SPECIFICATIONS

What This Module Is — Overview

• It’s a multi-function audio decoder + amplifier + input hub: it combines a Bluetooth 5.0 receiver, MP3/WAV (and sometimes lossless) decoder, TF-card / USB / AUX / FM radio input support, on-board amplifier (in many variants), and output to speakers or line out. 

• It’s designed for “DIY” audio setups: car stereo upgrades, custom speaker boxes / boomboxes, home audio projects, portable audio builds, etc.

• It usually accepts a wide input voltage range (e.g. 5 V to 12 V) — making it suitable for car systems or portable battery-powered speakers. 

📡 Typical Features & Capabilities

• Bluetooth 5.0 (for wireless audio streaming from phone/computer) — stable and modern, works with A2DP/AVRCP profiles. 

• MP3 / WMA / WAV / (sometimes lossless formats like FLAC / APE / WMA) playback from TF-card (microSD) or USB flash drive. 

• FM radio receiver (e.g. 87.5-107.5 MHz band) — with auto-scan and station-store features in many boards. 

• AUX / Line-in input — to accept analog audio from another device (phone, MP3 player, pre-amp, etc.). 

• On-board amplifier + speaker outputs — many boards supply enough power to drive small to mid-size speakers directly (often 2× a few watts up to ~20–40 W depending on model) without needing an external amplifier. 

• IR remote control support — lets you change tracks, volume, input mode, etc. remotely. 

• Multi-mode input switching — easily switch between Bluetooth, USB, TF card, FM radio, AUX/LINE-IN. 

🔌 Typical Specifications (What to Expect)

🛠️ Common Use Cases & Why People Use These Modules

These decoder-amplifier boards are popular because they:

• Let you build a car stereo upgrade: convert old speakers or add Bluetooth + USB + radio to a DIY car setup.

• Power custom speaker / boombox / portable sound boxes — compact, integrated solution without needing multiple separate modules.

• Serve as home audio modules — DIY bookshelf speaker, kitchen radio, workshop stereo, etc.

• Work for embedded or DIY electronics projects — e.g. adding audio to robots, kiosks, small furniture-integrated speakers, etc.

• Provide multiple input convenience — Bluetooth streaming, USB playback, FM radio, AUX line-in in one board.

Who This Module Is Good For — And Who Should Consider Other Options

Good for:

• DIY hobbyists, tinkers, and makers building custom speakers, car audio, or portable boomboxes.

• Users who want a simple “all-in-one” audio module: Bluetooth + USB + radio + amplifier in a compact board.

• Projects where cost, size, and convenience matter more than audiophile-grade performance.

• Cars, small rooms, workshops, garages, or outdoor portable speaker use.