery

Be sure to double check your mailbox and other usual spots for package delivery


If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.