---
product_id: 267148030
title: "SM4.1000D 1000w Max 4 Channel Stealth Series Marine Grade Class D Amplifier"
brand: "soundstream"
price: "€ 281.88"
currency: EUR
in_stock: true
reviews_count: 5
category: "Soundstream"
url: https://www.desertcart.gr/products/267148030-sm4-1000d-1000w-max-4-channel-stealth-series-marine-grade
store_origin: GR
region: Greece
---

# 1000W peak power max Hybrid aluminum heatsink Military-grade SMT PCB SM4.1000D 1000w Max 4 Channel Stealth Series Marine Grade Class D Amplifier

**Brand:** soundstream
**Price:** € 281.88
**Availability:** ✅ In Stock

## Summary

> 🌊 Amplify your marine adventures with stealth power and precision sound!

## Quick Answers

- **What is this?** SM4.1000D 1000w Max 4 Channel Stealth Series Marine Grade Class D Amplifier by soundstream
- **How much does it cost?** € 281.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/267148030-sm4-1000d-1000w-max-4-channel-stealth-series-marine-grade)

## Best For

- soundstream enthusiasts

## Why This Product

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

## Key Features

- • **Rock-Solid Protection:** Integrated direct short, thermal, and overload circuits safeguard your investment.
- • **Precision Audio Control:** Variable crossover filter (35-250 Hz) with selectable HPF/LPF/full modes for tailored sound.
- • **Stay Cool Under Pressure:** Hybrid aluminum alloy heatsink optimizes heat dissipation for uninterrupted power.
- • **Built to Brave the Elements:** Military-grade SMT PCB ensures rugged, reliable performance in harsh marine environments.
- • **Power that Commands the Waves:** Delivers up to 125W x 4 channels at 2 ohms for crystal-clear marine sound.

## Overview

The SM4.1000D is a compact, marine-grade Class D amplifier delivering up to 1000W peak power across 4 channels. Featuring a military-grade SMT PCB and hybrid aluminum heatsink, it ensures durability and optimal thermal management. With variable crossover filters and built-in protection circuits, it offers customizable, reliable audio performance tailored for demanding marine environments.

## Description

Stealth Series class d channel amplifier. Direct short, thermal, & overload circuits protect amplifier. Variable Crossover filter: 35 - 250 Hz, 12 db/octave. Selectable Crossover mode: hpf / full / lpf. LED power (Green) and protect (Red) indicators.

Review: What a mixed bag of reviews for an item from a reputable company. I guess you never know how someone wires up an amp or how they run it. I use to buy soundstream back in the early 2000's and never had a single issue with them. Bought this to replace my old HOGTUNES amp on my 09 Harley Davidson Ultra Classic. 4 6ohm speakers (hogtunes) wired in parallel to the front channels (3ohms). Used the High Level Inputs and removed the additional ground wire from the inputs because it was giving electrical feedback. All in all great little amp. Much higher and crisper sound...will definitely need to swap out the speakers soon as I'm sure they'll be put to work from the amp. At this price, and this size, it's really hard to beat.
Review: First one arrived and installed, no audio output, wired my other amplifier I have to same wiring and works just fine, we’ll see if the replacement has any issues

## Features

- Rms power Rating: 4 ohms: 90 Watts x 4 chan. / 2 ohms: 125 Watts x 4 chan. / 4 ohms, bridged: 250 Watts x 2 chan.
- Peak power output: 1000 Watts
- Mosfet power Supply w/ audiophile grade irtm Transistors
- Military grade smt pcb maintains dynamic performance
- Hybrid aluminum alloy heatsink for optimum dissipation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material Type | water-resistant material |
| Item Dimensions | 7.5 x 3.88 x 1.5 inches |
| Number of Channels | 4 |
| Output Power | 9E+1 Watts |
| Mounting Type | Boat Mount |
| Voltage | 250 Volts |

## Product Details

- **Item dimensions L x W x H:** 19.1 x 9.9 x 3.8 centimeters
- **Voltage:** 250 Volts
- **Manufacturer:** Soundstream
- **Mounting type:** Surface Mount
- **Brand:** Soundstream

## Images

![SM4.1000D 1000w Max 4 Channel Stealth Series Marine Grade Class D Amplifier - Image 1](https://m.media-amazon.com/images/I/61Bg9WBFmpL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by F***P on 10 May 2021*

What a mixed bag of reviews for an item from a reputable company. I guess you never know how someone wires up an amp or how they run it. I use to buy soundstream back in the early 2000's and never had a single issue with them. Bought this to replace my old HOGTUNES amp on my 09 Harley Davidson Ultra Classic. 4 6ohm speakers (hogtunes) wired in parallel to the front channels (3ohms). Used the High Level Inputs and removed the additional ground wire from the inputs because it was giving electrical feedback. All in all great little amp. Much higher and crisper sound...will definitely need to swap out the speakers soon as I'm sure they'll be put to work from the amp. At this price, and this size, it's really hard to beat.

### ⭐⭐⭐⭐⭐ Review
*by A***A on 3 October 2024*

First one arrived and installed, no audio output, wired my other amplifier I have to same wiring and works just fine, we’ll see if the replacement has any issues

### ⭐⭐⭐⭐⭐ Review
*by P***O on 29 December 2025*

small compact lots of power

## Frequently Bought Together

- Soundstream SM4.10000D 1000W Max 4 Channel Stealth Series Marine Grade Class D Amplifier - SM4.1000D
- BOSS Audio Systems KIT2 8 Gauge Complete Car Amplifier Installation Wiring Kit with Power Cables, Ground Cables, Turn-On Wire, Speaker Wire, Terminals

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-05*