Overview
The GPD2846A / MP3 Lossless Decoder Board is a compact all-in-one solution for audio playback. It is designed to play high-quality MP3 files without a computer or microcontroller. With an onboard 3W Mono Amplifier, it can drive a small speaker directly, making it perfect for custom toy sounds, portable music boxes, or “talking” electronics projects. Simply plug in a 3.7V Li-ion battery or 5V USB power, insert your media, and enjoy the sound.
Key Features
Dual Media Support: Play music directly from a USB Flash Drive or a MicroSD (TF) Card.
Built-in Amplifier: Features an onboard 2W-3W mono power amplifier—no external amp needed for small speakers!
Lossless Decoding: Supports high-bitrate MP3 files for crisp, clear audio quality.
Onboard Controls: Includes buttons for Prev/V-, Next/V+, Play/Pause, and Repeat/Mode.
Gold-Plated Terminals: High-quality solder pads for power and speaker connections to ensure low resistance.
Technical Specifications
| Feature | Specification |
| Operating Voltage | 3.7V to 5.5V DC (USB or Li-ion Battery) |
| Output Power | 2W – 3W (Mono) |
| Speaker Impedance | 4Ω (Recommended) |
| Supported Formats | MP3 (Lossless Decoding) |
| Storage Support | TF Card (up to 32GB) / USB Disk (up to 32GB) |
| Dimensions | 45mm x 36mm |
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