PRO Bluetooth 5.0 Audio Receiver Decoder Board Module Stereo Output USB/Li‑ion Power A2DP Support Car Audio Speaker DIY

PRO Bluetooth 5.0 Audio Receiver Decoder Board Module Product Overview

The PRO Bluetooth 5.0 audio receiver decoder board module is a high‑performance, low‑cost wireless audio receiver solution based on a Bluetooth 5.0 chip, supporting mainstream Bluetooth audio profiles such as A2DP, AVRCP, and HFP. The module decodes audio signals sent from Bluetooth devices (phones, tablets, computers) and outputs stereo analog audio via a 3.5mm jack, which can be connected to headphones, amplifiers, or active speakers. It operates from 3.7V to 5V, powered via Micro USB or directly from a 3.7‑5V lithium battery (with charging management). Onboard buttons (Previous/Volume‑, Next/Volume+, Play/Pause/Answer/Hang‑up), LED indicators, and a microphone are included, making it ideal for DIY Bluetooth speakers, car audio retrofits, and wireless upgrades for traditional amplifiers.

PRO Bluetooth 5.0 Audio Receiver Decoder Board Module Core Features

The PRO Bluetooth 5.0 receiver uses Bluetooth 5.0 technology and supports A2DP, AVRCP, and HFP profiles, ensuring seamless connection with mainstream Bluetooth devices. Audio performance features a signal‑to‑noise ratio (SNR) of 90dB, dynamic range (DNR) of 91dB, THD+N as low as -70dB, and crosstalk of -86dB, delivering clear, low‑distortion stereo sound. The line‑of‑sight transmission range exceeds 15 meters, suitable for home and car scenarios.

The module includes a 3.5mm stereo audio output jack for direct connection to headphones, active speakers, or amplifiers. An onboard microphone supports hands‑free calling for car or conference applications. On‑board buttons provide control over Bluetooth on/off, play/pause, previous/next track, volume adjustment, and call answer/hang‑up. A MUTE output pin is provided for external circuit control. For power, the module can be powered via Micro USB (5V) or through BAT+ pads with a 3.7‑5V lithium battery (observe polarity). An onboard charging management circuit is included, with a red LED indicating charging status. A blue LED lights up when Bluetooth is connected.

PRO Bluetooth 5.0 Audio Receiver Decoder Board Module Applications

DIY Bluetooth Speakers：Combine the module with a speaker and power amplifier (or powered speaker) to quickly build a portable Bluetooth speaker.

Car Audio Retrofit：Connect the module to the car‘s AUX input or amplifier to add Bluetooth audio reception to an old car stereo.

Traditional Hi‑Fi/Active Speaker Wireless Upgrade：Add Bluetooth receiving capability to home amplifiers or active speakers, eliminating cable constraints.

Headphone Amplifier with Bluetooth：Use the module as a Bluetooth front‑end for a headphone amplifier or high‑fidelity headphones.

Background Music Systems：Stream background music via Bluetooth in shops, restaurants, or offices.

Hands‑Free Calling Devices：Utilise the onboard microphone to create a car or conference hands‑free system.

PRO Bluetooth 5.0 Audio Receiver Decoder Board Module Key Advantages

The PRO Bluetooth 5.0 decoder board provides a stable Bluetooth audio receiver solution at very low cost. Compared to similar modules, it balances audio quality and functionality: 90dB SNR and -70dB THD+N ensure good audio fidelity, appealing to DIYers who care about sound quality. Bluetooth 5.0 support delivers faster, more stable connections and longer range. The onboard buttons and microphone allow standalone operation without an external MCU, simplifying system design. Flexible power options (USB 5V or 3.7V Li‑ion with charging management) make it easy to build portable devices. Mature Bluetooth stack ensures compatibility with virtually all smartphones, tablets, and computers. It is plug‑and‑play: power on, pair, and start streaming. Its compact size (typically ~40×30mm) fits easily into enclosures.

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FAQ:

1. What is the PRO Bluetooth 5.0 audio receiver decoder board and what does it do?
   It is a compact, ready‑to‑use Bluetooth audio module that receives wireless stereo audio from a phone, tablet, or computer and outputs it as a line‑level analog signal. It supports the A2DP profile for high‑quality music streaming and is designed for DIY projects such as adding Bluetooth to older speakers, car stereos, or building a portable wireless speaker. The board typically includes a built‑in DAC, LED status indicator, control buttons, and can be powered from a USB port or a Li‑ion battery.

2. How do I pair the module with my phone? What is the default Bluetooth name?
   Power the board (via USB or battery). It will enter pairing mode automatically the first time it is turned on; the LED usually flashes blue rapidly. On your phone, scan for Bluetooth devices and look for a name such as “PRO Audio”, “BT‑5.0”, or “JL‑AC69”. Select it—no passcode is needed. Once paired, the LED will stop flashing. For subsequent connections, the module will automatically reconnect to the last paired device when powered on.

3. Does the module support both USB and Li‑ion battery power? How do I connect them?
   Yes. The board has a Micro‑USB or USB‑C port for 5 V power, and additional solder pads for a 3.7 V Li‑ion battery. An on‑board charging IC (commonly TP4056) allows the battery to be charged via the USB port while the module operates. When both USB and battery are connected, the board runs from the battery and charges it simultaneously. A fully charged 18650 cell can power the module for several hours of continuous music playback.

4. What audio output does the board provide? Can I connect it directly to speakers?
   The module outputs a stereo line‑level signal (typically via a 3.5 mm jack or solder pads labeled L, R, GND). This is a low‑power signal, not amplified. You must connect it to an external amplifier, active speakers, or the AUX input of a car stereo. Connecting passive speakers directly will not produce any usable sound and may damage the board. For a complete wireless speaker, you can combine this module with a small amplifier board.

5. What Bluetooth profiles are supported? Can I control playback from the module?
   The module supports A2DP (Advanced Audio Distribution Profile) for stereo music streaming and AVRCP (Audio/Video Remote Control Profile). This allows you to use the onboard buttons (Volume +/–, Play/Pause, Previous/Next) to control the media playing on your phone. The controls work with most music apps. Some boards also support HFP for hands‑free calling, but that is less common on basic receiver modules.

6. What is the typical wireless range of this Bluetooth 5.0 receiver?
   In an open space without obstacles, the range can reach up to 30 meters (98 feet). Inside a home or car, with walls and metal objects, expect a reliable connection up to 10 meters. Bluetooth 5.0 improves signal stability and coexistence with Wi‑Fi compared to older versions, but actual range depends heavily on the environment and the transmitting device.

7. Does Bluetooth 5.0 mean better audio quality than Bluetooth 4.2 on this module?
   Bluetooth 5.0 itself does not mandate a higher‑quality audio codec; it primarily improves range, speed, and connection robustness. Most of these modules still use the standard SBC codec. However, the newer chip often has a better DAC and less background hiss. For noticeably higher audio quality, a module that supports AAC, aptX, or LDAC is needed, but those are not commonly found on low‑cost receiver boards.

8. Can I use this module in my car to add Bluetooth audio? How do I wire it?
   Yes, it is a popular car‑audio upgrade. Power the board from a 12 V‑to‑5 V USB car charger or a dedicated buck converter. Connect the stereo output (L, R, GND) to the AUX input of your car stereo using a 3.5 mm cable. If your car radio does not have an AUX port, you can use an FM transmitter or a direct amplifier connection. The module automatically reconnects to your phone when the car is started, providing a seamless wireless music experience.

9. What do the buttons and the LED indicator do? How can I reset the module?
   Typical onboard buttons include Volume +, Volume –, Previous/Next (long press for track change, short press for volume), and a Play/Pause button. The LED behaves as follows: fast blue flash = pairing mode; solid blue = connected; slow red flash = charging (on some boards). To reset the module, you can power‑cycle it, or press and hold a designated reset button if available. Some modules also clear the pairing list by holding a button combination while powering on.

10. What are the most common DIY applications for this Bluetooth receiver board?
    It is used to turn old wired speakers into wireless ones, add Bluetooth to car stereos without AUX, build portable boomboxes, create wireless headphones, or integrate into home audio systems. Its small size, USB/battery power flexibility, and simple controls make it a favorite for hobbyists upgrading audio equipment on a budget.