The VHM-314 Bluetooth 5.0 MP3 Decoder Board is a compact, versatile wireless audio receiver module designed for car audio systems, DIY speaker projects, and home stereo upgrades. As the upgraded replacement for the popular XY-BT-Mini, this board combines Bluetooth 5.0 connectivity, lossless audio decoding, and a built-in stereo amplifier circuit, delivering a complete wireless audio solution in a board measuring just 45 × 30 mm .
At its core, the VHM-314 features a Bluetooth 5.0 chipset that supports A2DP, AVRCP, and HFP protocols, enabling stable wireless audio streaming from smartphones, tablets, and computers up to 10 meters away . The board supports lossless audio decoding for high-quality playback, with a signal-to-noise ratio of 90dB and total harmonic distortion below 0.1%, ensuring clean, detailed sound reproduction .
The board includes a built-in 5W+5W stereo amplifier capable of directly driving small speakers without the need for an external amplifier . It also provides line-level output for connecting to external amplifiers or powered speakers, offering flexibility for different system configurations . The Type-C interface provides power input and is increasingly standard across modern devices, offering reversible plug orientation .
The VHM-314 is designed as a direct upgrade for the XY-BT-Mini, maintaining the same compact form factor while adding improvements in Bluetooth version, audio quality, and connectivity . The board is powered by a DC 5V supply via the Type-C port, making it compatible with USB power adapters, power banks, and car USB ports .
Whether you are upgrading a car stereo system, building a portable Bluetooth speaker, or adding wireless audio to a vintage hi-fi setup, the VHM-314 provides a practical, cost-effective solution. It is suitable for individual makers, students, and businesses purchasing in bulk for product development or educational programs.
Features
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Bluetooth 5.0 connectivity — Stable wireless audio streaming up to 10 meters with A2DP, AVRCP, and HFP support
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Lossless audio decoding — High-quality playback with 90dB SNR and <0.1% THD
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Built-in 5W+5W stereo amplifier — Directly drives small speakers without external amplification
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Line-level output — Connects to external amplifiers or powered speakers for flexible system integration
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Type-C power input — Modern, reversible connector compatible with USB adapters and power banks
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XY-BT-Mini upgrade — Direct replacement with improved Bluetooth version and audio performance
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Compact form factor — 45 × 30 mm board fits easily into small enclosures and car installations
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Simple controls — Supports play/pause, track switching, and volume adjustment via Bluetooth or onboard buttons
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Bluetooth Version | Bluetooth 5.0 |
| 2 | Supported Protocols | A2DP, AVRCP, HFP |
| 3 | Amplifier Output | 5W + 5W (stereo) |
| 4 | Power Supply | DC 5V via Type-C |
| 5 | Signal-to-Noise Ratio | 90dB |
| 6 | Total Harmonic Distortion | < 0.1% |
| 7 | Wireless Range | Up to 10 meters |
| 8 | Board Dimensions | 45 × 30 mm |
