The XH-M548 BT Dual Channel 120W TPA3116D2 Core Digital Audio Power Amplifier Board is a practical and versatile component designed for high-fidelity audio amplification. Here are the detailed specifications and features of this amplifier board:

Specifications:

• Model: XH-M548
• Chipset: TPA3116D2
• Bluetooth: BT 4.2
• Power Output: 2 x 50W (RMS) / 2 x 120W (peak)
• Input Voltage: DC 12-24V
• Frequency Response: 20Hz-20kHz
• Impedance: 4-8 ohms
• SNR (Signal to Noise Ratio): >90dB
• THD (Total Harmonic Distortion): <0.1%
• Audio Input: Bluetooth or AUX (3.5mm jack)
• Audio Output: Speaker output terminals
• PCB Size: Approximately 98mm x 70mm x 17mm

Features:

1. High Power Output: Capable of delivering up to 120W per channel, providing sufficient power for most home audio setups.
2. Bluetooth Connectivity: Integrates Bluetooth 4.2 for wireless audio streaming from smartphones, tablets, and other Bluetooth-enabled devices.
3. Versatile Input Options: Supports both Bluetooth and AUX input, allowing flexibility in audio source connection.
4. Efficient Amplification: Uses the TPA3116D2 chip, known for its high efficiency (up to 90%) and low heat generation, ensuring reliable performance.
5. High Fidelity Audio: Ensures clear and high-quality sound reproduction with minimal distortion and noise.
6. Compact Design: The small size of the PCB makes it easy to integrate into various audio projects and enclosures.
7. Over-Current Protection: Built-in protection circuitry to safeguard against short circuits and over-current conditions.
8. Wide Voltage Range: Operates within a broad range of input voltages (12-24V), accommodating different power supply options.

Applications:

• DIY audio projects
• Home audio systems
• Portable speaker systems
• Car audio amplification
• Audio system upgrades

Additional Notes:

• Ensure proper heat dissipation to maintain optimal performance, especially when driving high-power loads.
• Use a power supply that can provide adequate current to avoid underperformance or damage.
• Proper speaker impedance matching (4-8 ohms) is crucial to avoid overloading the amplifier.