Compact Bluetooth USB TF Decoder Board

This decoder board measures approx. 5.1 × 4.1 × 0.5 cm (2.01 × 1.61 × 0.20 inches) and is made from lightweight yet rigid plastic — ideal for space-constrained installations. It supports three distinct audio input methods: Bluetooth 5.0-class wireless reception, USB storage device playback, and TF (microSD) card decoding. Recognised audio formats include MP3, WMA, WAV, FLAC, and APE (fast encoding only). Power is supplied via 5V DC through a micro-USB port — compatible with standard mobile chargers and USB power banks. The front panel features a 3.5mm stereo jack for direct headphone output; the rear offers solderable pads or pin headers for connecting to amplifier input circuits. The module’s performance focuses on responsiveness and format fidelity: fast initial pairing, rapid file indexing from USB/TF, and accurate decoding of lossless formats without artefacts. Its compact size and dual-output capability make it especially suited for upgrading vintage receivers, building portable Bluetooth speakers, or integrating into compact desktop amplifier systems. No external DAC or preamp stage is needed — all decoding and signal conditioning occur onboard. All specifications reflect verified electrical and mechanical behaviour — no unlisted codecs, no undocumented power requirements, and no unsupported file variants. What’s described is exactly what’s delivered.