USB TF Bluetooth Audio Decoder Module

Measuring approximately 5.1 x 4.1 x 0.5 cm (2.01 x 1.61 x 0.20 inches) and constructed from lightweight plastic, this decoder module prioritises portability and ease of integration. It accepts audio via three independent pathways: Bluetooth wireless reception, USB mass storage playback, and TF (microSD) card decoding. Supported formats are MP3, WMA, WAV, FLAC, and APE (fast encoding variant only). Power input is 5V DC — fully compatible with standard mobile phone chargers using a micro-USB connector. The front 3.5mm jack outputs line-level signal suitable for direct headphone use, while the rear pin header delivers buffered signal for connection to amplifier input stages. Engineered for reliability, it maintains stable Bluetooth links even in environments with multiple 2.4 GHz devices, thanks to robust RF design and adaptive frequency hopping. Connection speed is optimised for minimal latency — enabling immediate playback after pairing, with no perceptible delay between device selection and audio onset. Its broad device compatibility covers Android, iOS, Windows, and macOS Bluetooth sources without requiring proprietary apps. Designed for makers and upgrade-focused users, this module bridges legacy analogue amplifiers with modern digital sources — turning basic power amps into versatile, multi-source audio hubs without replacing core hardware.