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XH-M543 High-Power Digital Amplifier Board – TPA3116D2(Original) Class D Audio Module, Dual Channel 2x120W (Stereo Output)

SKU: FA2019-8-1
Amplifier Chip

Original TPA3116D2 (Class D)
Channels

2.0 (Stereo)
Output Power

2×120W (max)
Supply Voltage

DC 12V – 26V (24V recommended)
Signal-to-Noise Ratio

100dB
Speaker Impedance

4–8Ω recommended
Power Efficiency

>90%
Board Dimensions

92 × 68 × 17 mm

The XH-M543 High-Power Digital Amplifier Board is a compact, efficient Class-D stereo audio amplifier designed for DIY audio projects, car audio upgrades, home theater systems, and custom speaker builds. Built around the original Texas Instruments TPA3116D2 chip, this board delivers up to 2×120W of stereo output power while maintaining exceptional efficiency and audio clarity.

At the heart of the board is the TPA3116D2, a highly efficient Class-D audio amplifier that operates with over 90% power efficiency and low idle loss, significantly reducing heat generation and eliminating the need for large external heat sinks in most applications . The chip supports a wide supply voltage range of 4.5V to 26V, making it compatible with a broad range of power sources including 12V car batteries, 19V laptop adapters, and 24V power supplies .

This XH-M543 board is specifically designed for stereo 2.0 channel output, delivering up to 120W per channel when powered at 24V with 4Ω speakers . The board features onboard volume potentiometers for independent left and right channel adjustment, allowing precise control without external preamplifiers . The 100dB signal-to-noise ratio ensures clean, detailed audio reproduction with minimal background noise .

The board incorporates comprehensive self-protection circuits including overvoltage, undervoltage, overtemperature, DC detection, and short-circuit protection, with fault reporting to prevent damage during overload conditions . The PCB layout uses large capacitance aluminum electrolytic and polyester film capacitors for stable power delivery and audio performance .

Whether you are building a portable Bluetooth speaker, upgrading a car audio system, or creating a custom home theater setup, the XH-M543 provides a proven, reliable amplification solution. It is suitable for individual makers, students, and businesses purchasing in bulk for product development or educational programs.

Features

  • Original TPA3116D2 chip — Genuine Texas Instruments Class-D amplifier for reliable performance

  • 2×120W stereo output — High-power dual-channel amplification for demanding audio applications

  • >90% power efficiency — Class-D operation reduces heat and eliminates need for large heat sinks

  • Wide voltage range — Operates from DC 12V to 26V (24V recommended)

  • Onboard volume control — Independent left and right channel potentiometers for precise adjustment

  • 100dB signal-to-noise ratio — Clean, detailed audio reproduction

  • Comprehensive protection — Overvoltage, undervoltage, thermal, DC, and short-circuit protection

  • Compact form factor — 92×68×17mm board fits easily into custom enclosures and car installations

Technical Specifications

# Parameter Specification
1 Amplifier Chip Original TPA3116D2 (Class D)
2 Channels 2.0 (Stereo)
3 Output Power 2×120W (max)
4 Supply Voltage DC 12V – 26V (24V recommended)
5 Signal-to-Noise Ratio 100dB
6 Speaker Impedance 4–8Ω recommended
7 Power Efficiency >90%
8 Board Dimensions 92 × 68 × 17 mm

Usage

Getting Started

  1. Connect power supply — Connect a DC power supply (12V–26V, 24V recommended) to the power input terminals. Observe correct polarity — reverse polarity may damage the board .

  2. Connect audio input — Connect your audio source (MP3 player, smartphone, computer, etc.) to the 3P audio input terminal using the included audio cable .

  3. Connect speakers — Connect speakers with 4–8Ω impedance to the OUT output terminals. Pay attention to positive and negative poles .

  4. Adjust volume — Use a screwdriver to adjust the onboard potentiometers for left and right channel volume .

  5. Power on and test — Turn on the power supply and play audio from your source. The board should begin amplification immediately.

Important Notes

  • Power supply current — Ensure your power supply can provide at least 3A for optimal performance .

  • Speaker protection — When using Class-D amplifiers, use speakers rated for the output power (120W+ recommended) to prevent damage .

  • Heat dissipation — While highly efficient, ensure adequate ventilation for sustained high-power operation .

Typical Applications

  • Car audio upgrades — Add high-power amplification to existing car stereo systems

  • DIY Bluetooth speakers — Build custom portable speakers with powerful stereo output

  • Home theater systems — Drive bookshelf or small floor-standing speakers

  • Computer audio — Upgrade desktop audio with dedicated amplification

  • Educational projects — Teaching Class-D amplifier principles and audio electronics

Notes for Business Buyers

  • Proven platform — TPA3116D2 is a widely adopted Class-D amplifier with extensive documentation and community support .

  • Cost-effective — High efficiency reduces component count and heat sink requirements.

  • Suitable for bulk purchasing — Ideal for product development, educational kits, and volume production.

Q: What is the XH-M543 amplifier board used for?

It is a Class-D stereo audio amplifier board for car audio systems, DIY Bluetooth speakers, home theater systems, and custom audio projects requiring high-power amplification .

Q: What is the power output of this board?

The board delivers up to 2×120W stereo output when powered at 24V with 4Ω speakers .

Q: What power supply does this board require?

It operates from DC 12V to 26V, with 24V recommended for maximum output power . Ensure your power supply provides at least 3A .

Q: What speakers can I use with this board?

Use speakers with 4–8Ω impedance and a power rating of at least 120W for optimal performance .

Q: Does this board use the original TPA3116D2 chip?

Yes. This board uses the original Texas Instruments TPA3116D2 chip for reliable, high-quality amplification .

Q: Does this amplifier need a heat sink?

The TPA3116D2 operates at >90% efficiency, which significantly reduces heat generation. A small heat sink may be beneficial for sustained high-power operation, but is not required for most applications .

Q: How do I adjust the volume?

Use a screwdriver to adjust the onboard potentiometers corresponding to the left and right channels .

Q: What protections does the board include?

It includes overvoltage, undervoltage, overtemperature, DC detection, and short-circuit protection with fault reporting .

Q: Can I use this board with a 12V car battery?

Yes. The board operates from 12V to 26V, making it compatible with car batteries. For maximum power, a 24V supply is recommended .

Q: Can I purchase in bulk for a product development project?

Yes. This amplifier board is suitable for both individual users and business purchasing, including product development, educational programs, and volume production.

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