--- 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: "€ 307.36" currency: EUR in_stock: true reviews_count: 8 category: "Soundstream" url: https://www.desertcart.gr/products/534126237-rsm1-4000d-compact-class-d-subwoofer-amplifier-4-000-watts store_origin: GR region: Greece --- # 4000W peak power 1200W RMS @ 1Ω stable Hybrid aluminum heatsink 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:** € 307.36 **Availability:** ✅ In Stock ## Summary > 🎵 Small amp, colossal bass—own the soundscape wherever you drive! ## 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?** € 307.36 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/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 - • **Compact Powerhouse:** Delivers massive 4000W peak in a sleek 9x3.75x1.75 inch frame—fits anywhere, no storage sacrifice. - • **Rock-Solid Stability:** 1-ohm stable monoblock design ensures consistent, distortion-free bass even under heavy load. - • **Precision Bass Control:** Variable low-pass (35-250Hz), subsonic filters (10-50Hz), and 0-12dB bass boost for tailored sound. - • **Plug & Play Convenience:** Includes wired dash bass knob, RCA & speaker-level inputs, plus automatic turn-on for seamless integration. - • **Smart Thermal Management:** Hybrid aluminum alloy heatsink plus overload, short, and thermal protection keeps your amp cool and safe. ## Overview The Soundstream RSM1.4000D is a compact Class-D monoblock amplifier engineered for car audio enthusiasts craving powerful, precise bass. With 4000 watts peak and 1200 watts RMS at 1 ohm stability, it packs serious punch in a space-saving design. Advanced bass tuning controls, robust thermal protection, and versatile input options make it a top-tier choice for professional-grade mobile sound systems. ## Description Product description Soundstream Reserve RSM1.4000D is a compact Class D Car Amplifier that delivers 1 Ohm Power The Reserve Micro car amp line is electrifying news for any car audio enthusiast looking for brute power in smaller applications. The RSM1.4000D is one of two available monoblocks and also available is one four-channel solution. 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. Don’t let these pint-sized monsters fool you. The greatest of Class-D full range technology allows us to pack 10 pounds of POWER in a 2-pound chassis. Once regarded as “dirty power” today Class-D’s stable performance now rivals traditional full-range competitors with high power capability, maximum efficiencies, and low tolerance components. Minimal power requirements, ultra-micro footprint, unbelievable sound, and easy install make Reserve Micro amplifiers great for any application. Compact Car Amplifier is Easily Hidden Away The small footprints also words great for motorcycle and ATV/UTV applications. You can practically use this monoblock amplifier anywhere space is limited. This car amp will surprise you with the sub power it delivers. Reserve Micro Series Don’t let these pint-sized monsters fool you. The most modern and greatest of Class-D full range technology. Minimal power requirements, ultra-micro footprint, unbelievable sound worth, and easy install make Reserve Micro amplifiers great for any application. Frequency Control 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 Accessible Connectors Wired Dash Bass Knob RCA and Speaker-Level inputs Automatic Turn-On Sensing Hybrid Aluminum Alloy 250mV – 8V High-Level Speaker Input or Low-Level RCA Input Small but Powerful Dimensions: 3.75″ x 1.75″ x 9″ Max Power4,000 Watts - RMS Power @ 4Ω600W x 1 - RMS Power @ 2Ω850W x 1 - RMS Power @ 1Ω1,200W x 1 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! Review: Pleasantly surprised - 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. ## 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 | #67,711 in Electronics ( See Top 100 in Electronics ) #128 in Car Mono Amplifiers | | Brand | Soundstream | | Built-In Media | Manual, Bass Knob, Input Harness, Spare Fuses | | Customer Reviews | 4.5 out of 5 stars 43 Reviews | | Item Weight | 1.54 Kilograms | | Manufacturer | Soundstream | | Mfr Part Number | RSM1-4000D | | Model Number | RSM1.4000D | | Unit Count | 1.0 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) ![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 2](https://m.media-amazon.com/images/I/91bu0-le53L.jpg) ![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 3](https://m.media-amazon.com/images/I/71LPaS66PDL.jpg) ![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 4](https://m.media-amazon.com/images/I/81yijN8L3tL.jpg) ![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 5](https://m.media-amazon.com/images/I/617TtQtJlWL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐⭐ Ford Edge with stock location 8”pioneer *by B***. on April 8, 2025* I would say this amp delivers. Once the gain and other settings are set properly it puts out plenty of power. Setup: Ford Edge stock woofer location with a pioneer shallow mount 8”. Not a lot of room for an amp but this one fits below the rear lift gate latch. More than enough power for my needs. And saves my whole cargo area. ## 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 - Skar Audio 8 Gauge CCA Complete Amplifier Installation Wiring Kit, SKAR8MANL-CCA - Kicker 46KISLOC2 K-Series Stereo Line-Output Converter w/Remote Turn-On Output --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/534126237-rsm1-4000d-compact-class-d-subwoofer-amplifier-4-000-watts](https://www.desertcart.gr/products/534126237-rsm1-4000d-compact-class-d-subwoofer-amplifier-4-000-watts) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-06-03*