TPA3116D2 2.1 Channel Amplifier Board 2×80W+100W Subwoofer

TPA3116D2 Audiophile-Grade 2.1 Channel Digital Power Amplifier Board

Take your home audio setup to the next level with this TPA3116D2 Digital Power Amplifier Board. Delivering a robust 2×80W stereo output plus 100W subwoofer channel, this 2.1 channel amplifier board is engineered for audiophiles and DIY audio enthusiasts who demand clarity, depth, and powerful bass reproduction. Running on a DC 24V supply, it combines high efficiency with impressive output — perfect for building custom speaker systems, desktop audio rigs, or subwoofer enclosures.

Key Features

• TPA3116D2 Chip: Texas Instruments' premium Class D amplifier IC, renowned for low distortion and high efficiency
• 2.1 Channel Output: 2×80W for left/right stereo channels + 100W dedicated subwoofer channel
• High Power Handling: Ideal for driving bookshelf speakers and a powered subwoofer simultaneously
• DC 24V Operation: Efficient power delivery with minimal heat generation compared to Class AB designs
• Audiophile-Grade Components: Premium capacitors and PCB layout for clean, accurate sound reproduction
• Compact Board Design: Space-saving form factor makes integration into custom enclosures straightforward
• Wide Compatibility: Works with most passive speakers and subwoofer drivers; easy to wire up for DIY builds

Specifications

• Amplifier Chip: TPA3116D2
• Class: Class D Digital Amplifier
• Channel Configuration: 2.1 (Stereo + Subwoofer)
• Stereo Output Power: 2 × 80W
• Subwoofer Output Power: 100W
• Operating Voltage: DC 24V
• Country of Origin: Made in Mainland China

Who Is This For?

Whether you're a seasoned DIY audio builder, a hobbyist looking to upgrade a home theater subwoofer setup, or an electronics enthusiast crafting a custom speaker system, this amplifier board delivers professional-grade performance at an accessible price point. Its efficient Class D topology keeps operating temperatures low while outputting serious power.

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Learn more: Amplifier

Frequently Asked Questions

Q: What power supply do I need for the TPA3116D2 amplifier board?

A: This amplifier board is designed to operate on a DC 24V power supply. For best performance and to achieve full rated output power (2×80W stereo + 100W subwoofer), use a high-quality regulated DC 24V power supply with sufficient current capacity (typically 10A or more recommended for full load).

Q: What speakers can I connect to this 2.1 channel amplifier board?

A: The board supports two passive stereo speakers (each rated for at least 80W) and one subwoofer driver (rated for at least 100W). It is compatible with most 4Ω–8Ω passive speakers and subwoofer drivers, making it highly versatile for DIY home audio or desktop speaker builds.

Q: Is this amplifier board suitable for audiophile-quality audio?

A: Yes. The TPA3116D2 chip from Texas Instruments is a Class D amplifier known for its low Total Harmonic Distortion (THD) and high signal-to-noise ratio. Combined with audiophile-grade supporting components on this board, it delivers clean, accurate sound that satisfies discerning listeners in home and desktop audio applications.