MP3 Decoder Board with Amplifier for TF Card and USB Drive

Power and Connectivity Options This MP3 decoder board offers flexible powering arrangements to suit different setups. It features a Micro-USB power input, allowing you to run the board from a power bank or a standard USB charger using a regular phone data cable. Alternatively, you can power it with a 3.7V lithium battery or a USB 5V power adapter, giving you plenty of choice depending on your project requirements. Built-in Amplifier and Audio Output The board includes a built-in 2W mono amplifier that can deliver up to 3W when powered at 5V. This connects directly to a speaker, with a 4-ohm 3W speaker recommended for best results. A gold-plated 3.5mm headphone jack is also provided, so you can connect headphones or route the audio to an external sound system if preferred. Playback Features and Supported Formats Supporting MP3 format playback, the board automatically begins playing when powered on, with a red LED indicator that updates during playback. It works with both U-disk storage and TF cards. When the board is set to standard TF card mode and no card is inserted, it automatically switches to U-disk playback. If both storage devices are installed, you can manually select the playback mode using the main operating instructions. Easy Installation and Modular Design The board requires no soldering for the horn connection, which simplifies wiring considerably. Its modular construction makes it straightforward to modify or integrate into your own audio projects, whether you are building a portable speaker, upgrading an existing device, or working on a custom DIY electronics project.