--- product_id: 806635713 title: "Facmogu ST-838 2.1 Channel Mini Amplifier, RMS 20Wx2 + 40W Sub Output" brand: "facmogu" price: "€ 126.57" currency: EUR in_stock: true reviews_count: 5 category: "Facmogu" url: https://www.desertcart.hr/products/806635713-facmogu-st-838-2-1-channel-mini-amplifier-rms-20wx2 store_origin: HR region: Croatia --- # 80W total power output Universal RCA & 3.5mm AUX inputs Independent bass, treble & sub volume control Facmogu ST-838 2.1 Channel Mini Amplifier, RMS 20Wx2 + 40W Sub Output **Brand:** facmogu **Price:** € 126.57 **Availability:** ✅ In Stock ## Summary > 🎵 Elevate your audio game with power and precision in a pocket-sized amp! ## Quick Answers - **What is this?** Facmogu ST-838 2.1 Channel Mini Amplifier, RMS 20Wx2 + 40W Sub Output by facmogu - **How much does it cost?** € 126.57 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/806635713-facmogu-st-838-2-1-channel-mini-amplifier-rms-20wx2) ## Best For - facmogu enthusiasts ## Why This Product - Trusted facmogu brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek & Portable:** Lightweight aluminum design fits effortlessly in cars, boats, or home setups. - • **Compact Powerhouse:** Mini size packs a mighty 80W punch for immersive sound anywhere. - • **Ready Out of the Box:** Includes premium 12V 3A adapter—no extra purchases needed, just pure sound. - • **Seamless Connectivity:** Plug into phones, TVs, or computers with versatile RCA and AUX inputs. - • **Tailored Sound Control:** Separate bass, treble, and subwoofer knobs let you craft your perfect audio vibe. ## Overview The Facmogu ST-838 is a sleek, silver 2.1 channel Class D amplifier delivering 20W per stereo channel plus 40W to a subwoofer, totaling 80W RMS. Its compact aluminum alloy build (5.9x3.6x1.4 inches) fits easily in cars, marine, or home audio setups. Featuring independent bass, treble, and subwoofer volume controls, plus RCA and 3.5mm AUX inputs, it offers versatile connectivity and finely tuned sound customization. The package includes a 12V 3A power adapter, ensuring immediate use with minimal setup. Ideal for millennials seeking powerful, customizable sound in a stylish, portable form factor. ## Description Product Specifications Color: Silver Rated Voltage: 12V Rated Power: 20wx2 + 40W Rated Frequency: 20-20KHz Resolution: 47K Distortion Rate: 0.4% SNR: 80dB Impedance: 4-8 Ω Material: aluminum alloy Receiving Mode: audio input Dimension: 5.9x3.6x1.4" / 15x9.1x3.7cm Package Included 1 x Amplifier 1 x 12V 3A Power Adapter 1 x User Manual Review: I’m impressed - I’m not easily impressed, but I am really impressed with the sound quality of this amplifier. I have it hooked up to two 12” full range and two 5” speakers. It will fill a large room with plenty of volume. Very little distortion at full volume. This is not the type of amplifier that you need if you’re looking for a lot of thump, but it will push your midrange and tweeters. Bass and treble adjustments do have a good range. It does have a separate output for a bass sub, but not anything to brag about. Might come in handy if you had a powered sub to hook up to it. Would also work well with a 12 volt cigarette adapter. EDIT: I hooked it up to an old Sony Xplod 10” sub and it has some thump! Review: Amplificador 2.1 - Un muy buen producto, lo recomiendo ampliamente, gracias. ## Features - 【Mini Size but Powerful】-- Don't be fooled by its size, it’ll give your entertainment system a serious boost. With 2.1 channel output RMS 20W×2(L/R)+40W(subwoofer), which can drive most home/car/marine/outdoor passive speakers and subwoofers, and with excellent sound. Low distortion, acoustically accurate reproduction of music, which sounds smooth and full. - 【Bass & Treble & Sub Vol Control】-- Designed with main volume, treble and bass control knobs, Which for more delicate adjustment of the sound, much fun and high playability. Besides main volume, treble and bass control, sub volume control is specially designed. They allow you to control the volume of passive Subwoofer and two passive speakers separately as you wish. - 【RCA & AUX Inputs】-- With standard stereo RCA and 3.5mm AUX inputs, can be compatible with various devices, such as mobile phone, MP3, MP4, CD player, TV, computer etc. Just enjoy your music the way you want to. Besides, there's a little blue woofer alert that turns on when the woofer is beating. - 【Portable & Convenient】-- Mini Size: 5.9x3.6x1.4" / 15x9.1x3.7cm, amplifier weight: 0.66 pounds/ 0.3kg. Compact design with exquisite appearance, matt silver case looks fashionable and durable, unique structure design easy to be installed in car, marine, RV, golf cart or home, which save space and convenient to operate. - 【Great Value Choice】-- The package comes with a Facmogu DC 12V 3A adapter valued at over $10, which makes purchasing this ST-838 amplifier a very good deal. You don't have to find a adapter with 5.5x2.5mm plug in your pile of old power adapters or you don't have to pay for another one. Besides, just enjoy peace of mind with 12 months guarantee period & lifetime product support & excellent customer service. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08L6KYTJC | | Brand Name | Facmogu | | Customer Reviews | 4.1 4.1 out of 5 stars (344) | | Manufacturer | Mo-gu | | Material Type | Aluminum Alloy | | Maximum Supply Voltage | 12 Volts (DC) | | Minimum Supply Voltage | 11 Volts (DC) | | Model | A18224-MG-US | | Mounting Type | Surface Mount | | Number of Channels | 2 | | Output Power | 80 Watts | | Part Number | A18224-MG-US | | Specification Met | FCC | | Voltage | 12 Volts | ## Product Details - **Manufacturer:** Mo-gu - **Maximum supply voltage:** 12 Volts (DC) - **Minimum supply voltage:** 11 Volts (DC) - **Mounting type:** Surface Mount - **Voltage:** 12 Volts ## Images ![Facmogu ST-838 2.1 Channel Mini Amplifier, RMS 20Wx2 + 40W Sub Output - Image 1](https://m.media-amazon.com/images/I/61sgDLr3iHL.jpg) ## Questions & Answers **Q: How effective (or "good") is the Treble boost ? Have hearing problem, and need much more treble going to my speakers. Thanks** A: Not that good.Get a more powerful amp. **Q: How can this be a 20x2w + 40w (sub) = 80w amp if it only uses a 36 watt (12vx3a) power supply?** A: Those are likely max watts per channel assuming not all channels will run at max watts all at once. I think the stat you are looking for is RMS watts and that isnt listed **Q: Will this amp work with a pair of 20 watt 4 ohm speakers?** A: yes it will work and you have a bass hook up also if you want to use 2:1 2 speaker and 1sub woofer **Q: Can i connect a passive subwoofer to this .. or should it be an active subwoofer?** A: compatible with passive ... ## Customer Reviews ### ⭐⭐⭐⭐⭐ I’m impressed *by G***T on 5 February 2025* I’m not easily impressed, but I am really impressed with the sound quality of this amplifier. I have it hooked up to two 12” full range and two 5” speakers. It will fill a large room with plenty of volume. Very little distortion at full volume. This is not the type of amplifier that you need if you’re looking for a lot of thump, but it will push your midrange and tweeters. Bass and treble adjustments do have a good range. It does have a separate output for a bass sub, but not anything to brag about. Might come in handy if you had a powered sub to hook up to it. Would also work well with a 12 volt cigarette adapter. EDIT: I hooked it up to an old Sony Xplod 10” sub and it has some thump! ### ⭐⭐⭐⭐⭐ Amplificador 2.1 *by D***D on 22 April 2023* Un muy buen producto, lo recomiendo ampliamente, gracias. ### ⭐⭐⭐⭐⭐ lo uti que es *by C***N on 22 October 2021* tan chico y tan potente felix con este amplificador amplifica en serio muchas cracias amazon ## Frequently Bought Together - Facmogu ST-838 2.1CH Audio Power Amplifier, RMS 20Wx2+40W Class D Stereo Digital Audio Amp with Subwoofer Output, 80W Mini Subwoofer Amplifier Audio Stereo Bass Amp with DC12V Power Adapter - Silver - Dayton Audio TT25-8 Puck Tactile Transducer Mini Bass Shaker 8 Ohm - Dayton Audio BST-1 High Power Pro Tactile Bass Shaker 50 Watts RMS, 4 Ohms Impedance - Turn Any Surface into a Speaker System - Generates Subwoofer Lows --- ## 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.hr/products/806635713-facmogu-st-838-2-1-channel-mini-amplifier-rms-20wx2](https://www.desertcart.hr/products/806635713-facmogu-st-838-2-1-channel-mini-amplifier-rms-20wx2) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-29*