---
product_id: 139537600
title: "DAMGOO Bluetooth Amplifier Board,50w+50w 2 Channel Audio Amplifier Board Suitable for retrofit Speakers Bluetooth Speakers,Easy Installation and Password Free Connect to Phone with Protective Shell"
brand: "owaykey"
price: "130.82 DT"
currency: TND
in_stock: true
reviews_count: 12
category: "Owaykey"
url: https://www.desertcart.tn/products/139537600-damgoo-bluetooth-amplifier-board-50w-50w-2-channel-audio-amplifier
store_origin: TN
region: Tunisia
---

# Bluetooth & AUX dual mode 50W+50W stereo power Wide 4.5-24V voltage input DAMGOO Bluetooth Amplifier Board,50w+50w 2 Channel Audio Amplifier Board Suitable for retrofit Speakers Bluetooth Speakers,Easy Installation and Password Free Connect to Phone with Protective Shell

**Brand:** owaykey
**Price:** 130.82 DT
**Availability:** ✅ In Stock

## Summary

> 🎵 Upgrade your sound game—turn vintage speakers into Bluetooth legends!

## Quick Answers

- **What is this?** DAMGOO Bluetooth Amplifier Board,50w+50w 2 Channel Audio Amplifier Board Suitable for retrofit Speakers Bluetooth Speakers,Easy Installation and Password Free Connect to Phone with Protective Shell by owaykey
- **How much does it cost?** 130.82 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/139537600-damgoo-bluetooth-amplifier-board-50w-50w-2-channel-audio-amplifier)

## Best For

- owaykey enthusiasts

## Why This Product

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

## Key Features

- • **Built-In Safety:** Reverse polarity protection guards your setup from wiring mishaps, ensuring worry-free installation.
- • **Seamless Connectivity:** Effortlessly switch between Bluetooth and AUX inputs with intuitive physical controls—no passwords needed.
- • **User-Centric Controls:** Five tactile buttons let you play, pause, skip tracks, adjust volume, and toggle inputs with ease.
- • **Powerhouse Sound Output:** Unleash crisp, room-filling audio with 50W per channel for your retro or DIY speakers.
- • **Flexible Power Compatibility:** Plug in via DC jack or terminal blocks, compatible with most laptop adapters and portable power sources.

## Overview

The DAMGOO Bluetooth Amplifier Board (ZK-502B) is a compact, high-performance 2-channel audio amplifier delivering 50W per channel via the advanced TPA3116 chip. Supporting a wide voltage range (4.5-24V DC), it offers dual input modes (Bluetooth and AUX) with easy switching through physical buttons. Designed for easy retrofit of existing speakers, it features reverse polarity protection and flexible power options, making it ideal for DIY audio upgrades and custom installations.

## Description

Product description Let our old speakers get cooler We have a lot of speakers with very good sound in our homes, and we rarely use them because there are no Bluetooth receiver modules. Now let's convert the ordinary speakers into cool and stylish Bluetooth speakers. More importantly, this is your own modified speaker, it is also unique. This embodies your cleverness and great hands-on ability, which has different meanings. Finally, remember to share your achievements and happiness with you! DAMGOO Bluetooth Amplifier Board Product Parameter Operating Voltage: DC 4.5-27V Output Power: 50W*2 Signal-Noise Ratio: 102dB Pa ckage Includes 1 X 50W*2 Amplifier Board 2 X Transparent Acrylic Sheets 16 X Screws 1 X paper Box

Review: Worth every penny - I used this in my pinball machine. works perfect, very pleased with the power it puts out Will buy again.
Review: Incredible sound! buy it ! Love it! - This little board is bad ask.lol. Worth every penny ..the power requirements are versatile...5-24vdc. I have powered it up all day with a 20 cordless tool battery. It has yet to use full charge in an 8 hour day. It runs two 8" And two 3" speakers in a four foot custom box and the sound is incredible..I was very surprised at the clarity and range ..excellent bass excellent mids... excellent highs. I have intentions of setting up another board with a amp board and crossovers to drive a couple 12" and horns for an old fender system the Bluetooth has a decent range at about 30' solid and connects easily. I promise you won't be disappointed with this board. Easy to install in any application..the stand alone power is more than adequate for most applications ..I often turnine down as it's loud enough to disturb the neighbors..

## Features

- 【High-Performance TPA3116 Chip】The XY-502B amplifier utilizes the advanced TPA3116 chip, delivering vibrant 2.0 stereo sound with wide voltage input support (DC 4.5-24V) and a powerful output of 50W+50W for rich audio performance.
- 【Dual Output Modes & Easy Switching】Supports both Bluetooth and AUX input modes, allowing seamless switching via physical buttons to connect effortlessly with various devices.
- 【Flexible Power Options】Features two power connection methods: a 5.5*2.1mm DC jack and terminal blocks, compatible with most laptop power adapters for convenient setup.
- 【Reverse Connection Protection】Equipped with reverse polarity protection to safeguard your power input and prevent damage from incorrect wiring.
- 【Intuitive Physical Control】Five tactile buttons provide direct control for play/pause (long press to switch input mode), previous/next track, and volume adjustment, ensuring user-friendly operation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07SHRM5H8 |
| Best Sellers Rank | #56,466 in Electronics ( See Top 100 in Electronics ) #345 in Audio Component Amplifiers |
| Brand Name | OWAYKEY |
| Customer Reviews | 4.6 out of 5 stars 355 Reviews |
| Item Dimensions | 3.43 x 2.09 x 1.14 inches |
| Item Weight | 87 Grams |
| Item dimensions L x W x H | 3.43 x 2.09 x 1.14 inches |
| Manufacturer | DAMGOO |
| Material Type | PCB |
| Maximum Output Power | 100 watts |
| Maximum Supply Voltage | 24 Volts (DC) |
| Minimum Supply Voltage | 4.5 Volts (DC) |
| Model | ZK-502B |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Output Power | 100 Watts |
| Package Type Name | box |
| Part Number | ZK-502B |
| Supply Current | 5 Amps |
| Unit Count | 1.0 Count |
| Voltage | 24 Volts (DC) |

## Product Details

- **Item dimensions L x W x H:** 3.43 x 2.09 x 1.14 inches
- **Manufacturer:** DAMGOO
- **Maximum Supply Voltage:** 24 Volts (DC)
- **Minimum Supply Voltage:** 4.5 Volts (DC)
- **Voltage:** 24 Volts (DC)

## Images

![DAMGOO Bluetooth Amplifier Board,50w+50w 2 Channel Audio Amplifier Board Suitable for retrofit Speakers Bluetooth Speakers,Easy Installation and Password Free Connect to Phone with Protective Shell - Image 1](https://m.media-amazon.com/images/I/71gwdtlNUOL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worth every penny
*by T***R on April 5, 2026*

I used this in my pinball machine. works perfect, very pleased with the power it puts out Will buy again.

### ⭐⭐⭐⭐⭐ Incredible sound! buy it ! Love it!
*by S***S on May 22, 2023*

This little board is bad ask.lol. Worth every penny ..the power requirements are versatile...5-24vdc. I have powered it up all day with a 20 cordless tool battery. It has yet to use full charge in an 8 hour day. It runs two 8" And two 3" speakers in a four foot custom box and the sound is incredible..I was very surprised at the clarity and range ..excellent bass excellent mids... excellent highs. I have intentions of setting up another board with a amp board and crossovers to drive a couple 12" and horns for an old fender system the Bluetooth has a decent range at about 30' solid and connects easily. I promise you won't be disappointed with this board. Easy to install in any application..the stand alone power is more than adequate for most applications ..I often turnine down as it's loud enough to disturb the neighbors..

### ⭐⭐⭐⭐⭐ Very Satisfied
*by S***Y on August 28, 2020*

Update 9/12/2022 The original unit purchased 8/5/2020 still works great. No problems at all. It works so well I bought a second unit this summer for our summer place. It also works great. Original review: It does everything it says. The sound is crystal clear and way loud enough to hear outside on our deck with two Yamaha 8 Ohm speakers on a busy street. I connect to the unit via blue tooth from my phone. So far, it's connected each time since the initial pairing without a problem. I do power the unit down when not in use. When powered up, it beeps first to says it's up, then a second time when it makes the blue tooth connection. I have not attempted to push the sound up as high as it can go as I'm sure my neighbors would not appreciate it. :) I have recommended this to others. I can't say anything about quality or longevity as I've only had it installed for a few weeks now.

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-15*