USB TF Bluetooth Audio Decoding Board

Size: approx. 5.1 × 4.1 × 0.5 cm (2.01 × 1.61 × 0.20 inches); housing is made from flame-retardant plastic (UL94 HB rated), contributing to safety and durability in enclosed builds. Input modes: Bluetooth audio streaming, USB flash drive playback, and TF (microSD) card playback. Audio formats supported: MP3, WMA, WAV, FLAC, and APE (fast encoding only). Power requirement: 5V DC via micro-USB port — compatible with CE-marked mobile chargers and USB-C-to-A adapters. Front 3.5mm jack delivers line-level stereo output suitable for headphones or active speakers; rear output pins provide isolated, low-impedance signal for amplifier input stages. The board implements a dedicated audio decoding IC with hardware-accelerated processing — resulting in lower CPU load and more consistent timing than software-based solutions. This contributes to stable playback, reduced jitter, and accurate sample rate handling across formats. All functionality has been validated using UK-standard mains-powered test equipment and consumer-grade source devices (iPhone 12+, Samsung Galaxy S22, MacBook Air M2). It serves as a practical upgrade path for users seeking better-than-basic audio quality without investing in full commercial receivers — especially useful for students, renters, or hobbyists who value modularity, repairability and long-term compatibility over disposable all-in-one units.