---
product_id: 354224069
title: "CT Sounds CT-400.1D Compact Class D Car Audio Monoblock Amplifier, 400 Watts RMS"
brand: "ct sounds"
price: "€ 304.50"
currency: EUR
in_stock: true
reviews_count: 5
category: "Ct Sounds"
url: https://www.desertcart.hr/products/354224069-ct-sounds-ct-400-1d-compact-class-d-car-audio
store_origin: HR
region: Croatia
---

# 400W RMS @ 1Ω - Powerhouse punch 4-way protection - Safety first MOSFET cooling tech - Runs cool under pressure CT Sounds CT-400.1D Compact Class D Car Audio Monoblock Amplifier, 400 Watts RMS

**Brand:** ct sounds
**Price:** € 304.50
**Availability:** ✅ In Stock

## Summary

> 🚗💥 Small amp, massive impact – unleash your bass beast!

## Quick Answers

- **What is this?** CT Sounds CT-400.1D Compact Class D Car Audio Monoblock Amplifier, 400 Watts RMS by ct sounds
- **How much does it cost?** € 304.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/354224069-ct-sounds-ct-400-1d-compact-class-d-car-audio)

## Best For

- ct sounds enthusiasts

## Why This Product

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

## Key Features

- • **Cool Under Fire:** Advanced MOSFET and heat dissipation keep your amp chill during marathon sessions
- • **Built to Protect:** Sleep easy with high/low voltage, overcurrent, and thermal safeguards
- • **Compact Powerhouse:** Fits anywhere, pounds everywhere – 400W RMS in a sleek chassis
- • **Efficient Energy Use:** Maximize your ride’s electrical system with Class D efficiency
- • **Tailored Bass Control:** Adjust LPF, subsonic filter, and bass boost for your perfect sound signature

## Overview

The CT Sounds CT-400.1D is a compact Class D monoblock amplifier delivering up to 400 watts RMS at 1-ohm load, engineered for high efficiency and cool operation. Its small footprint fits any vehicle, while advanced protection circuitry ensures durability. With customizable bass controls and a robust MOSFET power supply, it’s designed to power subwoofers with clean, punchy sound without draining your battery or overheating.

## Description

CT Sounds engineered the CT-400.1D Compact Class D Monoblock Car Amplifier for anyone in need of a powerhouse amplifier that fits just about anywhere in your vehicle and wonât destroy your wallet. If you want a 400-watt amplifier that absolutely pounds and delivers clean power to your subwoofers then look no further.Â This 1-ohm stable monoblock amplifier features a Low Pass Filter (LPF), Subsonic Filter, and Bass Boost so you can get the exact sound you are looking for out of your amplifier. The MOSFET power supply and proprietary heat dissipation design will ensure that the amplifier runs cool for even the most demanding playlists. Furthermore, the compact chassis and small footprint makes it easy to install in any car audio application.Â You can sleep easy at night knowing your subwoofer amplifier is protected from damage due to the amplifier's uniquely engineered protection circuitry featuring high voltage, low voltage, over current, and high-temperature protection. Quick Facts: RMS Power: 1Î© @ 14.4v 400 Watts x 1-Channel RMS Power: 2Î© @ 14.4v 300 Watts x 1-Channel RMS Power: 4Î© @ 14.4v 150 Watts x 1-Channel Power & Ground Input Size: 4 Gauge Speaker Input Size: 12 Gauge Technical Specifications: Monoblock Class D Amplifier Strappable: Yes; Signal Output is Master RMS Power at 1 Ohm: 400 Watts x 1-Ch (14.4v) RMS Power at 2 Ohms: 300 Watts x 1-Ch (14.4v) RMS Power at 4 Ohms: 150 Watts x 1-Ch (14.4v) Recommended External Fuse: 50A Subsonic filter: 0 - 50Hz Frequency response: 20 Hz to 320 Hz LPF: 40-180Hz S/N: 93dB Bass Boost: 0 to 12 dB Bass Boost Frequency: 30-80Hz Input impedance: 22k ohms Operation voltage: DC 9-16V Minimum speaker impedance: 1ohm Remote volume Controller Continuously-Variable Input Gain Control Remote Turn-on/Turn-off circuit MOSFET Pulse Width Modulated Power Supply Soft Turn-on Circuit Thermal and Speaker Short Protection Circuit LED Power and Protection Indicators Mounting Dimensions: 8.38" (Length) * 5.625" (Width) * 2.187" (Height) AMP DYNO VIDEO

Review: Great amp at a great price
Review: Highly efficient

## Features

- Car audio amplifier with 400 watts RMS power at 1-ohm load (14.4v); 300 watts RMS at 2-ohm load (14.4v); 150 watts RMS at 4-ohm load (14.4v); Frequency response: 0 to 320 Hz (Bass Knob Included)
- Small footprint and compact chassis makes this mono amplifier easy to install in any vehicle or car audio application; but don’t let the size fool you, this 400 watt amplifier absolutely pounds
- Engineered to be the most efficient car monoblock amplifier in its class so that you can get the most out of your vehicle’s electrical system
- MOSFET pulse width modulated power supply and proprietary heat dissipation design will ensure the amplifier for car subwoofers runs cool for even the most demanding playlists
- 4-way protection circuitry features high voltage, low voltage, over current, and high-temperature protection; sleep easy at night knowing your class d amplifier car audio is protected

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0971NG7VH |
| Brand | CT Sounds |
| Brand Name | CT Sounds |
| Customer Reviews | 4.4 out of 5 stars 131 Reviews |
| Manufacturer | CT Sounds |
| Material Type | metal and plastic |
| Maximum Supply Voltage | 14.4 Volts |
| Maximum supply voltage | 14.4 Volts |
| Minimum Supply Voltage | 8.8 Volts (DC) |
| Minimum supply voltage | 8.8 Volts (DC) |
| Model | CT-400.1D |
| Mounting Type | Surface Mount |
| Mounting type | Surface Mount |
| Number of Channels | 1 |
| Output Power | 400 Watts |
| Package Type Name | box |
| Specification Met | CE, CSA, FCC, RoHS, WEEE |
| UPC | 850021258818 |
| Voltage | 14.4 Volts |

## Product Details

- **Manufacturer:** CT Sounds
- **Maximum supply voltage:** 14.4 Volts
- **Minimum supply voltage:** 8.8 Volts (DC)
- **Mounting type:** Surface Mount
- **Voltage:** 14.4 Volts

## Images

![CT Sounds CT-400.1D Compact Class D Car Audio Monoblock Amplifier, 400 Watts RMS - Image 1](https://m.media-amazon.com/images/I/71UsWc0FowL.jpg)

## Questions & Answers

**Q: Apparently this amp doesn't work in the winter time or an early spring or late fall that's kind of weird?**
A: My son runs this amp all year long and has never had a problem. He is only running 2-10's, so maybe that's why. Great amp so far

**Q: Would this work for a 15 inch kicker subwoofer?**
A: That would depend on the specs of the sub( check rms wattage with oh resistance ratings). As long as it falls less than or equal too the ratings of the amp( check the manual online for it's ratings). You could use a high wattage sub 
with it but it won't have as much output vs a wattage matched one.

**Q: Could this amp work for the ct sound strato 8**
A: It will work as long as you don’t try to overpower it. Typically you’ll want to go with a higher rated amp than needed for subwoofer RMS

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great amp at a great price
*by B***N on 15 August 2025*



### ⭐⭐⭐⭐⭐ Highly efficient
*by P***E on 6 December 2025*



### ⭐⭐⭐⭐⭐ Small but powerful!
*by T***R on 25 April 2025*



## Frequently Bought Together

- CT Sounds CT-400.1D Compact Class D Car Audio Monoblock Amplifier, 400 Watts RMS
- CT Sounds 4 Gauge CCA Complete Amp Wiring Install Kit, AMPKIT-4GA-PRO
- CT Sounds Single 8” 800W Loaded Tropo Series Ported Car Subwoofer Box - TROPO-1X8D2

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-21*