---
product_id: 179910954
title: "Formula Series 400-Watt 4-Channel Class AB Amp"
brand: "mb quart"
price: "€ 69.16"
currency: EUR
in_stock: false
url: https://www.desertcart.it/products/179910954-formula-series-400-watt-4-channel-class-ab-amp
store_origin: IT
region: Italy
---

# 1000W peak power output 1 Ohm stable for deep bass Variable electronic crossover Formula Series 400-Watt 4-Channel Class AB Amp

**Brand:** mb quart
**Price:** € 69.16
**Availability:** ❌ Out of Stock

## Summary

> 🎵 Unleash the Power, Feel the Pulse – Your Ride’s New Sound Revolution!

## Quick Answers

- **What is this?** Formula Series 400-Watt 4-Channel Class AB Amp by mb quart
- **How much does it cost?** € 69.16 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/179910954-formula-series-400-watt-4-channel-class-ab-amp)

## Best For

- mb quart enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Integration:** Hi-level DC signal sensing means no extra remote wire—plug and play with OEM systems effortlessly.
- • **Pro-Grade Sound Quality:** Class Q1 tech combines D-Class efficiency with audiophile-grade clarity for a premium listening experience.
- • **Power That Commands Attention:** Delivers a thunderous 1000 watts to energize your subwoofer with crystal-clear precision.
- • **Bass Control at Your Fingertips:** Variable electronic crossover lets you tailor frequencies for a perfectly balanced soundstage.
- • **Built to Last, Built to Perform:** Heavy-duty connections resist corrosion and ensure stable, long-lasting power delivery.

## Overview

The MB Quart FA1-1000.1 is a high-performance mono channel car amplifier delivering 1000 watts of power with 1 ohm stability. Featuring advanced Class Q1 technology, it offers superior sound quality and efficiency, variable electronic crossovers for precise frequency control, and DC signal sensing for easy integration into OEM systems. Heavy-duty connections and a wired bass remote ensure durability and user-friendly customization, making it a top choice for audiophiles seeking powerful, clean bass in their vehicle.

## Description

The MB Quart FA1-400. 4 Formula Series 400 Watt 4 Channel Class AB Amp features innovative sound quality and power technology. The FA1-400. 4 is a 400 watt bridgeable car audio amplifier. Formula amps feature DC Sensing to allow any amplifier to be easily integrated into an OEM system by simply adapting a RCA cable from the source unit.

## Features

- The MB Quart FA1-400. 4 Formula Series 400 Watt 4 Channel Class AB Amp features innovative sound quality and power technology. The FA1-400. 4 is a 400 watt bridgeable car audio amplifier. Formula amps feature DC Sensing to allow any amplifier to be easily integrated into an OEM system by simply adapting a RCA cable from the source unit.
- 50 watts x 4 at 2 ohm
- 100 watts x 4 at 4 ohms
- Bridgeable
- Variable high-pass crossover with 12 dB per octave: CH1 and CH2: Switched, Full/HPF/LPF, 50 Hz to 500 Hz
- fit type: Universal Fit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07VN8TRPH |
| Best Sellers Rank | #273,932 in Electronics ( See Top 100 in Electronics ) #932 in Car Multichannel Amplifiers |
| Brand Name | MB Quart |
| Customer Reviews | 4.5 4.5 out of 5 stars (79) |
| Global Trade Identification Number | 00806576230120 |
| Included Components | Formula Series 400-Watt 4-Channel Class AB Amp |
| Item Type Name | Formula Series 400-Watt 4-Channel Class AB Amp |
| Item Weight | 5 pounds |
| Manufacturer | MB Quart |
| Maximum Output Power | 400 watts |
| Maximum Supply Voltage | 12 volts_of_direct_current |
| Minimum Supply Voltage | 12 volts |
| Model | FA1-400.4 |
| Mounting Type | Surface Mount |
| Number of Channels | 4 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Package Type Name | box |
| Part Number | XFA14004 |
| Specification Met | Oem |
| UPC | 806576230120 |
| Unit Count | 1 Count |
| Voltage | 12 volts |
| Warranty Description | Manufacturer |

## Product Details

- **Manufacturer:** MB Quart
- **Maximum Supply Voltage:** 12 volts_of_direct_current
- **Minimum Supply Voltage:** 12 volts
- **Mounting Type:** Surface Mount
- **Voltage:** 12 volts

## Images

![Formula Series 400-Watt 4-Channel Class AB Amp - Image 1](https://m.media-amazon.com/images/I/41JgB6cb2JL.jpg)
![Formula Series 400-Watt 4-Channel Class AB Amp - Image 2](https://m.media-amazon.com/images/I/51W2O8omhiL.jpg)
![Formula Series 400-Watt 4-Channel Class AB Amp - Image 3](https://m.media-amazon.com/images/I/41WIz8xzlQL.jpg)
![Formula Series 400-Watt 4-Channel Class AB Amp - Image 4](https://m.media-amazon.com/images/I/415HvehaxyL.jpg)
![Formula Series 400-Watt 4-Channel Class AB Amp - Image 5](https://m.media-amazon.com/images/I/31VzRsUKPQL.jpg)

## Available Options

This product comes in different **Model** options.

## Questions & Answers

**Q: Can this push two mb quart dw1-304 discus series 12" 400w dual voice-coil subwoofers? thank you!**
A: Yes it will,modest bass,but if you wanted a bit louder i buy 1 for each sub,i have one sub discus 12 ' half volume with 1.1500 watt mb ,sound clean tigh bass.

**Q: What are the dimensions of the amp?**
A: Length = 10.25”
Width = 7.375”
Height = 2.375”

**Q: RMS watts ???**
A: 600 RMS

**Q: it has 2 channels?**
A: No. It has outputs for 2 subs but it is not 2 channel. That is why it is called a "mono" amplifier. Mono means ONE channel. Stereo means 2 channel. Then they also make 4 channel amps and 5 channel which are designed to run 4 speakers plus a subwoofer.

## Frequently Bought Together

- MB Quart FA1-1000.1 Mono Channel Car Audio Amplifier (Black) - Class SQ Amp, 1000-Watt, 1 Ohm Stable, Variable Electronic Crossover, LED System Protection, Heavy Duty Connections, Bass Remote Included
- 2 MB Quart DS1 254 800 Watt 4 Ohm 10 inches Shallow, Slim, Subwoofers, Car, Truck, DVC, RMS 400 Watts per Subs, Durable Powder Coat

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**Shop now:** [https://www.desertcart.it/products/179910954-formula-series-400-watt-4-channel-class-ab-amp](https://www.desertcart.it/products/179910954-formula-series-400-watt-4-channel-class-ab-amp)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-09-26*