--- product_id: 475511029 title: "Class AB Amplifier, 2.1 Channel 80W+80W Stereo and120W Pure Bass 9-18V 4Ω Audio Amplifier Board" brand: "drok" price: "2382622₫" currency: VND in_stock: true reviews_count: 5 category: "Drok" url: https://www.desertcart.vn/products/475511029-class-ab-amplifier-2-1-channel-80w-80w-stereo-and120w store_origin: VN region: Vietnam --- # Max 2x80W stereo output 120W pure bass channel Multi-layer protection system Class AB Amplifier, 2.1 Channel 80W+80W Stereo and120W Pure Bass 9-18V 4Ω Audio Amplifier Board **Brand:** drok **Price:** 2382622₫ **Availability:** ✅ In Stock ## Summary > 🎶 Amplify your audio game with power and precision! ## Quick Answers - **What is this?** Class AB Amplifier, 2.1 Channel 80W+80W Stereo and120W Pure Bass 9-18V 4Ω Audio Amplifier Board by drok - **How much does it cost?** 2382622₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/475511029-class-ab-amplifier-2-1-channel-80w-80w-stereo-and120w) ## Best For - drok enthusiasts ## Why This Product - Trusted drok brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Noise-Free Audio:** Four 3300μF capacitors and vehicle-grade chip eliminate background noise. - • **Powerhouse Performance:** Delivers crisp 2x80W stereo and booming 120W bass for immersive sound. - • **Pro-Grade Connectivity:** Gold-plated inputs and flexible 3.5mm or terminal input options for premium signal clarity. - • **Robust Protection Suite:** Built-in safeguards against reverse polarity, short circuits, overcurrent, and overheating. - • **Versatile Voltage Range:** Operates seamlessly between 9V and 18V to fit diverse setups. ## Overview The DROK Class AB Amplifier is a compact yet powerful 2.1 channel audio board delivering up to 80W per stereo channel and 120W pure bass output. Designed for 9-18V power supplies and compatible with 2-8Ω speakers, it features advanced noise filtering, gold-plated inputs, and comprehensive protection mechanisms to ensure reliable, high-quality sound performance in professional and DIY audio setups. ## Description Parameter: Working Voltage: DC 9 - 18V Output Power: Max 2x80W stereo(18V/4Ω), 1x120W pure bass(18V/2Ω) Connecting: 2/4/6/8Ω speaker Input Method: 3.5mm audio input or 3P_2.54mm terminal input Protection: input anti reverse-connect protection, output short circuit protection, over current protection (OCP), over temperature protection (OTP). PCB Size: 72.36mm*66.65mm(length*wide) Overall Size(radiator included): 72.36mm*96mm*27mm Potentiometer Rotating Handle Opening: 7mm Installing Hole Spacing: 25.4mm*48.26mm(compatible for blue-tooth module spacing) Installing Hole Size: M3 Review: Don't expect much with all the positive reviews...you need to have good quality speakers and it can't pull 80w speakers also...as someone mentioned.... False marketing specs... Quality will be good with good dac and pre amp ...Ideal for 30w-40w speakers and 50 w subwoofer... Don't expect punchy bass .. for this price range it was a good one...I am using 18v 20A power supply. Review: This thing slaps, its great at 2 ohms at 80w rms but it does get really hot so add a fan or bigger heatsink. Also it is NOT bridged at the subwoofer output, it is only one channel and other 2 for mids, 3rd one is left unconnected. Im not sure why the left the 3rd channel unused, theres no traces going to it at all. It would have been better to have dual sub outputs to run 2 subs instead. The sound is also really good and it outputs full range and lowpass ## Features - Parameter --- Working Voltage: DC 9-18V, Output Power: Max 2x80W Stereo(18V/4Ω), 1x120W Pure Bass(18V/2Ω), 2.1 Channels Recommended 2/4/6/8Ω Speakers, Can be Powered by 9V 12V. - 3.5mm/3P Input --- This Amplifier Board Support Two Types of Input: 3.5mm Audio Input or 3P_2.54mm Terminal Input. - Feature --- Eliminate Background Noise and Bring Better Sound Effect. Four 3300UF Professional Audio Filter Capacitors; Vehicle Level Amplifier Chip; Gold Plated Audio Input Terminal; Pure Blakc Sealing Potentiometer. - Protection --- Input Anti Reverse-Connect Protection, Output Short Circuit Protection, Over Current Protection(OCP), Over Temperature Protection (OTP). - ************************************************************* ************************************************************* --- One Year Long-Term ************************************************************* ************************************************************* Since Purchased the Product. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09B32RCX2 | | Best Sellers Rank | 241,682 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 294 in Audio Amplifier | | Brand | DROK | | Customer Reviews | 3.9 3.9 out of 5 stars (119) | | Manufacturer | DROK | | Material | Plastic, Copper, Aluminum, Gold | | Maximum Supply Voltage | 18 Volts | | Minimum Supply Voltage | 9 Volts | | Model Number | 200540 | | Mounting Type | Surface Mount | | Number of Channels | 3 | | Output Power | 120 Watts | | Package Type Name | Box | | Voltage | 18 Volts | ## Product Details - **Manufacturer:** DROK - **Maximum supply voltage:** 18 Volts - **Minimum supply voltage:** 9 Volts - **Mounting type:** Surface Mount - **Voltage:** 18 Volts ## Images ![Class AB Amplifier, 2.1 Channel 80W+80W Stereo and120W Pure Bass 9-18V 4Ω Audio Amplifier Board - Image 1](https://m.media-amazon.com/images/I/717u0kk9kFL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐ Review *by P***O on 15 July 2025* Don't expect much with all the positive reviews...you need to have good quality speakers and it can't pull 80w speakers also...as someone mentioned.... False marketing specs... Quality will be good with good dac and pre amp ...Ideal for 30w-40w speakers and 50 w subwoofer... Don't expect punchy bass .. for this price range it was a good one...I am using 18v 20A power supply. ### ⭐⭐⭐⭐⭐ Review *by T***M on 8 February 2025* This thing slaps, its great at 2 ohms at 80w rms but it does get really hot so add a fan or bigger heatsink. Also it is NOT bridged at the subwoofer output, it is only one channel and other 2 for mids, 3rd one is left unconnected. Im not sure why the left the 3rd channel unused, theres no traces going to it at all. It would have been better to have dual sub outputs to run 2 subs instead. The sound is also really good and it outputs full range and lowpass ### ⭐⭐⭐⭐⭐ Review *by M***S on 24 October 2025* I bought this since it's 2.1 output and importantly class AB. I just wanted to hear class AB over a little D amp I've been using for a while. Sounds nice and I think I can hear the warmness vs D! But aside from that, some important things to note and observations from other reviews. It'll play with as little as 9v and up to 18.9v. As soon as it gets 19v it cuts off output to the speakers. I don't know how accurate my little Ali adapter is with actual voltage, but the number 18.9 is the most it will take and play. So unfortunately, a typical laptop 19.5v adapter you've got won't work here (I tried), but at least it won't blow it up outright. Also output wattage is good, I have a mix of 4 and 8 ohm speakers that work well. I suspect the max power rating of 80x2 and 120w sub is only if you are driving 2 ohm speakers as stated it can do in the specs, which the other reviews complaining about output haven't mentioned what they are using. Edit: From the ST datasheet for the TDA7850 chip: ■ High output power capability: – 4 x 50 W/4  max. – 4 x 30 W/4  @ 14.4 V, 1 kHz, 10 % – 4 x 80 W/2  max. – 4 x 55 W/2  @ 14.4V, 1 kHz, 10 % So try testing 2ohm speaker at 18-19v and lots of current if needing to hit the max. ## Frequently Bought Together - DROK Class AB Amplifier, 2.1 Channel 80W+80W Stereo and120W Pure Bass 9-18V 4Ω Audio Amplifier Board - DROK Blue~Tooth Board, 12V Audio Receiver Blue~Tooth Module DC 5V-12V Portable Wire~Less Electronics Stereo Music Receive Circuit Chip with Micro USB Port for Headphone Speaker Home Sound System DIY - DROK 5W+5W Mini Audio Amplifier Board PAM8406 DC 5V Digital Stereo Power Amp 2.0 Dual Channel Class D Amplify Module for Speaker Sound System DIY --- ## 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.vn/products/475511029-class-ab-amplifier-2-1-channel-80w-80w-stereo-and120w](https://www.desertcart.vn/products/475511029-class-ab-amplifier-2-1-channel-80w-80w-stereo-and120w) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-04-24*