---
product_id: 20191156
title: "Power T400X4ad 400 Watt 4-Channel Amplifier | Class-AD with Constant Power"
brand: "rockford fosgate"
price: "3015.31 DT"
currency: TND
in_stock: true
category: "Rockford Fosgate"
url: https://www.desertcart.tn/products/20191156-power-t400x4ad-400-watt-4-channel-amplifier-class-ad-constant
store_origin: TN
region: Tunisia
---

# 400W max power output Ultra-compact 1.6” x 4.3” x 8.3” size Class-AD tech with Constant Power across 2Ω & 4Ω Power T400X4ad 400 Watt 4-Channel Amplifier | Class-AD with Constant Power

**Brand:** rockford fosgate
**Price:** 3015.31 DT
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Meets Precision — Amplify Your Drive, Own the Sound!

## Quick Answers

- **What is this?** Power T400X4ad 400 Watt 4-Channel Amplifier | Class-AD with Constant Power by rockford fosgate
- **How much does it cost?** 3015.31 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/20191156-power-t400x4ad-400-watt-4-channel-amplifier-class-ad-constant)

## Best For

- rockford fosgate enthusiasts

## Why This Product

- Trusted rockford fosgate brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Sound Control:** On-board Punch EQ with +18dB boost at 45Hz and Butterworth crossover ensures your bass hits hard and clear.
- • **Powerhouse in a Compact Frame:** Delivers 400 Watts of clean, punchy power in a sleek, space-saving design perfect for any ride.
- • **Versatile 4-Channel Flexibility:** Supports 4 channels at 100W each or bridged 2-channel mode at 200W, ideal for hybrid cars, motorcycles, and UTVs.
- • **Built to Last with Rockford Quality:** Rugged build backed by a 2-year parts and labor warranty means this amp keeps up with your lifestyle.
- • **Consistent Power, No Matter the Load:** Proprietary Constant Power amps pump up to 25% more power across all impedance loads for flawless performance.

## Overview

The Rockford Fosgate T400X4ad is a compact yet powerful 400 Watt Class-AD 4-channel amplifier engineered for consistent high performance across 2Ω and 4Ω loads. Its proprietary Constant Power technology delivers up to 25% more power, making it perfect for a variety of vehicles including hybrids and motorcycles. Featuring advanced sound shaping with Punch EQ and Butterworth crossover, it offers precise audio control in a durable package backed by a 2-year warranty.

## Description

Buy Rockford Fosgate T400X4ad Power 400 Watt Class-ad 4-Channel Amplifier: Multichannel Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Our ultra-compact (1.6” x 4.3” x 8.3”) Power T400X4ad 4-channel amplifier produces more power per square inch than any other model we make with 400 Watts of POWER
- Proprietary Constant Power amps are the most powerful on the market, delivering up to 25% more power across all impedance loads (100 Watts x 4 @ 4-Ohm or 100 Watts x 4 @ 2-Ohm or 200 Watts x 2 @ 4-Ohm Bridged)
- Proprietary Class-AD technology, featuring Constant Power to produce the same output at both 4-Ohm and 2-Ohm, making it perfect for hybrid, electric, small cars, trucks, motorcycles, and side-by-side UTVs
- High-level auto turn-on, CLEAN circuit input/output clip detection, On-board Punch EQ with +18dB boost @ 45Hz and 12dB/octave Butterworth crossover make T400X4ad an impressive POWER house
- Famous Rockford Fosgate build quality ensures that the T400X4ad will handle everything you throw at it! Full 2-year parts and labor warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LMNLGDY |
| Best Sellers Rank | #55,216 in Electronics ( See Top 100 in Electronics ) #103 in Car Multichannel Amplifiers |
| Brand | Rockford Fosgate |
| Brand Name | Rockford Fosgate |
| Customer Reviews | 4.6 out of 5 stars 116 Reviews |
| Global Trade Identification Number | 00780687342388 |
| Included Components | A Amplifier With Standard Accessories |
| Item Dimensions | 11 x 3 x 6 inches |
| Item Weight | 3 Pounds |
| Item dimensions L x W x H | 11 x 3 x 6 inches |
| Manufacturer | Rockford Fosgate |
| Maximum Supply Voltage | 12 Volts (DC) |
| Model | T400X4ad |
| Mounting Type | Boat Mount |
| Number of Channels | 4 |
| Output Power | 400 Watts |
| Package Type Name | box" or "installation kit |
| Part Number | T400X4ad |
| Specification Met | Implied 12v Standard Voltage and Potential Compliance With Industry-specific Audio Standards |
| UPC | 780687342388 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Warranty Description | 1-Year Manufacturer Warranty |

## Product Details

- **Item dimensions L x W x H:** 11 x 3 x 6 inches
- **Voltage:** 12 Volts
- **Manufacturer:** Rockford Fosgate
- **Mounting Type:** Boat Mount
- **Brand:** Rockford Fosgate

## Images

![Power T400X4ad 400 Watt 4-Channel Amplifier | Class-AD with Constant Power - Image 1](https://m.media-amazon.com/images/I/61M8GZUoafL.jpg)

## Questions & Answers

**Q: Theses are just micro amps right? Can be used in car not just bikes**
A: That is correct. You can use them for any application you would use a normal amp for. Because of their size they are typically used in settings that have very limited space.

**Q: Does this amp come with any wiring? Looks like they changed the rca plug to something else on the amp**
A: There is a molex that plugs into the amp that has the RCA's on it., I can offer you a very aggressive price on this unit and all needed install items. Simply text me at 512-750-8726 for a quote. Thanks!!

**Q: is there a mounting plate for a 2012 victory cross country**
A: Unfortunately, no. You would need to fabricate your own mounting plate. Thanks for your interest!

**Q: Is this better in sound quality than Rockford's Prime line up ?**
A: Yes! Absolutely I own both and sound is way better with the power series’s

## Frequently Bought Together

- Rockford Fosgate T400X4ad Power 400 Watt Class-ad 4-Channel Amplifier
- Rockford Fosgate T1650 Power 6.5" 2-Way Coaxial Full Range Speakers - Black (Pair)
- Rockford Fosgate R2-500X4 Prime 500-Watt 4-Channel Amplifier

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**Shop now:** [https://www.desertcart.tn/products/20191156-power-t400x4ad-400-watt-4-channel-amplifier-class-ad-constant](https://www.desertcart.tn/products/20191156-power-t400x4ad-400-watt-4-channel-amplifier-class-ad-constant)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-23*