SKU: 5424927146

Rockford Fosgate Power T400X4AD - 4 Channel Ultra-Compact Amplifier

Sale price$220.50 Regular price$245.00
Save 10%

Pay in installments of $61.25 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 28 - Sep 2

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Rockford Fosgate Power T400X4AD - 4 Channel Ultra-Compact AmplifierRockford Fosgate Power T400X4AD 4 Channel Ultra Compact Class AD Amplifier The Power T400X4AD 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.

Rockford Fosgate Power T400X4AD - 4 Channel Ultra-Compact Class AD Amplifier

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.

  • Number of Channels: 4
  • Rated Power(RMS Continuous Power):
  • 100 Watts x 4 @ 4-Ohms
  • 100 Watts x 4 @ 2-Ohms
  • 200 Watts x 2 @ 4-Ohms Bridged
  • Total Power (Sum of Rated Power): 400 Watts RMS
  • Dynamic Power (PVC/PowerCube® Measurement)
  • 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 (-)
  • Crossover Controls:
  • High-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth  
  • Low-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth 
  • All-Pass: Yes
  • Tone Controls:
  • Front Channels - Punch EQ
  • Treble: 0dB to +12dB @ 12kHz
  • Bass: 0dB to +18dB @ 45Hz
  • Rear Channels - Punch EQ
  • Treble: 0dB to +14dB @ 12.5kHz
  • Bass: 0dB to +18dB @ 45Hz
  • Signal Input:
  • Front Low level: Front High/Low Level Input: 4-Pin harness
  • Rear Low level: Rear High/Low Level Input: 4-Pin harness
  • Signal Output: N/A
  • Power Input Connector: Detachable Compression Terminal
  • Power Wire Gauge: 10 AWG
  • Speaker Output Connector:
  • Front: 4-Pin Harness
  • Rear: 4-Pin Harness
  • Speaker Wire Gauge: 16 AWG
  • Heat Sink Type: Extruded Aluminum
  • Cooling: Dual Fan Cooled
  • Remote Controls:
  • Visual Indicators:
  • Power: Blue LED 
  • Protect: Red LED 
  • Input Clip: Red LED 
  • Output Clip Blue/Red LEDrock
  • Circuit Topology Class: Class A/B
  • Frequency Response: 20Hz to 20kHz +/- 1dB
  • Dimensions (HxWxL):
  • 1.6 x 4.25 x 8.3 (in)
  • 4.1 x 10.79 x 21.1 (cm)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 5424927146

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 22 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
P
Verified Purchase
pda0211
West Palm Beach, US
★★★★★ 5
It works great!
This mount looks good mounted on my KIA Stinger’s center vent. It allows for the vent to cool both the phone and the cabin, while not looking like it’s out of place. The mounting is secure, and I don’t worry about my phone falling while driving be cause the magnet is very strong. The vent mounting bracket looks like it belongs in the car. An inexpensive alternative to using mounts with 3M tape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
G
Verified Purchase
guja Mosinava
Cuba, US
★★★★★ 5
👌
👌
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
R
Verified Purchase
Rich Johnson
Battle Creek, US
★★★★★ 5
Nice Mount
Beast phone mount I have used in the past three years! Idea for a small car.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2026
R
Verified Purchase
Robert Simpson
Chelsea, US
★★★★★ 5
Love it.
So far so good. Very sturdy, and easy to mount.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 2, 2025
A
Verified Purchase
Amanda Waln
Cuba, US
★★★★★ 5
Great!
Best fit for my stinger and is perfect to hold my 2024 razr
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 7, 2025

recommand products