30W+30W Stereo Amp Board Bluetooth 5.0

Board dimensions: 80.5 mm × 67 mm × 35 mm. Typical weight: ~120 g. Input: DC 8–24 V via 5.5 × 2.1 mm barrel jack. Output: True stereo 2.0, 30 W per channel into 4–8 Ω loads. Supported inputs: Bluetooth 5.0 (SBC codec), 3.5 mm AUX line-in, USB flash drive (FAT32), and microSD (TF) card (FAT32, up to 32 GB). Signal conditioning includes low-ESR bulk capacitors and high-saturation filtering inductors to maintain dynamic headroom. Substrate: Flame-retardant polycarbonate (PC) — selected for thermal stability and mechanical strength. All audio paths are internally routed with ground plane isolation to prevent crosstalk between digital and analog sections. There are no DIP switches or firmware updates — operation is plug-and-play. Playback from USB/TF resumes from last position on power cycle; Bluetooth memory retains paired devices across resets. Common applications include custom Bluetooth speaker enclosures, studio monitor upgrades, assistive listening devices, and audio interfaces for Raspberry Pi or Arduino-based projects. Requires passive speakers only — does not support bi-amping, bridged-TTL, or digital outputs.