---
product_id: 597015703
title: "QS400.4 2 Ohm Mini Compact 4 Channel Car Audio Amplifier 4 x 100 Watts RMS at 2 Ohm - Stereo 12 Volts Amp Class D Full Range Bridgeable"
brand: "prv audio"
price: "NT$14827"
currency: TWD
in_stock: true
reviews_count: 5
category: "Prv Audio"
url: https://www.desertcart.tw/products/597015703-qs400-4-2-ohm-mini-compact-4-channel-car-audio
store_origin: TW
region: Taiwan
---

# 400W RMS power output Compact 4x5.4x2 inch footprint Stable 2 Ohm 4-channel design QS400.4 2 Ohm Mini Compact 4 Channel Car Audio Amplifier 4 x 100 Watts RMS at 2 Ohm - Stereo 12 Volts Amp Class D Full Range Bridgeable

**Brand:** prv audio
**Price:** NT$14827
**Availability:** ✅ In Stock

## Summary

> 🎶 Compact Powerhouse: Big Sound, Small Package!

## Quick Answers

- **What is this?** QS400.4 2 Ohm Mini Compact 4 Channel Car Audio Amplifier 4 x 100 Watts RMS at 2 Ohm - Stereo 12 Volts Amp Class D Full Range Bridgeable by prv audio
- **How much does it cost?** NT$14827 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/597015703-qs400-4-2-ohm-mini-compact-4-channel-car-audio)

## Best For

- prv audio enthusiasts

## Why This Product

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

## Key Features

- • **Space-Savvy Design:** Ultra-compact chassis fits seamlessly into any vehicle setup without sacrificing power or performance.
- • **Plug & Play Versatility:** Stable at 2 Ohms, perfect for multi-speaker setups and flexible wiring configurations.
- • **Bridge for Double Impact:** 2-channel bridged mode pumps out 2 x 200 Watts RMS, maximizing your speaker’s potential.
- • **Power Your Ride with Precision:** Delivers 4 x 100 Watts RMS at 2 Ohms for crystal-clear, full-range sound that fills your car.
- • **Brazilian Tech Meets Efficiency:** Class D digital amplifier engineered for peak electrical efficiency, preserving your car battery life.

## Overview

The PRV Audio QS400.4 is a compact, 4-channel Class D car amplifier delivering 4 x 100 Watts RMS at 2 Ohms, with bridgeable channels for up to 2 x 200 Watts RMS. Engineered with Brazilian digital technology, it offers high efficiency and a small footprint (4" x 5.4" x 2"), making it ideal for professional-grade car audio setups that demand power and space-saving design.

## Description

PRV Audio QS400.4 2 Ohm Mini Compact 4 Channel Car Audio Amplifier 4 x 100 Watts RMS at 2 Ohm - 400 Watt Amp Stereo 12 Volts Amp Class D Full Range Bridgeable || 4 x 100 watts TRUE RMS certified at full range output Digital Class D Brazilian Technology || 4 Channel car audio amplifier stable at 2 Ohm gives you the benefit of wiring multiple speakers and dividing the power per channel. || Engineered to be the most efficient full range amplifier so that you can get the most out of your vehicle’s electrical system! || A small footprint and compact chassis make this amplifier easy to install anywhere in the vehicle: 4″ Wide x 5.40″ Length x 2″ Height || 2 Channel Bridged - double the power output to your speakers by bridging two channels. Minimum impedance of 4 Ohms per bridged channel at output power of 2 x 200 Watts RMS.

Review: Small and easy to mount. Sounds good for my jeep.
Review: Sound quality is OK. For its size and price it's pretty good.

## Features

- 4 x 100 watts TRUE RMS certified at full range output Digital Class D Brazilian Technology
- 4 Channel car audio amplifier stable at 2 Ohm gives you the benefit of wiring multiple speakers and dividing the power per channel.
- Engineered to be the most efficient full range amplifier so that you can get the most out of your vehicle’s electrical system!
- A small footprint and compact chassis make this amplifier easy to install anywhere in the vehicle: 4″ Wide x 5.40″ Length x 2″ Height
- 2 Channel Bridged - double the power output to your speakers by bridging two channels. Minimum impedance of 4 Ohms per bridged channel at output power of 2 x 200 Watts RMS.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item dimensions L x W x H | 13.7 x 10.2 x 5.1 Centimeters |
| Voltage | 12 Volts |
| Manufacturer | PRV Audio |
| Maximum Supply Voltage | 12 Volts |
| Minimum Supply Voltage | 14 Volts |
| Mounting Type | Freestanding |
| Brand | PRV Audio |
| Number of Channels | 4 |
| Output Power | 1E+2 Watts |
| Package Type Name | Boxed |
| Material | aluminum |
| UPC | 810075523898 |
| Country of Origin | USA |
| Model number | QS400.4 2 Ohm |
| Item Weight | 608 g |
| Product Dimensions | 13.72 x 10.16 x 5.08 cm; 608 g |
| Item model number | QS400.4 2 Ohm |
| Item Height | 2 Inches |
| Item Width | 4 Inches |
| Are batteries included? | No |

## Product Details

- **Item dimensions L x W x H:** 13.7 x 10.2 x 5.1 Centimeters
- **Manufacturer:** PRV Audio
- **Maximum Supply Voltage:** 12 Volts
- **Minimum Supply Voltage:** 14 Volts
- **Voltage:** 12 Volts

## Images

![QS400.4 2 Ohm Mini Compact 4 Channel Car Audio Amplifier 4 x 100 Watts RMS at 2 Ohm - Stereo 12 Volts Amp Class D Full Range Bridgeable - Image 1](https://m.media-amazon.com/images/I/71nrv3H+SeL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***. on 10 October 2025*

Small and easy to mount. Sounds good for my jeep.

### ⭐⭐⭐⭐ Review
*by B***4 on 30 October 2024*

Sound quality is OK. For its size and price it's pretty good.

### ⭐ Review
*by A***W on 7 August 2024*

It seems to be good build quality and it has a year warranty but when I hooked my unit up I could not get any sound. I contacted tech support and they verified that my install was correct and got me to contact their warranty department. Waiting to see if they are going to send me a new unit or if I will have to return mine to be fixed. Update: they wanted me to send in my amp for repair which I ended up having to pay the $30 shipping fee for. Now my unit is in the USA and they informed me that they do not ship to Canada. They sent it to one of their distributors to ship to me and that was 4 months ago and I still have not received my amp back. I am $70 plus $30 for shipping into an amp that showed up defective and now I don’t even have it as a paper weight.

## Frequently Bought Together

- PRV Audio QS400.4 2 Ohm Mini Compact 4 Channel Car Audio Amplifier 4 x 100 Watts RMS at 2 Ohm - 400 Watt Amp Stereo 12 Volts Amp Class D Full Range Bridgeable
- PRV AUDIO Super Tweeters for Car Audio, 3.5 Inch Bullet Tweeter Pair 240 Watts, PRV Tweeter TW350Ti-4 Slim Titanium Bullet PRO Shallow Tweeters Speakers 4 Ohm - Ultra Slim Easy to Mount

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-02-04*