---
product_id: 360295211
title: "DROK Class AB Amplifier, 2.1 Channel 80W+80W Stereo and120W Pure Bass 9-18V 4Ω Audio Amplifier Board"
brand: "drok"
price: "₨18937"
currency: LKR
in_stock: true
reviews_count: 12
category: "Drok"
url: https://www.desertcart.lk/products/360295211-drok-class-ab-amplifier-2-1-channel-80w-80w-stereo
store_origin: LK
region: Sri Lanka
---

# Max 2x80W stereo + 120W bass output Wide 9-18V DC power range Multi-layer protection system DROK Class AB Amplifier, 2.1 Channel 80W+80W Stereo and120W Pure Bass 9-18V 4Ω Audio Amplifier Board

**Brand:** drok
**Price:** ₨18937
**Availability:** ✅ In Stock

## Summary

> 🔊 Elevate your sound game with pure power and clarity — don’t miss the bass drop!

## Quick Answers

- **What is this?** DROK 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?** ₨18937 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/360295211-drok-class-ab-amplifier-2-1-channel-80w-80w-stereo)

## 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

- • **Plug & Play Versatility:** Supports both 3.5mm AUX and 3P terminal inputs with gold-plated connectors and compact form factor compatible with Bluetooth modules.
- • **Robust Protection Suite:** Built-in safeguards including anti-reverse input, short circuit, overcurrent, and overtemperature protection ensure reliable, worry-free performance.
- • **Crystal-Clear Audio Quality:** Advanced Class AB amplifier design with professional-grade audio filters eliminates background noise for pristine sound clarity.
- • **Powerful 2.1 Channel Output:** Experience immersive stereo sound with 80W per channel plus a booming 120W pure bass subwoofer output.
- • **Flexible Voltage Compatibility:** Runs seamlessly on any DC power supply from 9V to 18V, perfect for versatile setups from desktop to vehicle audio.

## Overview

The DROK Class AB Amplifier is a compact yet powerful 2.1 channel audio amplifier board delivering up to 80W per stereo channel and 120W pure bass output. Operating on a flexible 9-18V DC range, it supports multiple speaker impedances and input types, featuring advanced noise reduction and comprehensive protection mechanisms. Ideal for audiophiles and DIY enthusiasts seeking high-fidelity sound with reliable performance in a sleek, easy-to-integrate design.

## 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: Really nice little AB amp! - 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.
Review: Amazing sound quality, and build quality. Highly recommended - This is a really nice amplifier board, and I've tried a few. This review specifically pertains to the model being listed here, "Class AB Amplifier, DROK 2.1 Channel 80W+80W Stereo and120W Pure Bass 9-18V 4Ω Audio Amplifier Board". Some of the older reviews appear to be talking about a totally different product. This one does not have bluetooth. Honestly the sound quality from this thing is outstanding, it's clean and loud and music sounds fantastic. K have it hooked up to an ATX power supply that I use for my car audio equipment at home, pushing 12v through a fused distribution block. The input is a 3.5mm aux connection to my Galaxy S22 USB-C out, converted through an in-line DAC. Upon initial turn-on, a nice green LED lit up,and there is no noise whatsoever coming out of my 6.5 inch coax speakers. No buzz,no fuzz, no hiss, and no piss. A beautiful thing go experience if you've been let down by some of these mini amplifier boards previously like i have. I also hooked up the subwoofer output to my 10 inch sealed Infinity REF sub at 2 ohms. The balance is unbelievable! There's only one volume control know, so there is no way to modulate the sub or speakers independently, they're just mixed on the board, but the mix is super nice and balanced. Overall I'm super happy with this amp. It aounds better than other amps that cost multiples of what this one cost me ($23). I recommend it without reservation, just make sure you know what you're doing and have the 12v equipment needed for running this in your setup. Kinda wish it had bluetooth but I knew it wouldn't going into it so that's not an actual knock on the product. Just a wish. Good luck and enjoy. This thing puts out loud clean clear audio signals for your speakers!!

## 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).
- Warranty Guarantee --- 1 Year Long-Term Warranty Guarantee Since Purchased the Product.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09B32RCX2 |
| Best Sellers Rank | #111,579 in Electronics ( See Top 100 in Electronics ) #706 in Audio Component Amplifiers |
| Brand | DROK |
| Customer Reviews | 4.1 4.1 out of 5 stars (119) |
| Date First Available | July 23, 2021 |
| Item Weight | 5.9 ounces |
| Item model number | 200540 |
| Manufacturer | DROK |
| Maximum Supply Voltage | 18 Volts |
| Minimum Supply Voltage | 9 Volts (DC) |
| Mounting Type | Surface Mount |
| Number of Channels | 3 |
| Output Power | 120 Watts |
| Package Dimensions | 5.91 x 4.8 x 1.5 inches |
| Package Type Name | Box |
| Voltage | 18 Volts |

## Product Details

- **Manufacturer:** DROK
- **Maximum Supply Voltage:** 18 Volts
- **Minimum Supply Voltage:** 9 Volts (DC)
- **Mounting Type:** Surface Mount
- **Voltage:** 18 Volts

## Images

![DROK 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

### ⭐⭐⭐⭐⭐ Really nice little AB amp!
*by M***S on October 24, 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.

### ⭐⭐⭐⭐⭐ Amazing sound quality, and build quality. Highly recommended
*by R***R on July 23, 2022*

This is a really nice amplifier board, and I've tried a few. This review specifically pertains to the model being listed here, "Class AB Amplifier, DROK 2.1 Channel 80W+80W Stereo and120W Pure Bass 9-18V 4Ω Audio Amplifier Board". Some of the older reviews appear to be talking about a totally different product. This one does not have bluetooth. Honestly the sound quality from this thing is outstanding, it's clean and loud and music sounds fantastic. K have it hooked up to an ATX power supply that I use for my car audio equipment at home, pushing 12v through a fused distribution block. The input is a 3.5mm aux connection to my Galaxy S22 USB-C out, converted through an in-line DAC. Upon initial turn-on, a nice green LED lit up,and there is no noise whatsoever coming out of my 6.5 inch coax speakers. No buzz,no fuzz, no hiss, and no piss. A beautiful thing go experience if you've been let down by some of these mini amplifier boards previously like i have. I also hooked up the subwoofer output to my 10 inch sealed Infinity REF sub at 2 ohms. The balance is unbelievable! There's only one volume control know, so there is no way to modulate the sub or speakers independently, they're just mixed on the board, but the mix is super nice and balanced. Overall I'm super happy with this amp. It aounds better than other amps that cost multiples of what this one cost me ($23). I recommend it without reservation, just make sure you know what you're doing and have the 12v equipment needed for running this in your setup. Kinda wish it had bluetooth but I knew it wouldn't going into it so that's not an actual knock on the product. Just a wish. Good luck and enjoy. This thing puts out loud clean clear audio signals for your speakers!!

### ⭐⭐⭐⭐ Good Quality, TDA7850 chip, Exaggerated Specs
*by J***T on July 14, 2024*

Interesting little board for the DIY / hobbyist crowd. It uses a ST TDA7850 chip intended for 4 channel automotive applications. The subwoofer implementation is pretty straightforward, although it should be noted that the subwoofer uses only one of the chip's amplifier sections, it's not 2 sections bridged as you might assume from the advertised specs. Look up the ST TDA7850 datasheet for more realistic specs. Despite the specsmanship, I found this to be a nice alternative to all the Class-D boards out there. I measured about 60W into 4ohms at clip with a 15V supply, impressive for the price. Sound quality is about what you would expect. It's obviously not going in any audiophile systems but would be right at home in desktop A/V applications.

## 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.lk/products/360295211-drok-class-ab-amplifier-2-1-channel-80w-80w-stereo](https://www.desertcart.lk/products/360295211-drok-class-ab-amplifier-2-1-channel-80w-80w-stereo)

---

*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-26*