MP3 Decoder Board with Amplifier, USB TF Card Audio Module for DIY Speaker Projects, Plug and Play

Compact audio module with onboard amplifier for easy playback from TF card or USB drive. Designed for hobby electronics, small speaker systems, and portable projects where simple wiring and reliable MP3 playback are required. Key benefits Ready to use: modular design and speaker terminal require no soldering, making installation and wiring quick and simple. Clear playback control: supports MP3 files from TF card or USB flash drive with a red LED that lights during playback for simple status feedback. Flexible power options: powered by USB 5V via data cable or by a 3.7V battery supply. When supplied at 5V, the onboard amplifier can deliver up to 3W. Direct speaker and headphone output: 2W onboard amplifier for typical use and up to 3W at 5V, directly connects to a speaker. Recommended speaker is 4 ohm 3W. A gold plated 3.5mm headphone jack allows connection to headphones or external audio equipment. Features and specifications Audio format: MP3 playback supported. Storage playback: TF card and USB flash drive playback supported. TF card tested to 16G. USB flash drive tested to 32G. Playback priority and selection: by default the module plays from the TF card. If no TF card is present it will automatically play from the USB drive. When both storage devices are installed, manual selection is available via the module keys. See the key operation instructions for details. Amplifier: onboard 2W nominal output. Up to 3W output when powered at 5V. Speaker compatibility: direct connection to speaker. Recommended speaker impedance and power rating is 4 ohm 3W. Outputs: 3.5mm gold plated headphone jack for headphones or external audio output. Power input: USB supply interface for powering from a mobile power bank or USB charger via data cable. Also compatible with 3.7V battery supply. Practical use scenarios DIY portable speaker: add a speaker and power source for a compact, standalone MP3 player for or display use. Embedded audio for projects: integrate into kiosks, toys, or exhibits to provide simple MP3 playback without complex wiring or soldering. Headphone monitoring or external amplification: use the 3.5mm output to feed headphones or an external amplifier for testing or demonstration. What you get A compact, modular audio playback module with simple wiring, flexible power options, and straightforward controls for reliable MP3 playback from TF card or USB drive.