--- product_id: 629537133 title: "ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater" brand: "hosyond" price: "₨14519" currency: LKR in_stock: true category: "Hosyond" url: https://www.desertcart.lk/products/629537133-zk-mt21-2-1-channel-bluetooth-audio-power-amplifier-board store_origin: LK region: Sri Lanka --- # Bluetooth 5.0, 49ft range 50W×2+100W output power Treble & bass adjustable ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater **Brand:** hosyond **Price:** ₨14519 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your sound game—because your DIY speaker deserves pro-level power! ## Quick Answers - **What is this?** ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater by hosyond - **How much does it cost?** ₨14519 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/629537133-zk-mt21-2-1-channel-bluetooth-audio-power-amplifier-board) ## Best For - hosyond enthusiasts ## Why This Product - Trusted hosyond brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Protection System:** Built-in safeguards against short circuits, overheating, and reverse polarity keep your gear safe and reliable. - • **Customizable Sound Profile:** Fine-tune your audio with dedicated treble and bass controls to match your mood and space. - • **Effortless DIY Integration:** Copper DC connectors and included DC head lead make installation a breeze—even without extra adapters. - • **Powerful 2.1 Channel Output:** Experience immersive sound with 50W×2 + 100W subwoofer power for crystal-clear highs and deep bass. - • **Seamless Bluetooth 5.0 Connectivity:** Enjoy lag-free wireless streaming up to 49 feet—perfect for modern, clutter-free setups. ## Overview The ZK-MT21 is a versatile 2.1 channel Bluetooth audio amplifier delivering 50W per stereo channel plus 100W subwoofer output. Featuring Bluetooth 5.0 with a 49-foot range, adjustable treble and bass controls, and comprehensive protection functions, it’s designed for seamless integration into DIY speakers and home theaters. Durable copper connectors and included accessories ensure easy setup, making it a top choice for audiophiles and creators seeking powerful, customizable sound. ## Description Buy ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater: Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - [Two Input Methods] It has two audio input methods: Bluetooth and 3.5mm AUX. Bluetooth 5.0 version, higher transmission efficiency, transmission distance up to 49 feet (no obstruction). - [Treble and Bass Adjustment] 2.1 channel, maximum output power 2X50W+100W. By adjusting the high and low frequency knobs, you can make the sound more layered and the bass more shocking. - [Protection Function] It has short circuit protection, overcurrent, overheating, and anti-reverse connection protection. When an overload occurs, the device reports the fault condition to the processor to protect itself from damage. - [High Quality] Features copper DC connectors and barrier style terminals. It can withstand large currents without generating heat or damaging wires. Comes with a DC head lead, which is compatible with the input power interface of this product. Even if you don’t have a DC head adapter or battery, you can easily connect it. - [Application] Widely used in store solicitation, home theaters, DIY speakers, etc. If you have any questions about the product, or the product has quality problems, please feel free to contact us and we will give you a satisfactory answer. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CYLW7NRC | | Best Sellers Rank | #7,867 in Electronics ( See Top 100 in Electronics ) #34 in Audio Component Amplifiers | | Brand Name | Hosyond | | Customer Reviews | 4.4 4.4 out of 5 stars (223) | | Included Components | 2.1 Bluetooth Amplifier board | | Manufacturer | Hosyond | | Material Type | Plastic | | Maximum Output Power | 50W×2+100W | | Maximum Supply Voltage | 24 volts_of_direct_current | | Minimum Supply Voltage | 12 volts_of_direct_current | | Model | MT21 | | Mounting Type | Surface Mount | | Number of Channels | 2 | | Number of Items | 1 | | Number of Packs | 1 | | Output Power | 50 watts | | Package Type Name | Box or Clamshell | | Part Number | MT21 | | Specification Met | CE | | Supply Current | 5 A | | UPC | 768572762640 | | Voltage | 12 volts_of_direct_current | | Warranty Description | NO | ## Product Details - **Manufacturer:** Hosyond - **Maximum Supply Voltage:** 24 volts_of_direct_current - **Minimum Supply Voltage:** 12 volts_of_direct_current - **Mounting Type:** Surface Mount - **Voltage:** 12 volts_of_direct_current ## Images ![ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater - Image 1](https://m.media-amazon.com/images/I/41El-ycdkHL.jpg) ![ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater - Image 2](https://m.media-amazon.com/images/I/51WeeQdSL6L.jpg) ![ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater - Image 3](https://m.media-amazon.com/images/I/416PpgiD20L.jpg) ![ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater - Image 4](https://m.media-amazon.com/images/I/51qy5AnRf9L.jpg) ![ZK-MT21 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater - Image 5](https://m.media-amazon.com/images/I/415Bfyg3QtL.jpg) ## Available Options This product comes in different **Style** options. ## Frequently Bought Together - Hosyond 2.1 Channel Bluetooth Audio Power Amplifier Board 50W×2+100W with Treble and Bass Control for DIY Bluetooth Speaker Home Theater - APIELE 16mm Latching Push Button Switch 12V DC On Off Black Shell with LED Angel Eye Head for 0.63" Mounting Hole with Wire Socket Plug Self-Locking (Blue/Black Shell) - Kzreect for Power Wheel Adapter Compatible with Milwaukee 18V Battery, Converter Kit with Fuse Holder, Switch, Terminal, 12AWG Wire for DIY RC Car Toys (1 Pack) --- ## 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/629537133-zk-mt21-2-1-channel-bluetooth-audio-power-amplifier-board](https://www.desertcart.lk/products/629537133-zk-mt21-2-1-channel-bluetooth-audio-power-amplifier-board) --- *Product available on Desertcart Sri Lanka* *Store origin: LK* *Last updated: 2026-09-28*