GPD2846A MP3 Decoder Board with TF Card Slot – 2W Amplifier Module

The GPD2846A MP3 Decoder Board with TF Card Slot – 2W Amplifier Module combines two functions in module — an MP3 decoder that reads audio files from a Micro SD/TF card and a 2W Class AB amplifier that drives a small speaker directly. Most standalone MP3 decoder modules output a line-level analog signal that still requires a separate amplifier board before connecting to a speaker. This module skips that step — the GPD2846A chip decodes the MP3 file from the TF card and the onboard 2W amplifier outputs directly to a speaker without any additional audio stage in between.

The mp3 decoder module operates from 3.7V to 5V DC, running from a single Li-Ion cell at 3.7V nominal or a standard 5V USB supply. Signal-to-noise ratio at 85 dB keeps background noise below audible threshold for voice announcement, alert tone, and background music playback at normal indoor listening levels. The SOP16 chip footprint on a 34mm x 22mm PCB keeps the board small enough to embed inside speaker enclosures, robot heads, toy builds, and interactive display panels without the module itself becoming the size constraint.

The gpd2846a tf card mp3 decoder board reads MP3 files stored on a standard Micro SD card — format the card as FAT32 and copy MP3 files to the root directory. File playback is typically triggered by hardware control pins on the module — pulling specific pins low or high advances tracks, repeats, or selects specific files depending on pin configuration. Confirm the exact control pin function with the supplier’s documentation before building the control circuit. The audio amplifier module suits voice announcement systems, interactive toy audio, and embedded sound effect triggers. This gpd2846a mp3 decoder module available on StemVolt.

Related Product:

• Checkout DF Player Mini

Features:

• Integrated MP3 decoder and 2W amplifier on single 34x22mm compact PCB
• An integrated TF Card slot allows the device to play MP3 files directly from cards
• 3.7V to 5V supply runs from Li-Ion cell or 5V USB power source equally
• 85 dB SNR delivers clean audio for voice announcement and music
• Hardware control pins trigger track advance, repeat, and file selection

Technical Specifications:

 Applications:

• GPD2846A MP3 Decoder Board plays audio and voice prompts in IoT notification device
• decoder module adds sound effects to interactive robotics projects
• Audio amplifier module plays background music from TF card in compact speaker
• GPD2846A module plays alarm sounds for security alert

Package Include:

• 1 x GPD2846A MP3 Decoder Board with TF Card Slot – 2W Amplifier Module