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Overview
One of the Most Powerful Compact Amplifiers on the Market Today. This amplifier is perfect for very high-power fairing speakers or saddlebag lid speakers and woofers. 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. The ultra-high efficiency and small footprint make this amplifier perfect for any Harley stereo system.
Fitment
- Compatible Year - 1998+
- Compatible Model - Touring
- Location - Fairing
- Additional Adapter Required - Yes - RFK-HD 9813 or RFK-HD14
- Modification Required - No
- Plug & Play - Yes - SG, RG, Ultra, 14-Up CVO, No for 1998-2013 CVO
- Works with Electric Lid Locks - N/A
Warranty
1 year
Features
Very High Level Performance
Road Glide
Street Glide
- Balanced RCA-type inputs for both factory and aftermarket radios
- Bridgeable for ultra insane powerful full-range output to a single driver
- Built-in adjustable high and low pass crossovers
- Designed specifically for high vibration, heat, and moister applications
- Charging system friendly to Harley stator and battery
- Top-mounted controls
- Dual fan cooled
- Real-time thermal sensing
- Dual extruded heat sinks
- Discrete surface mount 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
- C.L.E.A.N. input/output clip detection and indicator LEDs
Specifications
- Model: T400X2AD
- Number of Channels: 2
- Total Power: 400 Watts (Sum of Rated Power)
- Rated Power: 200 Watts x 2 @ 4-Ohm (RMS); 200 Watts x 2 @ 2-Ohm; 400 Watts x 1 @ 4-Ohm Bridged
- Bridgeable: Yes
- Terminals: Left (+) Right (-)
- Frequency Response: 20Hz - 20kHz +/-1dB
- Input Sensitivity: 150 mV - 12 V
- Circuit Topology Class: Class AD
- Efficiency: >75% (average)
- Total Harmonic Distortion: 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; Low-Pass: 50Hz - 250Hz @ 12dB/Octave; All-Pass: Yes
- 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
- Average Current Draw: 23 A (13.8V Music)
- Max. Current Draw: 45 A (13.8V Sinewave)
- Dimensions: 1.6" x 4.3" x 7.0" (L x W x D)
What's Included
- (1) 2-Channel Amplifier
- (1) Owners Manual
Bread Finance

Flexible buy now and pay later financing with split-pay option
Snap Finance
Perfect way to pay within 100 days with no credit history required and no hard credit check. We cover the financing fees for you as long as you pay off your purchase within 100 days. So there are no hidden fees. Apply without any impact on your credit score.

100 Day same as cash financing
Shipping information
Usually ships in 2 to 3 business days. We process and build orders in the order in which they are received. This allows our experts to review every order and check that it is correct for your specific bike. This means sometimes you might wait a little longer to receive your order but it’s always worth it!
Returns information
Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We’ll get you a replacement or refund in a snap! You can find our refund policy here.
Lead Time
Lids have up to a two-week lead time. Often we have these lids in stock, and they ship in just a few days but plan on two weeks to be safe.

Easy Returns
Simply contact us for a return Authorization number and send your item to our returns center for fast processing. We’ll get you a replacement or refund in a snap! You can find our return policy here.

your part is guaranteed to fit
We test fit every part we sell on actual bikes in order to verify fitment on each moden, generation, and in each possible location. You can be sure that if we have stated that a part fits your bike, that it will, or your money back. You will find model, year, and location fitment details on most product pages.

We thoroughly test every part we sell on a real bike
There are a lot of parts out there that we refuse to sell. If it’s not up to our high standards, it never makes it to this website. We have parts that fit various budgets and levels of insanity, but all parts we carry are exceptional performers.

WE ARE FULLY AUTHORIZED RETAILERS FOR ALL BRANDS WE SELL
There are only a select few authorized online retailers for the brands we sell. Most all online retailers (even the really big ones) are not authorized at all! And the manufacturer’s warranty is void before you even get your items.

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You can rest easy - your personal details are never shared, sold, or rented to anyone either.
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