Bluetooth 5.0 Audio Receiver Module with USB/TF Card Decoder, Type-C 5V Power Input, Stereo Preamp L/R Output, DIY Wireless Audio Board for Speakers, Amplifiers & Car Audio

Overview

This Bluetooth 5.0 Audio Receiver Module is a compact decoding and playback board intended for DIY wireless audio projects where you want clean, line/preamp-level stereo output to feed an external amplifier stage. It combines Bluetooth audio reception with local media decoding from USB and TF (microSD) storage, making it a flexible front-end for powered speakers, amplifier boards, car audio retrofits, and custom media players. Power is supplied via a modern Type-C 5V input, allowing you to run the module from common USB power sources or a regulated 5V rail inside your project.

Unlike high-power amplifier modules, this board is designed as a source/decoder stage. The stereo output is typically line-level or preamp-level (exact output level varies by module revision and load), which is ideal for connecting to an amplifier input (Class D amp board, home amplifier AUX input, car amplifier, etc.). This architecture helps keep noise low and makes it easier to reuse existing speaker/amplifier hardware while adding Bluetooth 5.0 and removable-media playback.

Technical Details

Bluetooth audio reception is handled by an onboard Bluetooth 5.0-capable SoC/decoder solution (chipset varies by module revision). In typical use, the module advertises a Bluetooth audio sink profile for streaming music from phones, tablets, laptops, and other compatible transmitters. Real-world wireless range and stability depend heavily on antenna design, enclosure materials, nearby interference (2.4 GHz Wi‑Fi, vehicle electronics), and supply noise. For best results, provide clean 5V power and avoid placing the module directly against large metal surfaces that can detune the antenna.

For local playback, the module includes a USB host interface for a USB flash drive and a TF/microSD card slot. The supported audio formats, maximum storage size, and file system compatibility depend on the decoder chipset and firmware used on your specific board revision—check the datasheet or seller documentation if you need guaranteed support for a particular codec (for example MP3/WAV/FLAC) or large-capacity media.

The audio output is provided as stereo L/R analog signals referenced to board ground. This output is intended to feed a high-impedance amplifier input. If you connect it directly to speakers, volume will be very low and distortion may occur because the module is not designed to deliver speaker-level power. When integrating with an external amplifier, keep audio wiring short, use twisted pair/shielded cable where possible, and route audio away from switching regulators or high-current wiring to reduce hiss and whine.

Specifications

• Product type: Bluetooth audio receiver + USB/TF decoding module
• Bluetooth version: 5.0 (as stated)
• Power input: 5V via USB Type-C (as stated)
• Audio output: Stereo L/R analog preamp/line-level output (exact level varies by module revision; confirm in datasheet)
• Playback sources: Bluetooth streaming, USB flash drive, TF/microSD card (as stated)
• Supported file formats: Varies by decoder chipset/firmware; check datasheet
• Supported storage capacity/file system: Varies by module revision; check datasheet
• Operating range: Varies by environment, antenna, and interference; check datasheet
• Intended load: High-impedance amplifier input (recommended); not a speaker driver
• Board layout/controls/indicators: Varies by module revision; verify pin labels and connectors on your unit

Applications

• DIY Bluetooth upgrade for existing amplifiers, powered speakers, and soundbars (use AUX/line input)
• Car audio Bluetooth receiver front-end with USB/TF playback for offline music libraries
• Custom media player projects with external Class D amplifier modules
• Workshop/garage speaker builds where you want multiple playback options (phone + USB/TF)
• Prototyping audio source stages for embedded systems and hobby electronics

Integration Notes

• Power: Use a stable 5V supply. If powering from a noisy DC-DC converter, add filtering (for example, additional bulk capacitance on 5V and good grounding practices) to reduce audible noise.
• Grounding: Use a single-point (star) ground between the module and amplifier when possible. Avoid ground loops that can introduce hum.
• Audio wiring: Keep L/R and GND runs short; use shielded cable for longer runs, especially in vehicles.
• Amplifier matching: Connect to an amplifier’s line input. If your amplifier expects differential input, use the appropriate interface or confirm compatibility.
• Mechanical placement: Keep the antenna area unobstructed; avoid enclosing the antenna against metal to maintain Bluetooth performance.
• Revision differences: Pin labels, button functions, and supported formats can differ between batches. Always confirm the silkscreen and test basic functions before final installation.

Included Components

1x Bluetooth 5.0 audio receiver decoder module