--- product_id: 90246810 title: "300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board (Better than 4440 IC)" brand: "tech and trade" price: "9802 som" currency: KGS in_stock: false reviews_count: 8 url: https://www.desertcart.kg/products/90246810-300w-diy-2n3055-transistor-based-stereo-audio-amplifier-board-better store_origin: KG region: Kyrgyzstan --- # 300W peak power output Heavy gauge aluminum heatsink 4 potentiometer tone controls 300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board (Better than 4440 IC) **Brand:** tech and trade **Price:** 9802 som **Availability:** ❌ Out of Stock ## Summary > 🎡 Amplify your sound, amplify your lifestyle! ## Quick Answers - **What is this?** 300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board (Better than 4440 IC) by tech and trade - **How much does it cost?** 9802 som with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/90246810-300w-diy-2n3055-transistor-based-stereo-audio-amplifier-board-better) ## 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 - β€’ **Thermal Mastery:** Equipped with a heavy-duty aluminum heatsink and silicon separator to ensure optimal heat dissipation and transistor longevity. - β€’ **Smart Power Supply:** Integrated step-up circuit converts 12V input to a stable 24V output delivering 5-7A, guaranteeing consistent high-power performance. - β€’ **Powerhouse Performance:** Delivers a robust 300W stereo output, powering your 4Ξ© speakers with 150W per channel for immersive sound. - β€’ **Precision Tone Control:** Fine-tune your audio experience with dedicated bass, treble, volume, and balance knobs for studio-quality sound shaping. - β€’ **Effortless Installation:** Modular design with pre-soldered potentiometers and clear connections makes setup a breezeβ€”even for DIY enthusiasts. ## Overview This 300W DIY stereo audio amplifier board harnesses four robust 2n3055 transistors paired with a smart 24V step-up power supply to deliver powerful, crystal-clear stereo sound. Featuring dedicated bass, treble, volume, and balance controls, it offers precise audio customization. Its heavy aluminum heatsink ensures reliable heat management, while the modular design with pre-installed potentiometers makes installation straightforward for professionals and hobbyists alike. ## Description 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 SAPARATE CONTROLS FOR BASS, TREBLE, VOLUME AND BALANCE. THESE CONTROLS ARE OPERATED BY FOUR POTENTIOMETERS, ALSO KNOWN AS 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 MAI BOARD CONTAINS ALL THE NECESSARY AMPLIFIER COMPONENTS. THE MAIN BOARD HAS THE CONTROLLING CONNECTIONS OF VOLUME, BASS, TREBLE BALANCE 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. THIS SET OF FOUR TRANSISTORS IS MOUNTED ON A HEAT SINK. THE HEATSINK IS MADE UP OF HEAVY GUAGE ALUMINIUM FOR EASY AND SMOOTH HEAT DISPERSION. THE TRANSISTORS ARE INSTALLED ON A SILICON SAPARATOE 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 - 2n3055 TRANSISTORS - ABOUT 300 W POWER OUTPUT. ## Technical Specifications | Specification | Value | |---------------|-------| | Item dimensions L x W x H | 18 x 18 x 10 Centimeters | | Voltage | 12 Volts, 24 Volts | | Manufacturer | TECH AND TRADE, TECH AND TRADE SOLUTIONS, A-322, RAMA GARDEN, KARAWAL NAGAR, DELHI 110094 | | Maximum Supply Voltage | 12 Volts | | Mounting Type | Surface Mount | | Brand | TECH AND TRADE | | Number of Channels | 2 | | Output Power | 3E+2 Watts | | Specification Met | RoHS | | Material | aluminium | | Product Dimensions | 18 x 18 x 10 cm; 700 g | | Item part number | TNTS2n3055BST | | Special Features | 300W STEREO OUTPUT, HEAVY HEATSINK FOR TRANSISTORS, SUPPLY CIRCUIT FOR STEP UP POWER. | | Mounting Hardware | 1 MAIN BOARD, 1 POWER SUPPLY CIRCUIT, 1 TRANSISTOR ASSEMBLY | | Power Source | corded electric | | Batteries Included | No | | Batteries Required | No | | Manufacturer | TECH AND TRADE | | Item Weight | 700 g | ## Product Details - **Item dimensions L x W x H:** 18 x 18 x 10 Centimeters - **Voltage:** 12 Volts, 24 Volts - **Manufacturer:** TECH AND TRADE, TECH AND TRADE SOLUTIONS, A-322, RAMA GARDEN, KARAWAL NAGAR, DELHI 110094 - **Maximum Supply Voltage:** 12 Volts - **Mounting Type:** Surface Mount ## Images ![300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board (Better than 4440 IC) - Image 1](https://m.media-amazon.com/images/I/91EO6rcGIpL.jpg) ![300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board (Better than 4440 IC) - Image 2](https://m.media-amazon.com/images/I/91p2bufTssL.jpg) ![300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board (Better than 4440 IC) - Image 3](https://m.media-amazon.com/images/I/91AZ8NYMXPL.jpg) ![300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board (Better than 4440 IC) - Image 4](https://m.media-amazon.com/images/I/81oVEzfelBL.jpg) ![300W DIY 2n3055 Transistor Based Stereo Audio Amplifier Board (Better than 4440 IC) - Image 5](https://m.media-amazon.com/images/I/81XN13s4PbL.jpg) ## Questions & Answers **Q: Can I use 12-0-12 volt 7 ampere transformer to the power supply board? How will be the audio output after that?** A: It works well with the 12-0-12V 7-amps !!! 12-0-12V 5-Amps low output **Q: can i use 24-24 v, 5 amp Transformer ?** A: you mean 24-0-24v. yes. **Q: Can i use this12volt 2amp power supply** A: No **Q: Hi, can a 32-0-32v, 5-amp dc power supply be used to connect to the power supply ?** A: no. this needs 12v dc power supply. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent sound system product *by S***A on 9 March 2019* Really good working ### ⭐ Amazon Services Good, But T&TT Products #KACHRA *by H***R on 21 November 2018* Delivery and shipping are good by amazon but product quality so cheap. In only under two months some components damaged while playing sound like one 3055 transistor and some resistances with capacitors.My money wasted. So never buy Tech &Trade products its only waste of money. ### ⭐⭐⭐⭐ Four Stars *by D***D on 6 September 2018* Good out put clear with out noise , but one transistor was faulty i am replaced with new --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kg/products/90246810-300w-diy-2n3055-transistor-based-stereo-audio-amplifier-board-better](https://www.desertcart.kg/products/90246810-300w-diy-2n3055-transistor-based-stereo-audio-amplifier-board-better) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-05-01*