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GPD2856C MP3 Audio Player Board (MicroSD) | Pro Tronix
195.00 EGP
Compact GPD2856C MP3 audio player decoder board featuring an onboard 2W–3W amplifier, USB flash drive, and MicroSD card support. Perfect for portable audio devices, voice prompts, and DIY electronics!
In stock
Product Description
The GPD2856C MP3 Audio Player Board is a compact and versatile audio decoding module designed for DIY sound projects, custom voice prompts, and portable music players. Built around the reliable GPD2856C chip, it supports direct playback of MP3 and WAV audio files from a MicroSD card without requiring complex programming or external microcontrollers.
Equipped with onboard tactile buttons for playback control (Play/Pause, Volume Up/Down, Next/Previous) and a direct speaker output stage, it allows you to connect a small 8-ohm speaker directly and start playing audio instantly with just a single 3.7V to 5V power source.
⚠️ Audio Power Tip: The onboard amplifier can drive small speakers directly, but ensure your power supply can provide sufficient current (at least 500mA to 1A) during loud audio playback to prevent voltage drops and unexpected module resets.
Technical & Architectural Highlights
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Direct MicroSD Card Playback: Plug-and-play music decoding straight from a standard MicroSD card loaded with your favorite audio tracks.
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Onboard Control Buttons: Physical tactile switches on the board allow effortless track navigation, volume adjustment, and mode control without external wiring.
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Direct Speaker Output: Features dedicated speaker output terminals designed to drive small 3W to 5W speakers directly.
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Wide Operating Voltage: Operates reliably on standard 3.7V lithium batteries or a 5V DC USB power line.
🧰 Recommended Audio & Prototyping Essentials
Building a custom sound player, voice prompt system, or portable audio device? Pair this module with these essential components:
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Small 8-Ohm Speakers (3W / 5W): Compact speakers that wire directly to the board’s output terminals: Pro Tronix Speakers Collection
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MicroSD Memory Cards: Fast, reliable storage cards for loading your MP3 and WAV music libraries: Pro Tronix Storage Collection
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3.7V Lithium Battery Packs & Chargers: Portable power sources for standalone audio players: Pro Tronix Batteries Collection
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Pushbutton Switches & Terminal Blocks: Optional external controls for mounting buttons on your project enclosure: Pro Tronix Switches Collection
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Breadboards & Jumper Wires: Quick prototyping connections for testing your audio circuit: Pro Tronix Breadboards Collection
Technical Specifications
| Parameter | Value / Specification |
| Module Model | GPD2856C |
| Supported Audio Formats | MP3, WAV |
| Storage Interface | MicroSD Card Slot |
| Operating Voltage | 3.7V to 5V DC |
| Audio Output | Direct Speaker Driver (Compatible with 4-ohm to 8-ohm speakers) |
| Control Interface | Onboard Tactile Buttons / External Key Pads |
| Package Type | Compact PCB Module |
Applications
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Custom Voice Prompt Systems: Adding spoken audio feedback to industrial machines, vending machines, and smart appliances.
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Portable MP3 Players: Building miniature standalone music boxes and custom audio gadgets.
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Interactive STEM Exhibits: Adding sound effects to school projects, dioramas, and Halloween props.
What’s in the Box
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1 x GPD2856C MP3 Audio Player Board with MicroSD Slot.
All your electronics components and prototyping accessories are available with fast shipping across Egypt from Pro Tronix!
Pinout Configuration
Looking at the GPD2856C board module, the standard connection terminals include:
| Pin Designation | Description |
| VCC | Positive Power Supply (3.7V to 5V DC) |
| GND | Ground (0V) |
| SPK+ | Speaker Positive Output (Connect to 4-ohm to 8-ohm speaker) |
| SPK- | Speaker Negative Output (Connect to 4-ohm to 8-ohm speaker) |
| DAC_R / DAC_L | Line-Out Audio Signals (for connecting to external amplifiers) |
| IO Ports | External Pushbutton Control Inputs |
Shipping & Delivery Policy
At Protronix, we ensure your orders are delivered safely and efficiently through multiple reliable channels tailored to your needs.
Our Delivery Methods
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Egypt Post: Standard shipping to all governorates across Egypt via the National Postal Authority.
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Uber Scooter: Fast, same-day express delivery for local orders within supported urban areas.
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Store Pickup: You can skip the shipping fees by collecting your order directly from our main branch.
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