---
product_id: 534126237
title: "RSM1.4000D, Compact Class-D Subwoofer Amplifier, 4,000 Watts Small Monoblock Amplifier, 1,200 Watts RMS 1 Channel 1 Ohm Stable Car Amp"
brand: "soundstream"
price: "Rp6938825"
currency: IDR
in_stock: true
reviews_count: 8
category: "Soundstream"
url: https://www.desertcart.id/products/534126237-rsm1-4000d-compact-class-d-subwoofer-amplifier-4-000-watts
store_origin: ID
region: Indonesia
---

# 4,000W peak power Compact 3.75"W x 9"L size 1,200W RMS @ 1Ω stable RSM1.4000D, Compact Class-D Subwoofer Amplifier, 4,000 Watts Small Monoblock Amplifier, 1,200 Watts RMS 1 Channel 1 Ohm Stable Car Amp

**Brand:** soundstream
**Price:** Rp6938825
**Availability:** ✅ In Stock

## Summary

> 🔊 Compact Powerhouse: Big Bass, Small Footprint, Zero Compromise!

## Quick Answers

- **What is this?** RSM1.4000D, Compact Class-D Subwoofer Amplifier, 4,000 Watts Small Monoblock Amplifier, 1,200 Watts RMS 1 Channel 1 Ohm Stable Car Amp by soundstream
- **How much does it cost?** Rp6938825 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/534126237-rsm1-4000d-compact-class-d-subwoofer-amplifier-4-000-watts)

## 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

- • **Heat? What Heat?:** Hybrid aluminum alloy heatsink ensures cool operation even under pressure.
- • **Powerhouse in a Pocket:** Delivers thunderous 4,000 watts peak power without sacrificing space.
- • **Precision Bass Control:** Variable low-pass and subsonic filters plus 12dB bass boost for tailored sound.
- • **Built to Last & Protect:** Automatic turn-on, short/thermal/overload protection for worry-free, long-lasting performance.
- • **Plug & Play Convenience:** Includes wired dash bass knob and versatile RCA & speaker-level inputs for seamless setup.

## Overview

The Soundstream RSM1.4000D is a compact Class-D monoblock amplifier engineered for car audio enthusiasts who demand high power in a small package. Rated at 1,200 watts RMS at 1 ohm and capable of 4,000 watts peak output, it features advanced bass tuning controls, robust thermal management, and multiple input options. Designed for easy installation with a wired remote bass knob and built-in protections, this amp delivers premium sound performance without sacrificing space or reliability.

## Description

desertcart.com: Soundstream RSM1.4000D, Compact Class-D Subwoofer Amplifier, 4,000 Watts Small Monoblock Amplifier, 1,200 Watts RMS 1 Channel 1 Ohm Stable Car Amp : Electronics

Review: Astonished - Absolutely stunning that such a small sized amplifier is able to produce good quality power. I have it running 2 American Bass XFL1544 15" Subwoofers at 1 ohm and doesn't have any issues. Pushes them good too! Good job soundstream !! Definitely would tell anyone to buy. Easy installation, very small and doesn't get hot . Excellent value for a high power amplifier
Review: Small amp, lots of power! - I have this amp wired to a 10” DVC sub @2ohms and it sounds great! I needed an amp that would fit under my seat because I didn’t want to sacrifice any storage space in my van for an amplifier. This amp fit the bill perfectly! One of my concerns was heat because the inside of my van gets very hot in the summer, but the amp has had no issues at all. Actual output is lower than the rated output, which is typical with many amps, but I would definitely recommend this amp to anyone looking for an affordable powerful amp in a small package!

## Features

- Product Highlights: Reserve series 1-channel amplifier with class-d technology. Compact subwoofer amp with a single monoblock channel with the following specs, variable low-pass filters (35-250 Hz, 12 dB/octave) | variable subsonic filters (10-50 Hz, 12 dB/octave) | variable bass boost (0-12 dB, at 45 Hz) | Frequency Response 10-250 Hz
- Other Features: This car stereo amplifier comes with a wired dash bass knob, RCA and Speaker-Level inputs and a Fuse rating of 30A x 3. The dimensions as follows 3.75″W x 1.75″H x 9″L. Power rating listed at 1-ohm Minimum Impedance monoblock operation
- More Features: Compact amplifier is equipped with automatic turn-on, hi-level signal sensing and direct short, thermal, and overload circuits protection. This bass amplifier comes in a hybrid aluminum alloy heatsink for optimum dissipation. It also has 250mV – 8V high-level speaker input or low-level RCA input
- Inside the Box: Inside you will find a 1-Channel amplifier, the owners manual, spare 30A fuses, (2) 8″ line level input harnesses and wired remote bass knob w/ 18ft cable
- Soundstream Reserve Series: Products specifically developed to provide consumers with today’s preferred features such as; Source units with various app ready solutions, premium digital amplifiers, and subwoofers to make your hair stand up. Quality is continuously in our DNA; at Soundstream, we wanted to fully commit a line of products designed specifically for our most knowledgeable dealers to bring detailed information, continuous support, along with features you’ll LOVE.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B7CDY6YH |
| Best Sellers Rank | #144,996 in Electronics ( See Top 100 in Electronics ) #279 in Car Mono Amplifiers |
| Brand | Soundstream |
| Built-In Media | Manual, Bass Knob, Input Harness, Spare Fuses |
| Customer Reviews | 4.4 out of 5 stars 46 Reviews |
| Item Weight | 1.54 kg |
| Manufacturer | Soundstream |
| Mfr Part Number | RSM1-4000D |
| Model Number | RSM1.4000D |
| Number of Items | 1 |
| Unit Count | 1 Count |

## Product Details

- **Item dimensions L x W x H:** 9 x 3.75 x 1.75 inches
- **Manufacturer:** Soundstream
- **Maximum Supply Voltage:** 14.4 Volts
- **Mounting Type:** Surface Mount
- **Voltage:** 8 Volts

## Images

![RSM1.4000D, Compact Class-D Subwoofer Amplifier, 4,000 Watts Small Monoblock Amplifier, 1,200 Watts RMS 1 Channel 1 Ohm Stable Car Amp - Image 1](https://m.media-amazon.com/images/I/51jg4rxQvvL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Astonished
*by T***M on May 23, 2026*

Absolutely stunning that such a small sized amplifier is able to produce good quality power. I have it running 2 American Bass XFL1544 15" Subwoofers at 1 ohm and doesn't have any issues. Pushes them good too! Good job soundstream !! Definitely would tell anyone to buy. Easy installation, very small and doesn't get hot . Excellent value for a high power amplifier

### ⭐⭐⭐⭐⭐ Small amp, lots of power!
*by D***K on August 2, 2024*

I have this amp wired to a 10” DVC sub @2ohms and it sounds great! I needed an amp that would fit under my seat because I didn’t want to sacrifice any storage space in my van for an amplifier. This amp fit the bill perfectly! One of my concerns was heat because the inside of my van gets very hot in the summer, but the amp has had no issues at all. Actual output is lower than the rated output, which is typical with many amps, but I would definitely recommend this amp to anyone looking for an affordable powerful amp in a small package!

### ⭐⭐⭐⭐⭐ Pleasantly surprised
*by S***C on May 12, 2025*

Installed this amp to run two CT Sounds 10 inch subs. Ran with a Soundstream bass processor. I purchased because of the size and good reviews. This little amp delivers. I was actually surprised how hard the subs hit. Easy to install using 4-gauge power and ground. Running the bass boost at 3/4 percent and couldn't be happier.

## Frequently Bought Together

- Soundstream RSM1.4000D, Compact Class-D Subwoofer Amplifier, 4,000 Watts Small Monoblock Amplifier, 1,200 Watts RMS 1 Channel 1 Ohm Stable Car Amp
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**Shop now:** [https://www.desertcart.id/products/534126237-rsm1-4000d-compact-class-d-subwoofer-amplifier-4-000-watts](https://www.desertcart.id/products/534126237-rsm1-4000d-compact-class-d-subwoofer-amplifier-4-000-watts)

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-08-19*