This 2x50W 100W Amplifier Bluetooth 5.0 MP3 Decoder Board is a compact, all in one DIY car audio module that blends a power dual channel amplifier with modern media features. It enables wireless music, local MP3 playback, and flexible input switching in a single board. Key benefits power dual channel amplification: 2 x 50W output with a combined capability of up to 100W, suitable for enhancing car audio or compact speaker setups. Bluetooth 5.0 streaming and hands calling: stable wireless connection to phones and other devices with support for phone calls. MP3 decoding for local playback: built in MP3 decoder to play music from various sources with clear sound. Flexible input sources: USB playback, TF card (microSD) playback, FM radio, and USB recording for versatile listening options. Easy source switching: switch between Bluetooth, USB, TF, and FM sources quickly to match your listening needs. DIY friendly board design: compact form factor suitable for integration into car projects, custom speakers, or small multimedia installations. Key attributes Amplifier power: 2 x 50W, totaling up to 100W Wireless standard: Bluetooth 5.0 for reliable audio streaming and hands calls Media decoding: MP3 decoder for local playback Source inputs: USB, TF microSD card Radio: FM radio tuner included Recording: USB recording capability Calling: Bluetooth hands calling support Source switching: built in switching between audio sources Form factor: compact PCB style board designed for DIY projects Compatibility: suitable for DIY car audio applications and compatible with standard MP3 players and Bluetooth devices Power and wiring: designed for integration with appropriate power supply in DIY installations Use cases In car audio upgrade: install the board to add Bluetooth streaming, hands calling, FM radio, and MP3 playback from USB or TF card while driving, with a power stereo output. DIY multimedia hub: build a compact home or office speaker system that can play MP3s from USB or microSD, stream from a Bluetooth device, scan FM radio, and record via USB. Event and demo setups: quick setup for demonstrations or small venues, providing wireless audio input, local playback, and recording options in a single board. This module keeps a professional, credible tone while clearly outlining how the features work together to deliver flexible audio performance. It emphasizes practical benefits, compatible use cases, and the core specifications from the original product title without adding extraneous details.