The XH-M543 is a high-power, dual-channel digital stereo amplifier board designed around high-efficiency Class D architecture. It is capable of delivering up to 120W per channel, providing high-fidelity audio with low heat generation. This module is widely used for DIY speaker builds, home theatre systems, and car audio upgrades.

Specifications

• Amplifier Chip: TPA3116D2 (or equivalent CS3835E0)
• Operating Voltage: DC 12V to 26V (24V recommended for maximum performance)
• Output Power: 120W x 2 Max
• Channel Count: Dual Channel (Stereo)
• Signal-to-Noise Ratio: 100dB
• Power Efficiency: >90%

Features

• Equivalent IC Support: Some versions of this module may feature the CS3835E0 chip, which is a functional equivalent to the TPA3116D2, offering comparable performance and reliability.
• Pre-amplifier Circuit: Includes an onboard operational amplifier to boost the input signal, ensuring sufficient drive for the power stage even with low-level audio sources.
• Thermal Management: Equipped with a large, finned aluminium heatsink to ensure stable operation during continuous high-power output.
• Integrated Protection: Features comprehensive protection against overvoltage, undervoltage, overheating, DC detection, and short circuits.
• Adjustable Gain: Onboard potentiometers allow for precise volume control for each channel.
• High-Quality Components: Utilizes dedicated audio-grade capacitors and shielded inductors to filter out electromagnetic interference and preserve signal clarity.

Power Supply Recommendation

For optimal performance, use a regulated DC power supply. The output power is directly proportional to the input voltage:

• 12V Supply: Suitable for 4-ohm speakers, providing lower output power (~50W).
• 24V Supply: Recommended to reach the rated 120W per channel into 4-ohm loads. Ensure the power supply can provide at least 5A to 10A of current to handle peak audio signals.

Common Applications

• High-power DIY stereo speakers and bookshelf monitors
• Powering automotive audio subwoofers and mid-range drivers
• Home audio system amplification and theatre setups
• Active speaker conversions and outdoor public address systems