---
product_id: 216078347
title: "300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board with Karaoke MIC Driver, TRANSISTORS and 24 Volts Supply Circuit (Better Than 4440 IC)"
brand: "tech and trade"
price: "1549523₫"
currency: VND
in_stock: true
reviews_count: 1
url: https://www.desertcart.vn/products/216078347-300w-diy-2n3055-transistor-based-stereo-audio-amplifier-board-karaoke
store_origin: VN
region: Vietnam
---

# Karaoke mic driver 300W stereo power Aluminum heatsink cooling 300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board with Karaoke MIC Driver, TRANSISTORS and 24 Volts Supply Circuit (Better Than 4440 IC)

**Brand:** tech and trade
**Price:** 1549523₫
**Availability:** ✅ In Stock

## Summary

> 🎶 Amplify your passion, own the stage with 300W of pure power!

## Quick Answers

- **What is this?** 300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board with Karaoke MIC Driver, TRANSISTORS and 24 Volts Supply Circuit (Better Than 4440 IC) by tech and trade
- **How much does it cost?** 1549523₫ 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/216078347-300w-diy-2n3055-transistor-based-stereo-audio-amplifier-board-karaoke)

## Best For

- tech and trade enthusiasts

## Why This Product

- Trusted tech and trade brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play DIY Kit:** Easy installation with all components pre-assembled and ready to amplify your sound journey.
- • **Precision Sound Control:** Adjust bass, treble, and volume independently for a tailored audio vibe.
- • **Integrated Karaoke Mic Driver:** Switch seamlessly between regular audio and karaoke mode to unleash your inner star.
- • **Power-Packed 300W Stereo Output:** Feel every beat with 150W per channel, perfect for immersive sound experiences.
- • **Robust 2N3055 Transistor Assembly:** Four high-performance transistors mounted on a heavy-gauge aluminum heatsink ensure durability and smooth heat dissipation.

## Overview

The TECH AND TRADE 300W DIY Stereo Audio Amplifier Board delivers a powerful 300W stereo output using four 2N3055 transistors and a 24V power supply. Designed for aspiring singers and audiophiles, it features an integrated karaoke microphone driver with a selector switch, separate bass, treble, and volume controls, and a robust aluminum heatsink for efficient cooling. This easy-to-install kit includes all essential components, making it a perfect blend of performance and DIY satisfaction.

## Description

THIS KIT IS FOR UPCOMING SINGERS WHO CAN PRACTICE THEIR SINGING TALENTS ON THIS AUDIO KIT. THIS KIT CONTAINS A KARAOKE MICROPHONE DRIVER CIRCUIT THAT RUNS ON 12 VOLTS DC. THIS MIC DRIVER HAS A SELECTOR SWITCH WHICH LETS YOU TO CHOOSE BETWEEN REGULAR AMPLIFIER AND A KARAOKE. YOU CAN PLAY YOUR SONGS WITH YOUR FAVORITE TUNES. THIS IS AN AUDIO AMPLIFIER CIRCUIT BOARD BASED ON 2n3055 TRANSISTORS. THIS BOARD USES FOUR 2n3055 TRANSISTORS AND A 24 VOLTS DC POWER SUPPLY TO GENERATE AN OUTPUT OF ABOUT 300 WATTS. THIS BOARD HAS SEPARATE CONTROLS FOR BASS, TREBLE, VOLUME . THESE CONTROLS ARE OPERATED BY THREE POTENTIOMETERS, ALSO KNOWN AS DUAL TONES. THIS BOARD HAS STEREO OUTPUT. BOTH THE CHANNELS PROVIDE ABOUT 150 WATTS AT FOR 4 OHMS SPEAKERS. THIS BOARD IS VERY EASY TO INSTALL. THE ENTIRE PRODUCT COMPRISES OF FOUR INDIVIDUAL PARTS. FIRST PART IS THE MAIN BOARD. THE MAIN BOARD CONTAINS ALL THE NECESSARY AMPLIFIER COMPONENTS. THE MAIN BOARD HAS THE CONTROLLING CONNECTIONS OF VOLUME, BASS, TREBLE ETC. THIS BOARD WILL BE PROVIDED AS SHOWN IN THE IMAGE. ALL THE POTENTIOMETERS WILL BE SOLDERED IN, EXACTLY LIKE THE IMAGE SHOWS. SECOND PART IS THE 2n3055 TRANSISTORS ASSEMBLY. THIS SET OF FOUR TRANSISTORS IS MOUNTED ON A HEAT SINK. THE HEATSINK IS MADE UP OF HEAVY GAUGE ALUMINIUM FOR EASY AND SMOOTH HEAT DISPERSION. THE TRANSISTORS ARE INSTALLED ON A SILICON SEPARATOR WHICH PREVENTS THE TRANSISTORS FROM SHORTING AND OTHER VOLTAGE DAMAGES. THIRD PART IS THE POWER SUPPLY. THE POWER SUPPLY TAKES UP A VOLTAGE OF 12 VOLTS AND THEN CONVERTS IT TO 24 VOLTS. THIS SUPPLY BOARD CAN PROVIDE THE VOLTAGE OUTPUT OF ABOUT 5 TO 7 AMPERES.

## Features

- 300 WATTS STEREO OUTPUT.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | TECH AND TRADE |
| Manufacturer | TECH AND TRADE SOLUTIONS, B-2, KAMAL VIHAR, KARAWAL NAGAR, DELHI 110090. |
| Product Dimensions | 15 x 15 x 10 cm; 450 g |
| Item part number | TNTS3055BSTmic |
| Mounting Hardware | 1 MAIN BOARD , 1 POWER SUPPLY, 1 KARAOKE MIC DRIVER, TRANSISTOR ASSEMBLY AND MANUAL |
| Speaker Surround Sound Channel Configuration | 2 |
| Wattage | 300 Watts |
| Batteries Included | No |
| Batteries Required | No |
| Manufacturer | TECH AND TRADE SOLUTIONS, B-2, KAMAL VIHAR, KARAWAL NAGAR, DELHI 110090. |
| Item Weight | 450 g |

## Images

![300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board with Karaoke MIC Driver, TRANSISTORS and 24 Volts Supply Circuit (Better Than 4440 IC) - Image 1](https://m.media-amazon.com/images/I/91pGt92dMGL.jpg)

## Customer Reviews

### ⭐ Damage  and local home made products
*by A***N on 25 August 2020*

Low quality productsAs like home madeNot have clear sound

---

## 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/216078347-300w-diy-2n3055-transistor-based-stereo-audio-amplifier-board-karaoke](https://www.desertcart.vn/products/216078347-300w-diy-2n3055-transistor-based-stereo-audio-amplifier-board-karaoke)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-07*