---
product_id: 630068106
title: "RSM4.1200D, Compact Class-D Subwoofer Amplifier, 1,200 Watts Small Class D 4 Channel Amplifier, 220 Watts RMS 2 Channel 4 Ohms"
brand: "soundstream"
price: "₨126151"
currency: LKR
in_stock: true
reviews_count: 5
category: "Soundstream"
url: https://www.desertcart.lk/products/630068106-rsm4-1200d-compact-class-d-subwoofer-amplifier-1-200-watts
store_origin: LK
region: Sri Lanka
---

# 1200W max power punch Compact 3.75"W x 1.75"H x 7"L footprint 4-channel with variable high/low-pass filters RSM4.1200D, Compact Class-D Subwoofer Amplifier, 1,200 Watts Small Class D 4 Channel Amplifier, 220 Watts RMS 2 Channel 4 Ohms

**Brand:** soundstream
**Price:** ₨126151
**Availability:** ✅ In Stock

## Summary

> 🔊 Small Amp, Big Impact — Power Your Ride Like a Pro!

## Quick Answers

- **What is this?** RSM4.1200D, Compact Class-D Subwoofer Amplifier, 1,200 Watts Small Class D 4 Channel Amplifier, 220 Watts RMS 2 Channel 4 Ohms by soundstream
- **How much does it cost?** ₨126151 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/630068106-rsm4-1200d-compact-class-d-subwoofer-amplifier-1-200-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

- • **Plug & Play Simplicity:** Automatic Hi-Level Signal Sensing means no remote wire hassle—just seamless turn-on with factory radios.
- • **Tailored Sound Control:** Variable high- and low-pass filters (35-250 Hz) let you customize front and rear channels for perfect audio balance.
- • **Built to Last & Perform:** Hybrid aluminum alloy heatsink ensures optimal heat dissipation for reliable, long-lasting power delivery.
- • **Ultra-Compact, Ultra-Cool:** Small footprint and 30A fuse protection make installation easy and safe, fitting effortlessly into any vehicle setup.
- • **Powerhouse in a Pint-Sized Package:** Delivers a massive 1200 watts of clean, efficient Class-D amplification without hogging space.

## Overview

The Soundstream RSM4.1200D is a compact yet powerful 4-channel Class-D amplifier delivering up to 1200 watts max output. Designed with advanced variable high- and low-pass filters, automatic signal sensing turn-on, and a durable aluminum heatsink, it offers professional-grade sound customization and efficiency in a sleek, space-saving chassis. Perfect for millennial professionals seeking high-performance audio with minimal installation fuss and maximum style.

## Description

Reserve Micro amp line is electrifying news for the new exclusive Soundstream Reserve dealer only series. Two available monoblocks and one important four-channel solution can help build these microamps to be a solution to almost any application. Don’t let these pint-sized monsters fool you. The most modern and greatest of Class-D full range technology allows us to pack 10 pounds of KICK-ASS in the 2-pound chassis. Once regarded as “dirty power,” Class-D’s stable performance, thanks to high power capability, maximum efficiencies, and low tolerance components, rivals traditional full-range competitors. Minimal power requirements, ultra-micro footprint, unbelievable sound worth, and easy install make Reserve Micro amplifiers great for any application. Soundstream RSM technology allows this compact amp to produce big power with less current draw from your vehicle charging or electrical system. High and low pass filters adapt the amp to the job at hand, whether it’s powering a nice set of component speakers or a couple of subwoofers. Are you using an original or factory radio? No problem, these amplifiers are equipped with an Automatic Hi-Level Signal Sensing Turn-On. There is no need to run a remote wire turn on; this amplifier will automatically detect the sound signal and turn on and off the amplifier. (Hi-Level Input only)

Review: Very good sound
Review: Great sound for a small amp, good for mids and highs or even 6x9s

## Features

- 🚗Product Higlights: Class-D Amplifier Technology 4-channel Premium Amplifier. Front and Rear Channels with variable high- and low-pass filters (35-250 Hz, 12 dB/octave)
- 🚗Basic Features: Equipped with RCA and Speaker-Level inputs. 30A Fuse rating integrated. Standard 2-ohm Stereo & 4-ohm Bridged Impedance Stability. Small footprint with dimensions of 3.75″W x 1.75″H x 7″L
- 🚗More Features: Equipped with Automatic Turn-On Hi-Level Signal Sensing for Direct Short, Thermal, & Overload Circuits Protection. Amplifier comes in Hybrid Aluminum Alloy Heatsink for Optimum Dissipation. 250mV – 8V High-Level Speaker Input or Low-Level RCA Input
- 🚗Latest Technology: The most modern and greatest of Class-D full range technology allows us to pack 10 pounds of KICK-ASS in the 2-pound chassis. Once regarded as “dirty power,” Class-D’s stable performance, thanks to high power capability, maximum efficiencies, and low tolerance components
- 🚗High Level Signal Sensing: Are you using an original or factory radio? No problem, these amplifiers are equipped with an Automatic Hi-Level Signal Sensing Turn-On. There is no need to run a remote wire turn on; this amplifier will automatically detect the sound signal and turn on and off the amplifier. (Hi-Level Input only)
- 🚗Inside the Box: A 4-Channel Amplifier, Owners Manual and (2) 8″ Line level input harnesses

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B7CCP72T |
| Best Sellers Rank | 279,160 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 139 in Car Multichannel Amplifiers |
| Brand | Soundstream |
| Customer Reviews | 4.2 4.2 out of 5 stars (88) |
| Item Dimensions | 17.8 x 9.5 x 4.4 centimetres |
| Manufacturer | Soundstream |
| Material | Aluminum |
| Maximum Supply Voltage | 8 Volts |
| Model Number | RSM4-1200D |
| Mounting Type | Surface Mount |
| Number of Channels | 4 |
| Output Power | 1200 Watts |
| Package Type Name | Box |
| Specification Met | FCC |
| UPC | 709483061118 |
| Unit Count | 1.0 Count |
| Voltage | 8 Volts |

## Product Details

- **Item dimensions L x W x H:** 17.8 x 9.5 x 4.4 centimetres
- **Manufacturer:** Soundstream
- **Maximum supply voltage:** 8 Volts
- **Mounting type:** Surface Mount
- **Voltage:** 8 Volts

## Images

![RSM4.1200D, Compact Class-D Subwoofer Amplifier, 1,200 Watts Small Class D 4 Channel Amplifier, 220 Watts RMS 2 Channel 4 Ohms - Image 1](https://m.media-amazon.com/images/I/61jVg4EBZlL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by D***S on 19 February 2026*

Very good sound

### ⭐⭐⭐⭐ Review
*by A***W on 31 December 2025*

Great sound for a small amp, good for mids and highs or even 6x9s

### ⭐⭐⭐⭐⭐ Review
*by R***N on 14 March 2024*

Some of these other reviews are ridiculous. They’re expecting way too much for the size and cost of this amplifier. Done correctly. This amplifier will play nice and loud in most vehicles. it’s not going to win any awards for over-the-top sound quality but it doesn’t really really good job. The adjustments to block bass and set levels are easy to set and reasonably accurate. If you are looking for an amp to drive some middle to higher end speakers in a smaller vehicle, this amp is a great purchase. I am driving to 6 1/2 inch woofers and 1 inch tweeters on their own crossover network on channels, one and two. Channels three and four are bridged to run 2-8 inch JLAudio subwoofers. It hits hard and will play all day without distortion. Thanks Soundstream!

## Frequently Bought Together

- SOUNSTREAM RSM4.1200D Class D 4-Channel Car Amplifier – 1200W Car Audio Amp with Automatic Hi-Level Signal Sensing & RCA Inputs
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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-05-24*