---
product_id: 23585085
title: "Helix H400X - 4-Channel Amplifier With Integrated Active Crossover"
brand: "helix"
price: "€ 11.83"
currency: EUR
in_stock: false
url: https://www.desertcart.ie/products/23585085-helix-h400x-4-channel-amplifier-with-integrated-active-crossover
store_origin: IE
region: Ireland
---

# 70W RMS x4, powerful clarity 4 channels, immersive sound 15Hz-20kHz, full frequency range Helix H400X - 4-Channel Amplifier With Integrated Active Crossover

**Brand:** helix
**Price:** € 11.83
**Availability:** ❌ Out of Stock

## Summary

> 🎧 Elevate your audio game with Helix H400X — power, precision, and protection in one sleek package.

## Quick Answers

- **What is this?** Helix H400X - 4-Channel Amplifier With Integrated Active Crossover by helix
- **How much does it cost?** € 11.83 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/23585085-helix-h400x-4-channel-amplifier-with-integrated-active-crossover)

## Best For

- helix enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Slim, surface-mount design packs 280W total output without sacrificing space or style.
- • **Smart Protection Tech:** Advanced circuits guard against overheating, voltage spikes, and speaker faults—keeping your system safe and sound.
- • **Gold-Plated Connections:** 24-carat solid terminals ensure ultra-stable, corrosion-free signal transfer for pristine audio.
- • **Integrated Active Crossover:** Processor-controlled crossover optimizes channel separation for crystal-clear, distortion-free performance.
- • **Precision German Engineering:** Crafted with premium German components for unmatched reliability and sonic purity.

## Overview

The Helix H400X is a 4-channel amplifier delivering 70 watts RMS per channel at 4 ohms, featuring a wide 15 Hz to 20 kHz frequency response. Built with premium German components and 24-carat gold-plated terminals, it offers robust power and ultra-stable connections in a compact, shallow housing. Integrated active crossover and smart protection circuits ensure optimized sound quality and system safety, making it a top-tier choice for audiophiles seeking professional-grade amplification.

## Description

Features · 24 carat gold-plated solid connection terminals suitable for 25mm2 (4 gauge) · Completely made from German produced components · Extremely stable amplifiers in an extraordinary shallow housing · Fastest drives for lowest possible THD · Processor controlled technology for optimized operation · Smart protection circuits for overheating, over-voltage, and under- voltage · Smart protection circuits for speaker short, low impedance, and connection fault

## Features

- Number of Channels……………………………..4
- Rated Power (RMS continuous Power)………..70 Watts RMS x 4 @ 4-Ohms
- Dynamic Power (PVC/PowerCube Measurement)…….140 Watts MAX x 4 @ 4-Ohms
- Frequency Response……………………………….15 Hz – 20 kHz

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00407N16E |
| Brand | Helix |
| Customer Reviews | 5.0 5.0 out of 5 stars (1) |
| Date First Available | August 8, 2012 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 6.33 pounds |
| Item model number | 02055H400X |
| Manufacturer | AudioTec Fischer |
| Material | Electronic Components |
| Mounting Type | Surface Mount |
| Number of Channels | 4 |
| Output Power | 280 Watts |
| Package Dimensions | 13.62 x 8.27 x 1.77 inches |
| Package Type Name | Compact Case/Blister Pack |

## Product Details

- **Brand:** Helix
- **Manufacturer:** AudioTec Fischer
- **Mounting Type:** Surface Mount
- **Number of Channels:** 4
- **Output Power:** 280 Watts

## Images

![Helix H400X - 4-Channel Amplifier With Integrated Active Crossover - Image 1](https://m.media-amazon.com/images/I/61yjWYrIohL.jpg)
![Helix H400X - 4-Channel Amplifier With Integrated Active Crossover - Image 2](https://m.media-amazon.com/images/I/61kND8MI75L.jpg)
![Helix H400X - 4-Channel Amplifier With Integrated Active Crossover - Image 3](https://m.media-amazon.com/images/I/61y4DLnfeSL.jpg)
![Helix H400X - 4-Channel Amplifier With Integrated Active Crossover - Image 4](https://m.media-amazon.com/images/I/61oaCpHmYjL.jpg)

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**Shop now:** [https://www.desertcart.ie/products/23585085-helix-h400x-4-channel-amplifier-with-integrated-active-crossover](https://www.desertcart.ie/products/23585085-helix-h400x-4-channel-amplifier-with-integrated-active-crossover)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-18*