TPA3116D2 2.1 Channel Digital Subwoofer Amplifier Board – XH-M139 50W × 2 + 100W | DC 12V–24V | Hi-Fi Audio Amplifier Module

The XH-M139 Digital Amplifier Board is a high-performance 2.1 channel audio amplifier module powered by dual TPA3116D2 chips. Designed for pure Hi-Fi sound, it delivers powerful and clean audio output for left, right, and subwoofer channels, making it ideal for home audio systems, DIY speakers, and subwoofer projects.

✨ Audiophile-Grade Hi-Fi Sound
⚡ High Power Output: 50W × 2 + 100W Subwoofer
🔋 Energy-Saving Digital Amplifier
🔥 Low Heat – High Efficiency Design
🔌 Wide Voltage Support: DC 12V – 24V
🎚 Smooth Volume Control
🔊 Supports 4Ω – 8Ω Speakers
🛠 Plug & Play – Easy Installation

🎛 Technical Highlights

📌 Model: XH-M139
📌 Amplifier Chip: TPA3116D2 × 2
📌 Channels: 2.1 (Left + Right + Bass)
📌 Signal-to-Noise Ratio: 100dB
📌 Frequency Response: 14Hz – 100kHz
📌 Switching Frequency: 1.2MHz
📌 Board Size: 100 × 80 × 28 mm
📌 Weight: 118g

⚡ Power Output Reference

🔹 12V:
  4Ω → 20W + 20W | 8Ω → 12W + 12W
🔹 15V:
  4Ω → 30W + 30W | 8Ω → 18W + 18W
🔹 19V:
  4Ω → 45W + 45W | 8Ω → 32W + 32W
🔹 24V:
  4Ω → 55W + 55W | 8Ω → 38W + 38W