The 4.1 Bluetooth Stereo Audio Receiver Circuit Board is designed to convert any speaker system into a wireless Bluetooth-enabled device. This module supports Bluetooth 4.1, offering reliable wireless connection and high-fidelity stereo sound. Its compact PCB design allows it to be easily integrated into DIY speakers, car audio systems, or desktop audio kits.
With low power consumption and stable audio transmission, it is ideal for hobbyists, students, and electronics enthusiasts who want to build or upgrade their own wireless audio projects. The board is compatible with most Bluetooth-enabled devices, including smartphones, tablets, and laptops, making it a versatile choice for custom audio setups.
Common Use Cases:
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Upgrading old wired speakers to wireless Bluetooth speakers
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DIY desktop or portable audio systems
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Robotics projects requiring sound output
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Small home audio setups or hobby electronics projects
🔹 FAQs
Q1: What Bluetooth version does this module support?
Supports Bluetooth 4.1, providing reliable and low-latency stereo audio.
Q2: What devices can I connect?
Compatible with smartphones, tablets, laptops, and other Bluetooth-enabled devices.
Q3: What is the typical wireless range?
Up to 10 meters in open space for stable connection and uninterrupted audio.
Q4: What output power does the module support?
Suitable for 3W–10W audio output speakers, depending on your amplifier circuit.
Q5: Can this board be integrated into custom speaker projects?
Yes, its compact size and low power design make it ideal for DIY audio builds.
🔹 Specification Table
| Parameter | Value |
|---|---|
| Bluetooth Version | 4.1 |
| Audio Output | Stereo |
| Supported Profiles | A2DP |
| Operating Voltage | 5V DC |
| Power Consumption | Low |
| Wireless Range | Up to 10 meters (line of sight) |
| Size | Approx. 50 × 30 × 8 mm (varies by model) |
| Applications | DIY speakers, car audio, robotics, desktop audio kits |






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